ENSC 2141 Module B Week 2 -SolidWorks and FEA

0:00okay in this session what we're going to

0:01do is talk about how to use SolidWorks

0:03to do your truss for the trust lab where

0:07you're designing three different trusses

0:09and first thing we're going to do is

0:10when we go into SolidWorks we say file

0:12new

0:14we're going to come up with a screen

0:16that looks like this I'm going to get my

0:18screen to look like what some of yours

0:19may look like if this is the first time

0:22your installed Works you've got a part

0:23an assembly and a drawing template that

0:26we can leverage for creating that part

0:28for example and so I could click on this

0:31part template right here now when I'm

0:34talking about templates in SolidWorks we

0:36can have templates that have all the

0:38settings and preferences that we want to

0:40have saved inside of that template so

0:43I'm going to go ahead and leverage one

0:45of mine what you can do is just use the

0:47standard part template and I'm going to

0:49show you what changes you need to do to

0:51make it just like what mine's going to

0:52be here

0:53now what kind of stuff would we want to

0:55store in a template things like the

0:57units the drawing convention that are we

0:59going ANSI ISO those various things what

1:02kind of menus just everything that we'd

1:05ever want to have in there there's lots

1:07of stuff we can store in these templates

1:08and so basically what we need to change

1:11in our template is I can go up here to

1:14this little gear right here that says

1:16options you notice I have a menu That's

1:19opened up here and it's pinned and this

1:21is going to have tools and options as

1:23well so if I just click on either one of

1:25those if I hit this options this is

1:28going to pull up our main options that

1:30we need to change and if you're using

1:32the and you're leveraging the template

1:34that came with SolidWorks pretty much

1:36the only thing that we're really going

1:37to change here in this course because

1:39this isn't a full SolidWorks course at

1:41all we just want to come in here make

1:43sure that we're in ANSI drawing standard

1:45now mine says modified because when you

1:48click on this you're probably going to

1:49be able to use the ANSI and when you

1:52come down on two units down here

1:55and you hit inch pounds and I change

1:57this to usually three decimal places

1:59right here on length that's a real

2:01typical unit of length in the inch

2:03system we're going to have it will put

2:05that as a modified ANSI and that's okay

2:07so we're going to accept those changes

2:09that's the only thing I'm really doing

2:11in there the other thing that I might

2:12want to do is come in here and just

2:14highlight these I'm shifting all these

2:17and just coming in here and hiding these

2:19planes

2:20now I still can see the planes if I

2:23hover over this so I really don't need

2:25those because they'll actually conflict

2:26with some of the drawing lines and kind

2:28of be confusing to have too many lines

2:30in there let's talk about your screen so

2:32you do have three different planes here

2:34you have an origin that can show up in

2:36the center and you have this little

2:37Triad right here basically we're going

2:39to want to draw on this X Y plane right

2:42here which corresponds to this front

2:45plane right here so the other planes

2:47that's a XZ this is a YZ plane so we're

2:51going to leverage the front plane here

2:53for our sketches now we've saved our

2:56units and did all this fun stuff got

2:59everything kind of ready to go and what

3:01we're going to do is go into sketch mode

3:03I have my plane selected there and oh

3:07sorry about that hit sketch and it's

3:09saying what plane if I want to I can

3:12come in here and say that plane right

3:13there and it's going to go normal to

3:15that I can see that I'm going to X Y

3:16plane anytime I move my mouse by holding

3:19the middle button around I can move that

3:22Triad move my part around I can always

3:24hit space bar normal two and it'll take

3:27me normal to that surface or that plane

3:30that we're drawing on what kind of lines

3:32are we going to deal with well I'm going

3:33to

3:34align as a construction line a center

3:37line is actually a center line is

3:39construction line line is going to be

3:40for geometry that we can extrude I'm

3:42going to start with Center Line

3:44and I'm gonna if you notice I hover over

3:46the origin it puts a a relationship to

3:50that Center and I can banjo a line out

3:53and that's the center line that's our

3:54construction line that we're creating so

3:56I can come out here and do that right

3:58there

3:58um you notice when I banjo it over it

4:01did a horizontal line and it that line

4:03has a horizontal relationship if I come

