hey everyone welcome back to fully defined my name is Chris and in this video I'm going to take you through a cw8 practice exam CS sw8 stands for a certified asside Works associate and that certification is the entry level into the side Works mechanical design uh training certification program I should be clear up front I do not have the CWA in fact on my journey into certifications I skipped it I went straight for the solid works professional sometime around 12 years ago I am a certified SolidWorks expert which is just about the highest level you can achieve what I'm doing is researching where people need the most help and where the most people need the most help and it seems like there's a lot of designers and Engineers out there that are looking for help to get their cswa in this video I'm not going to go through everything like downloading and setting up the tester software okay or talking in detail about all the different certifications purely looking at the practice exam and maybe some things that you can do to practice if you're having any particular issues uh with any elements of that exam also in the description below I'll link you to some other reasonable quality videos taking you through the same exam or other examples of it all of these are free YouTube is a great resource for learning let's get into it so you can see from the SolidWorks website from their certifications there's a link there to Mechanical design cswa and that takes you through um a little bit of information about the exam what might be included in the challenges there and a sample exam at the bottom and that sample exam is what I've got open here on the left screen when you download that sample exam and open it up you need to with any zip file you need to make sure you extract the files to another folder before you're trying to open them in solid works I've done that here and you can see there's uh two there's three part files and the sample exam PDF so let's go to that PDF and let's run through this uh practice highly recommend for anyone attempting these exams you have two screens or if you don't have two screens at least set up your One Singular screen so you can have the testing client or in this case the sample exam on one side and your s work software on the other side now we're not I'm not going to read you through the entire PDF we're going to skip through here and go to the important stuff which is the first questions which start you off for your exam so uh the practice exam starts here with a couple of questions on drafting now I'll get my head out of the way so we can see the answers question one drafting competences to create drawing viewed B that's this one on the right is it necessary to sketch a spline as shown this spline is this organic shape on the left on drawing view a insert which solid works VI type so what it's asking is once you draw this spline on that drawing view which button but you're going to press to get drawing view B section crop projected or isometric and the answer is crop a section view well that doesn't work with a spline a projected view is another third is another angle of that view same thing with isometric crop is where it actually Cuts away everything outside of the shape that you've sketched so B is the correct answer now question two goes over these two pages uh to create drawing view B and what they indicating here is this section in the top right corner it is necessary to sketch a spline and shown on drawing view a the spline in that same section on the corner and insert which sold Works view type is it an aligned section view detail broken out section or section this example where it is showing only a partial section of your object is related to a broken out section view so the answer for this question two is c those two questions out of the way we can get into the tricky stuff and that is the part modeling so our first step well the first thing you'll want to do in this exam is to recreate the model that you can see on screen and these will be used to answer questions 3 to four okay so we can see all the information here and it does give us some other information over the page for dimensions a b and c and giving us certain numbers for those and then the first answer is multiple choice so in the exam you'll have four options and you need to find the option closest to the measure ment the mass value that you can find after completing the model not going to focus on any of that first first job is actually just sketch this model correctly okay now to do this exam and to do this task you should have already spent a number of hours learning the software I would recommend it's between 30 and 50 hours that would be equivalent to having spent one semester of three 3 hours a week across 12 classes that's 36 hours plus homework okay if you're able to do that then you should get most of the way there to be able to creating this kind of geometry uh without too much difficulty okay now important step unit system is mmgs so it must be in millimeters it's in the bottom right of the screen if you're in inches or anything else just make sure you click on that arrow and click to mmgs so you're in the right units all right so let's start here with part modeling part two now what we're going to do is um create this model now if you've already spent a semester couple of weeks at least learning the software you should by this stage know how to sketch Dimension and create extr and cuts so that you could create a shape like this if you're not yet at that point I'd recommend you you check out some of the other tutorials and resources available online to get that confidence up l in description below what we can see see from these three drawing views is a bunch of Dimensions some information about relations such as the tangency relation radiuses also we can see the letter a b and c a b and c refer to these three measurements over the page here we can also say the unit system millimeters and a b and c we're going to use those AS Global variables which means we're going to have them controlled by a value that we input and we can change because the way this exam is set up is that a B and C equals these numbers to start then once you've answered the first question the later questions ask you to change those numbers now you can do this without Global variables that should make that clear as well but it's a pretty easy skill to put in and to learn for your exam which can make things a little bit quicker so I'm going to show you how to do that here we're going to right click on our part at the top of the feature tree we're going to click on hidden treat items equations and manage equations and in here we're going to add a and we're going to add the value which is the number we can see here a is going to equal a number which is 81 and we're going to add another Global variable b b will equal 57 and then C is going to be 43 press okay and now we have our equations we can see a b and c now there is an alternative to do doing that if you're unable to do that I'll show you how to do it the other way as well now that we've got those let's go ahead and complete our sketch and we're going to do that on the front plane and we're going to use this circle as our the center of that Circle