4:05up here into sketch dimension

4:07I can come in here and tell this line to

4:09be 12 inches long

4:11okay now our line is going to be 12

4:15inches long so I'm going to support this

4:16from right here to here kind of like a

4:18supported beam I'm going to put a load

4:20somewhere up here and what I'm going to

4:23do is come in here and draw a line I'm

4:25just going to make it coincidental to

4:27that piece and we're going to put some

4:30dimensions on this as well so I'm going

4:32to come in here from that point to here

4:36and I'm going to say that is three

4:38inches

4:40and the next thing I want to do is come

4:42in and just go ahead and finish all my

4:44other well I need one more Dimension I

4:46need to tell it where this is relative

4:48to this point oh sorry about that I

4:50didn't hit dimension

4:51from there to there and let's do that at

4:54three inches so I have this point this

4:57is where I'm going to put my load so

4:58this is similar to what you guys are

4:59doing I'm going to have a load Point

5:00pushing down here simply supported here

5:03at this node and at this node what I'd

5:05like to do is go ahead and draw some

5:07more lines in here

5:10foreign

5:11and represent that I'm going to put a

5:15couple more lines in here

5:17I'm going to come in here at this

5:18midpoint and come down to here

5:20and then come over here to this midpoint

5:23now I'm going to go ahead and delete

5:24that line right there

5:27and

5:28the reason I did that is I'm going to

5:30come in later and put a member there but

5:32I want a member to be represented on all

5:35these construction lines here

5:37and we're going to hook a bolt at each

5:41of these nodes connecting to the other

5:43member on the other side so this is

5:46looking good so we're going to introduce

5:48the next concept of offset entities and

5:51if I come in here and select this entity

5:53it's going to one side there

5:55so it's coming off to this side if I hit

5:57bi-directional it goes off each side

6:00and I can come in here and just select

6:02all the members I want to have that

6:05offset to and all those are at a hundred

6:07thousand so that looks really really

6:09good

6:10now then at each of these points right

6:12here what we're going to want to do is

6:13draw a circle with a hole in it so that

6:17we can make our Mount to our bolts

6:20connecting each side of the truss and

6:22the way I would do that is just go to

6:23here to I'm still in the sketch mode go

6:25to that Circle and I'm going to come in

6:28here and just go this big and we're

6:31going to put a dimension on that I could

6:33type the dimensions when I do the

6:34geometry but I like putting the

6:36dimensions on here so I can see them and

6:38that is 0.25 that's going to be the hole

6:41that the laser is going to cut

6:43for this so we need another hole and if

6:45you notice however that that's

6:46concentric about that Circle I'm going

6:48to make this one

6:50half an inch in diameter here

6:53there we go

6:54so 0.5

6:57now then

6:59I have

7:00both of my circles drawn this is where

7:03I'm going to drill now we're going to

7:04trim stuff out later what I'm going to

7:06do is talk about how can I copy these

7:08two lines around to each note and what

7:12I'm going to do is come in here and just

7:13window this is probably the easiest

7:15thing I can do and you can go up to edit

7:17copy and paste so you have the same

7:19commands that you have in Excel in word

7:22so I'm going to copy this and I'm just

7:24going to go to each of these places and

7:26I can hit Ctrl V and I can just hold

7:30that Center and drag it and it's now

7:33there

7:34so we're going to repeat that at each

7:37point that I would like to see that

7:39so at this point we've put our holes

7:42where our nodes are going to be and the

7:44next command we're going to want to do

7:45is I'm going to come down let's see what

7:47do we want to do let's do it right here

7:49on this one

7:50I'm going to come in here and I'm going

7:52to trim away the things I don't want to

7:54have so this remember I'm going to have

7:55the material coming this way it's going

7:57to go around the part making the hole

8:00and it's going to come down here to this

8:02member this way and it's going to go up

8:04to this member so we're going to use

8:06trim to trim the things we don't want to

8:08have I like power trim it's the easiest

8:10and the way power trim works is you pick

8:13your first button and hold it down you

8:15draw a line you can barely see the line

8:17there it goes over the things you don't

8:19want now if I made a mistake you see

8:21that red dot you can go back over it and

8:23it will actually come back up so I can

8:25say hey I wanted those gone I want this

8:27gone I need those gone basically you're

8:30going to go through there until you

8:31clean up everything that you don't want

8:34on this drawing so now I'm getting rid

8:37of those and you can tell it's starting

8:40to look kind of like the material like I

8:42wanted now all I need to do is clean

8:44this one off this one off and this off

8:46as well so now I have my material

8:49flowing here around can go this way and

8:51this way yes I see there's a difference

8:53in Grays that's going to self-heal

8:55itself when we go here and trim all

8:57these other ones off so let's go around

8:59and we'll trim all those off and we'll

9:00come back and see what we're at we have

9:03all the holes at each node Point done

9:06and if you notice I have a lighter gray

9:09out here with a darker gray inside so

9:12that's letting us see that we have a

9:15continuous

9:16a surface running on this place and

9:19another surface at this so we could kind

9:21of see I do not want to extrude these

9:22I'm just going to want to come in here

9:24and extrude the lighter gray surface

9:26there and the way to do that is we're

9:28going to go ahead and finish our sketch

9:29at this point

9:31and that is my sketch now I can see

9:34those construction lines and I and I

9:35recommend leaving those and don't

9:36trimming those off at these points in

9:38case you want to come in here modify it

9:39and leverage those as construction lines

9:42be in a construction line it won't

9:43extrude and it won't come across as a

9:45dxf file when we save this as a dxf so

9:49the next thing we want to do is if you

9:50click on sketch here and you hit file

9:53features we can do extrude and this is

9:56going to let us come in here and extrude

9:57this now it's if I just hover over my

9:59part it's letting me pick different

10:01areas what I want to do is probably pick

10:03that section right there and you notice

10:05it kind of went yellow and I can see

10:06that the members wanting to come out

10:08here and if I would just

10:10scroll through this I can make it as

10:12thick as I want now the question is how

10:14thick do we want this well right now

10:15we're using three millimeter material

10:17we're in an inch drawing so I'm going to

10:21put the math so I don't have any kind of

10:23rounding error I'm going to say three

10:24millimeters divided by

10:2725.4 and that's going to get my units

10:30correct basically 118 thousandths with

10:33some change there and I now have the

10:35thickness of my part showing up here

10:39and so that's my frame that I need cut

10:41what do we need to do to finish this

10:44Frame now what we're going to do is come

10:46in here and put material on here and we

10:48want to edit material

10:51and this is going to come up with kind

10:53of a short list of materials and

10:54categories we're going to go to Plastics

10:56and we're going to leverage this acrylic

10:58medium high impact plastic we're going

11:00to apply that close it you notice my

11:03part now kind of looks somewhat

11:04translucent on there I can see through

11:06there somewhat and that's going to

11:08represent the acrylic piece that we're

11:09going to have on our part so if I do

11:11something like Mass properties right

11:13here under evaluate now again if you

11:17don't have the tabs that I have and I

11:19use one and you need it you can always

11:20right click up here and go to tabs and

11:22you can turn those tabs on so if a value

11:24wasn't there you can use that

11:26evaluate is going to let us do things

11:28like measure or if we wanted to see the

11:30Mass properties how much should this

11:32thing weigh it now knows the material

11:34and it can tell us how much pounds we

11:36can convert that to grams really easy

11:39for this experiment and so we now know

11:41how heavy this member is going to be

11:44so at this point I would recommend

11:46saying file save and save your file as

11:50the file name that you're going to want

11:51so maybe if this is trust one put your

11:54group number and Trust one on there for

11:55example the next thing we want to do is

11:58come in here and do a FEA analysis of

12:01this part now this is not an FEA course

12:04that we're going to analyze this Frame

12:06we're going to put the load on it and

12:07the conditions that we're going to put

12:08the machine and what kind of conditions

12:10are we looking at here we're looking at

12:12putting a support here a hinge type pin

12:15and one over here and then we're going

12:17to put the load on this member right

12:19here and we're going to see what does

12:21that look like strength wise is it going

12:23to break here here or where is it going

12:25to tend to break now again we're not a

12:27FEA correspondite element analysis but

12:30we're going to leverage some of the

12:31basic aspects of this and just kind of