as our origin so we can put that in as our very first sketch I have a setting on for my sketches which means I can draw and input a dimension without using the dimension tool to get to that option we go to tools options sketch adding this option here enable onscreen numeric input on entity creation tick that one on and also tick on the second one and that will allow you to use that setting as we go so we create a rectangle and our rectangle is going to have the outside shape of that part so this is going to be our bounding box and I'm going to Dimension it from center point of my circle 14 and 14 because what I'm trying to do here is get everything fully defined which means all my blue lines that can move around I want them to be black all right so a now this is where if you don't know how to do Global variables you can click the dimensional that line you can drop it and you can input the number for a which is 81 we've done our Global variable so here we're going to PR press equals go to Global variables and select a and then press okay and we should see the equation sign next to that number that shows it's linking to that equation I'm going to do same for the side which is going to become B all right and now I have a bounding box of the shape that I'm sketching okay at this point just having a look at the sketch I've actually put in an incorrect Dimension that's 14 here I can delete it or I can change it to change it what we need to work out is actually what I need to change it to and uh what we can see from this sketch here I'm just going to move that okay um I've I've used this number 14 here but that's wrong actually coming from this line across the bottom this one here so I need 14+ 19 to get that position so I'm going to go here 14 I'm going to go plus 19 enter and that's going to move it up to the correct height okay if you enter a wrong Dimension you do not need to delete the dimension you just need to be able to change it okay now that position looks much better let's draw our shapee so I'm going to draw straight line down line across straight line now to go get a little radius I'm going to bring my line out go back in and curve down to get a radius and then again back in down to get an arc line line line I'm going to stop here and press Escape I can't get that I can't get that curve okay so I'm going to do continue on from the side view sorry I'm going to continue on from the left side draw across down and then my arc there to finish off I just need to change that shape okay and now that's our complete shape what we need to do now is dimension it but having set up the A and B Dimensions already it means that we're pretty close with the geometry it shouldn't change too much as we're adding these Dimensions let's start from the top right hand corner we're going to add a 45° angle for this one and we're going to add a 5 mm Dimension here and all we're doing as I'm dimensioning is going through and ticking off one by one these Dimensions okay so you don't have to physically mark them off but that is a tool you can use if you find that you get to the end and you're not sure which Dimensions you're missing but there's a simpler tool that might be able to help okay 29 now see when I do that and this section here crosses over itself well I just need to grab this line and move it to the side okay and then I can keep going turn this one 19 59 now the center point here of that 29 that Center Point is on that line so in our sketch I can grab the center point hold control on my keyboard hit the line and make it coincident all right one7 is also 45 um I we do not have this dimension yet yes we do it is say the 19 here this one so it's 19 to that center point so from here to here 19 okay let's continue 45 at the top Pi across the side that's seven we have a 10° angle for this slight section 14 mm Dimension to that point 32 mm from here to here and then a 19° 19 uh radius for that curve and then lastly 29 to this point and then we have a fully defined sketch and I can see that the bottom right screen down here fully defined now if you don't have it fully defined well cross check what you see on your screen versus what you see on my screen if there a dimension missing if there's an area that's blue okay like this see this section's all blue well here's my tip click and drag one of the blue points and move it around and see what happens and that will indicate to you what dimension is needed all right now with that done we can extrude it and we want to extrude it by the distance C let's extrude it midplane and let's hit for distance one equals Global variables C okay okay and that bit is done so we've completed the model it's a good idea this point to save so hit the save key find somewhere and find somewhere to save it and give it a name just so you don't lose your work right let's continue on so now we've done the model we need to make sure that we've got all of our unit system and um materials correctly assigned so our unit system we should already be in millimet correct okay um the material we need to apply AIS SI 1020 steel to apply material right click on material go edit material and we're looking for 1020 steel and we're looking for that 1020 steel with a density of 0.79 G per cubic mm we can see here under the density of this steel 7900 kg a m cubed 7900 and 0079 these are the same now what's very important and I saw this in one of the other tutorials is like this next material down you can see the mass density 787 zero that's different okay and that will cause you to get an incorrect answer so make sure you colle selecting the right material press apply close you should see the material here in your feature tree and now that material is correct so at this point we should be able to find the answer to find the answer we're going to go to evaluate Mass properties we're going to look here on our screen and we're looking for mass and my Mass is answer D so our first answer well we're going to assume that's correct that's the correct answer spot on to two decimal places okay step one done let's keep going now we're going to modify the tool everything stays the same except we're modifying these parameters a b and c and this is where you can just change your equations so for anyone that set up the equations with global variables right click on equations click equations change a to 84 change B to 59 and change C to 45 that's okay now hit reload or rebuild on your file or contrl B and make sure it's updated and to double check let's click on our sketch and let's see if those numbers have updated 84 59 and C 45 they are all correct now at this point we no longer have multiple choice with we have to input an answer so what is the overall Mass our overall Mass we would say is 10323 2 I'm going to write that in a comment and showing out of the screen here is my comment answer to what did I say it was 1032 okay uh one3 2.32 okay one3 2.32 all right that answers in there next question now we started to do some additional changes these images are to be used to answer question FES now before you do the changes my suggestion is to look through all the information for that question and then come back and do the process of Ting while change it so it's telling us here in systems the