12:33help you learn how to design in the

12:35first lab you guys did an excellent job

12:37of analyzing a trusted couple Trust

12:40Systems doing some method of sections

12:42and what we want you to do in this one

12:44is to see the next leg of technology

12:46which is FEA embedded in our CAD system

12:48which is computer-aided design

12:51now again a toolbar that we're going to

12:53use is going to be this simulation again

12:55if it's not there click in this area

12:56turn that toolbar on and what that's

12:59going to let us do is come in here we're

13:00going to start a new study now when I do

13:02a new study it's going to add a new tab

13:04down here I'm going to do a static study

13:07so it's kind of hard to tell but that is

13:09grayed out right over there right next

13:11to study study and we're going to accept

13:13that so this is a static study we can do

13:16a lot of different cool studies within

13:17simulation and the next thing we need to

13:21do we've already applied material

13:22because we've done that right here it

13:23shows our material and that's going to

13:25come across now probably before we get

13:27to doing too much into this we probably

13:30want to make sure that our units within

13:32this are going to be

13:34units that we're happy with in terms of

13:39the simulation now simulation units

13:41typically won't be the same or they

13:44could be different than the template we

13:46use to draw the part so I would

13:48recommend going down here to simulation

13:50options and making sure that our default

13:53options here are in inch pounds and I'm

13:57going to be happy with that so we don't

13:58want to mix our units up you don't want

14:00to go putting loads and all these kind

14:02of things on just like we don't want to

14:03draw our part and then change units

14:05because if you draw something at one

14:07inch and it was actually one millimeter

14:09and you think I'll just change the units

14:10it's still one millimeter it'll just be

14:13on the scale of the inch system so we

14:16got to do those settings initially so we

14:18are in inch system PSI

14:21something that most American students

14:23are going to relate to a little bit more

14:24than the the Newtons and such that we're

14:27going to put on here

14:29uh let's see we've got this we want to

14:31talk about so we did our study did our

14:34material we want to come in here and

14:36we're going to put a fixture on this and

14:38the one you're going to want is a fixed

14:40geometry now this is not the kind of

14:43geometry you're going to want to have

14:44where it's fixed and it's bending off

14:46there we're going to want to have this

14:47hinge type that we can come in here and

14:49hinge this and we're going to have a

14:51bolt that goes across this direction

14:53over here on this one and cross over

14:55here on this and that's where we're

14:56going to put our load so we're going to

14:57let it hinge on that face right there

15:01and we're going to come over here and

15:03pick this other face right there so we

15:05can see the faces highlighted if you

15:07pick the wrong one just delete it right

15:08there you can right click and delete it

15:10and we now have both of those as a

15:12hinged fixture and that's looking really

15:16good so we've got those both selected

15:18now at this point we're ready to come in

15:20and put our load on here and we're going

15:22to go to load we're going to put a force

15:24and the force we're going to pick is if

15:27I just move my mouse around it's letting

15:29me see lots of options I want it to be

15:30on that surface right there that face

15:32now that's showing the force being

15:35applied in all directions out from that

15:37face we do not want that what we're

15:39going to do is why I have that selected

15:42now if you notice I've got two faces

15:45over here it kept on my system I just

15:48want the one that's purple right there I

15:50don't want the ones that I don't hear

15:51Purple should only have one face

15:53selected there so make sure you only

15:54have this face that's related to that

15:57and we're going to go in here and we're

15:59going to say we want to select a

16:00Direction

16:01at this point I can open up this little

16:03menu here and I am going to leverage

16:06this right plane so I can make the force

16:08go up or down

16:10parallel to that plane and if I come

16:13over here and hit this you can tell the

16:15arrows are going up here

16:17what I'm going to do is hit reverse

16:18Direction now they're going down so on

16:20that face that bottom half of that face

16:22there we're going to be pushing downward

16:24again we're going to have a pin that

16:26goes from here over to the other one and

16:27we're going to be putting our load down

16:28there and what I want to do is put 50

16:31pounds on here right now just see how

16:33does our frame deal with that so we now

16:36have a 50 pound load and our fixtures

16:38connected on this

16:40the next thing that we do in the FEA is

16:42we're going to do a simple run on this

16:44and when we do this it is going to mesh

16:47the part into little nodes and it's

16:49going to connect that in different

16:51techniques it's going to have the

16:53ability to calculate each force from

16:55each node in essence so let's go ahead

16:57and hit run study

17:00and we're running our study on this

17:02now some computers might be faster than

17:04mine that's great if I look at this I

17:07can kind of see the orange frame in my

17:08initial frame and I can go oh boy that

17:10looks hideous it really has changed a

17:13lot this is an exaggeration of yes this

17:16Frame could Bend and deflect much like

17:19this and we're looking at a stress plot

17:21over here

17:22and before we talk about the stress plot

17:24I want to show you the the mesh of this

17:27part that we did this calculation so

17:29this shows the meshing of all these

17:31nodes these little triangles basically

17:34and it's doing all the calculations

17:36within that now we're going to be happy

17:37with the meshing technique on here

17:38because we kind of have an auto

17:39technique put on there and it's going to

17:41do a fair job if we were in a heavy f8

17:43course FEA course we would talk about

17:45the mesh and techniques the size of the

17:47nodes how do we know when they're big

17:49enough or small enough and how we can

17:51change our processing times

17:54so we're looking at our stress plot now

17:55and this looks really kind of

17:58questionable like did this thing break

18:00or not we really can't tell till we look

18:02at this main key over here and we have

18:05some terms we need to add to our

18:06vocabulary Von Messi stress what is

18:09mises in a short definition it's

18:11combined stresses so things like Shear

18:15bending torsion stresses we're combining

18:18those as one common stress so we can sum

18:21the squares and square it and get that

18:23kind of result we can relate that to the

18:26yield strength of the material because

18:28we don't when we pass the yield strength

18:29of this we're going to assume this

18:30material is going to break especially

18:32this acrylic because it's very brittle

18:33so it's not going to have a lot of

18:36deformation occurring after the yield

18:38strength of this once we get to the

18:39yield strength it's going to be snap

18:40crackle pop for this thing pretty much

18:44um

18:45looking at the yield strength that is

18:47pulling up from the material we selected

18:48right here and this is all in PSI and if

18:52you notice this little arrow is showing

18:53that up right here so what we're seeing

18:55is anything that is probably red up here

18:57anything that's getting close to Yellow

18:59we're really getting close what this

19:01material can handle so if I start

19:03looking at stuff odds are more than

19:06likely this thing is going to break and

19:08this is not a good sign we can see where

19:10the stresses are developing and maybe we

19:12want to come in here and add some more

19:14material in this member or this member

19:16here you look at things here these

19:18members are really not doing much in

19:20terms of load on the stress on them

19:22there's not a lot of stress in that so

19:24if we wanted to make the frame lighter

19:26for some reason we could come in here

19:27and decrease the material here that's

19:29not going to make it hold anymore but

19:31it's going to make the frame lighter and

19:34carry the same weight so we can do a lot

19:36of playing around with this some other

19:38things I want to point out that will

19:40help you on your design because you guys

19:41are going to have to design your own

19:42frames and figure out what kind of

19:44standard Trust system you want to use

19:46what kind of members you're going to

19:47have and how many of these nodes I'm

19:49going to put to keep my members going

19:50from one side to the next and you need

19:52those because you can get out of plane

19:54bending if you don't have those and it

19:56could cause your your structure to fail

19:58and the FEA would analyze that as well

20:01so what we want to do is come in and

20:04talk about another tool that you might

20:06guys like I like this design Insight

20:09right here and there's a neat little

20:11scroll bar for you if I bring it all the

20:13way down here this is going to show me

20:14the the most loaded items and if I

20:16slowly increase it I can see where the

20:19highest stresses are going to be and

20:21this is a little bit clearer for me so I

20:23can really see the members in the

20:24sections and the areas that I need to

20:27improve on okay

20:30now then that's one run of the part uh

20:34can I change my geometry and rerun this

20:37yes down here we have model we have

20:40static so let's go to the model

20:42and what I'm going to do is add a member

20:44from this node down to this node and

20:47probably the easiest way to do that is

20:48to just go to sketch and I'm going to

20:51come off of this surface right here

20:55and I'm going to go ahead and draw a

20:58center line from here down

21:02and I'm going to do what I did before

21:03we're going to offset that 100

21:05thousandths on each side that's looking

21:06good

21:08I don't want to redraw these circles or

21:10arcs I can use convert from entities I

21:13can convert I don't want to do that one

21:16I was thinking it's going to get the

21:17face there sorry I'm going to get this

21:18Edge this Edge that looks good

21:21and I need to come down here and

21:23probably pick

21:24that edge

21:25and that edge so I have the four edges

21:28and now there are black lines there you

21:30know so there's not a black line here

21:31where I didn't select there is one there

21:32so I can come in here now and do a power

21:34trim you guys are real fans of that and

21:37I like that we trim that off and those

21:39geometries will be associated

21:42to the geometry in the part and you

21:45notice I accidentally cut my line there

21:48so if I didn't want to do that I can

21:50undo that's going to come into place I

21:52can come back in here and say I wanted

21:54to trim that off and those two off and

21:56so we now have this member and what I'm

21:59saying by associative if I change the

22:00diameter of this circle this would

22:03change in respect because I converted it

22:05from that edge and so it's Associated to

22:08it so we now have this sketch ready to

22:11go

22:11and and I drew this intentionally on

22:15this face when I drew my main Extrusion

22:17I drew it on the back side and extruded

22:20it upwards okay going up positive Z so

22:23when I did this sketch I'm going to have

22:24to extrude it negatively into the part

22:27and what I want to talk about is I'm

22:30going to come in here and I've got this

22:31I'm going to hit extrude when I extrude

22:33this you notice it's coming out the

22:34wrong direction so I can flip the

22:36direction

22:37I could accept this Dimension right here

22:40but if I ever come in here and change

22:42this thickness I'd have to come in here

22:43and change it as well so what I'm going

22:45to do is come in here on the back side

22:48of this part right here

22:49and I'm going to instead of saying blind

22:51I'm going to say up to surface and I'm

22:55going to do it to that surface right

22:56there so that anytime I change the

22:58thickness of my part that member would

23:01change exactly to match and so I only

23:03have to change one number in that whole

23:05thing now these things are merged

23:07together and it is now a new frame so

23:11let's say I did some changes and I

23:12wanted to analyze these changes I can go

23:15back to static

23:17and all I had to do because I didn't

23:18change any of my load conditions they're

23:20all showing good it's just rerun the

23:22study

23:22and now I can come in here and verify

23:25what's happening to my structure

23:29and it still looks like it has some

23:30heavy distortion on here one thing I

23:32noticed is I did a little probably a bit

23:34better on terms of my load but that

23:35remember adding it really didn't do that

23:37much for the overall performance of this

23:40structure so I would need to do some

23:43more testing figure out where I want to

23:45put things and how I can come in here

23:46and strengthen it maybe I need to make

23:47these members bigger in my next revision

23:50and the way I drew it I can go back in

23:52there real easy and change those in the

23:54sketch and I can modify that out and and

23:58come back in here and see this now what

23:59kind of load

24:01um do I want to see let's say that

24:03eventually I get it where the the yield

24:05is not showing and the frame is a lot

24:07stronger well you can come in here and

24:08put a bigger load on here so I could

24:11edit this definition what if I wanted to

24:13put 75 pounds on here now some of you

24:15guys are going to have frames that can

24:17hold 100 150 pounds per side and that's

24:21going to be pretty impressive so I

24:23changed that it puts a little notice

24:26here that I need to change the results

24:27so I'm going to rerun this

24:30and if you notice because I put a higher

24:33load on it now things that are green are

24:34definitely going to break this Frame is

24:36getting weaker it's not so much the

24:37frames weaker it's just I'm putting a

24:39bigger load and it will break in those

24:41areas if I wanted to see what it would

24:44look like with a 35 pound load I could

24:46say would this thing hold 35 pounds we

24:49could go on down that's the opposite

24:52direction we want to go rerun this and

24:54you're going to see the yield come up

24:56off of this I wanted to show it so there

24:57the yield is off this so if it's red

25:00it's probably none of this is probably

25:01going to break at 35 pounds so my frame

25:03will hold

25:0535 pounds but again I said some of you

25:08guys are going to hold 100 150 pounds

25:10and we want to make our frames as light

25:13as we can and hold as much as we have

25:15I've seen some people with some very

25:17light frames hold some high loads on

25:19there so this is hopefully going to help

25:20you out to do some analysis using FEA

25:23and give you guys some cool ways you can

25:25design your frame and do on the Fly

25:28calculations with it just like we would

25:30do in Industry because we would do this

25:32and then once we get it to where we want

25:34it to be we can go out and manufacture

25:35it and when we go to lab

25:38we're going to take this Frame then and

25:41we're going to

25:43take a dxf of this file we're going to

25:45cut it on a laser we're going to cut a

25:47left and a right side you're going to

25:48assemble them and we're going to load it

25:50just like we talked about in the

25:51simulation and then we'll compare your

25:53simulation with the real word real world

25:56results that we get now how do I get

25:59this to dxf okay here's my and I'm in

26:02the model mode here and what I'm going

26:04to do is go to file and first thing I'm

26:06going to need to do is probably save

26:07this and I'm going to save this as on my

26:10desktop as just demo for right now

26:14yeah I've probably got another demo out

26:15there because I save a lot of demos on

26:17there

26:19and I saved my file as a SolidWorks file

26:22now you're going to turn your SolidWorks

26:24file into the TA but you also need to

26:27save this as

26:30a

26:32dxf now dxf is an exchange format that a

26:35lot of our lasers and machines plasma

26:38cutters can use and it's a AutoCAD type

26:42format so I'm going to use dxf and I'm

26:45going to say save it's going to use the

26:46demo name on here again you're probably

26:48going to have your group and your trust

26:50number on there

26:52now what it's asking for me is don't hit

26:55the green arrows and go through this

26:57this is asking me what view to export

26:59right now I'm in this kind of view if I

27:01say current it is going to take a

27:04snapshot of this line just like this

27:06what I would want to do is pick front

27:09because front view if I open this up was

27:12this view on this plane that's my X Y

27:14plane I want to change it to front view

27:16if I was going to leave it current I

27:18would have to hit spacebar and say

27:20normal to then I could have said current

27:21but probably the best way is just say

27:23front view right there and just say

27:25accept

27:27and what it's going to do is it's going

27:29to show me my frame so what we can see

27:31is the frame here and I don't see

27:33multiple lines this is looking good and

27:35this is what I'm going to save

27:39and that is now a file that I can take

27:43to the machine and what I'm doing in the

27:46background here is I'm opening AutoCAD

27:47you don't need AutoCAD on your machines

27:49but I want to show you what this looks

27:50like in a little bit clearer format and

27:52how we handle this

27:54this is going to have the geometry that

27:55we're going to cut our parts out one of

27:57the things that this is doing is our

27:59laser is just going to follow these

28:00lines and cut this part out it can't

28:03change the thickness of members so we

28:05can't come in here and lighten out one

28:06member make it thinner it's just going

28:07to be a profile cut it's going to cut

28:09these holes out and then come out here

28:10and cut the middle sections out and then

28:13cut the outer frame out

28:14things that we'll end up ditching off

28:16for you guys is this stuff right here

28:18the the SolidWorks instructional stuff

28:20because we are using an educational

28:23version of SolidWorks it always puts it

28:24on there so we just have to go in there

28:25and mainly delete it for you guys but

28:27you don't worry about doing that that's

28:29something that we'll do on our side and

28:31then we'll

28:32import this into coreldraw and into the

28:35software the machine

28:36um works with and we'll cut your parts

28:39out so hopefully that helps you out in

28:42understanding how we're going to cut

28:43your parts and how you can design them

28:45and I'm anxious to see how well your

28:47designs hold up