same materials the same density the same use the part code in the previous question and modify by removing material and also by changing the following parameters so let's change those again manage equations 86 58 44 all right change those three now let's change the geometry so my recommendation here have a look at the standard views and see what matches the views that you're given in that drawing now this view is view number two if I want to save this view I can hit space bar and I can press New View and just put in two now this one to the left it's about this angle here I just did that by moving hitting some Arrow Kee all right this could be view number one and then this could be view number three we can ignore the color difference there's nothing to worry about there now from view number one if I'm comparing to the view that's over on this screen I can see that it has a cutout area and I'll show you what I mean this section here the cut out material they also cut material here okay so we want to cut that and we want to cut this those are the things that we want to cut I think that the other thing that I can see is there's another hole here this hole goes all the way through so we got to add that hole too they're the two main things I can see that we need to do there may be bll let's go and have a look at the dimensions this view is a top view let's go to our top view and we can see what it looks like and we have a dimension that is 19 on the left and then we have a 12 and a 24 on the right and then from the front view we can see where that hole is 11 and it's 14 and 14 from our top and sze let's add the hole and we're going to add it by changing the original sketch placing that hole dimensioning it so using my 14 from the top and the side and then H accept on the sketch now that hole is done so I don't have to do anything else with that hole let's continue to look at these views and then I can see this section view mm section view mm is important because that is this view here that line running through the middle so we can see there's a hole um a circular cut it's got a radius to it with a 41 mil radius and that is offset 12 mm from that outside so here's what we're going to do on our front plane we're going to do a new sketch and we're going to draw a circle here with a radius of 41 now when we're drawing circles we get a diameter so what we need to do you can either work out the mass in your head 41 * 2 is 82 put that in alternatively you can put in 41 * 2 if you can't work out the maths yourself you'll get the same result 82 diameter to be sure I can press laders I can change that to a radius and it will show me radius 41 I need to now um Dimension those other elements so the center point is in line with this Edge so I'm going to make that coincident and then the bottom Arc here crosses over this Edge so I just do it as I selected a point I put a sketch point on my circle and I move that point to be coincident with this Edge I can now Dimension from that point to this top Edge to put in that 36 mil 36 mm Dimension now I've got my circle I don't need to do anything fancy I don't need to trim anything away it's just going to be a cut and so if I go back to this top view and I go here now I can do a extruded cut and in this Direction I want to go offset from surface 12 mm and then in the opposite direction we will have to work out some maths because it does not give us the number it tells us 24 mm but we can work that out can't we now way we can work that out is to look at the numbers that we're given C is 44 so when I'm looking here and I have C = 44 then I have 12 24 so 44 minus those two is what's going to be X if I do my maths with my calculator 44 - 24 - 12 = 8 so x = 8 so now I can do the same thing with Direction number two for offset from surface that's going to be eight hit enter and we've got that shape done okay very nice now that's the first part the second cut is that 19 one now is there any other information for 19 the tricky thing that they've done in these drawings is that these two views you see on screen aren't to scale okay then they're not it's not like a projected view from one to the other the way I can tell that is because look where this line is here okay and look where this line is here if this was a front view and then a top view those would those outside edges would be aligned all right now why this is important is because this Dimension 52 at the bottom okay that gives us this line and that line is actually the one that we need here so what we can say is from this top view this box that we're going to cut through is 19 high from that edge and it's 52 from this Edge all right we can see that down here so let let's do that we'll go to our top plane do a sketch draw a rectangle from the outside point and I'm going to make it 19 by 52 sorry it's not 19x 52 it's 19 and then we're going to add a dimension from the outside Edge that is 52 like that then we're going to do an extruded cut through all and we're going to go through all both directions there we go now let's do a check before we go and do our answer we want to check each of these views to see if we've got it right what I'm going to suggest here is we go to view number one and we see does this look like the left image yes view number two this also looks like that next image it doesn't need to be exactly perfect but it should be close enough and the last one view number three hole bit of a curves bit of a Cuts ah and now here we've identified or I have at least something that we missed this is why we do these checks in this section on the third view there's a a cutaway we haven't done that all right so we have to work out where that information is and put that into our model so and we can see it here on this next bottom view all right so we're going to go to the outside face I'm going to draw a sketch and it is 19 high and we're going to go all the way to this Edge and all the way to the Bottom now I've just made that cinear but I'm going to check that that's 19 and that is okay so we've got 19 all the way across there and then I believe that the view that we're looking for to show that cut is this side view which is here you can see this one and that says that the cut goes across 19 so we're going to have an extruded cut blind 19 all right and now all our views should be matching what we can see looks much better let's say let's go to see what the answer is they're asking us for and there is what is the overall Mass this is step three we're going to go to evaluate Mass properties the mass is 628 I'm going to copy that I'm going to go to my comments and add another comment here answer three 628 gr okay okay let's continue not much time to waste now uh last question I think in the modeling is this question three okay for this part now we are moving quick through this tutorial but in the exam you have 3 hours it's plenty of time all right now question six we're going to be cutting away some material you can see that here okay and you can see that with this 1 mm wall thickness so we're going to be cutting away we have a section view here showing us how that looks how that deep that is it's going 12 mm so step four modify the part by adding a pocket only po only one pocket on one side is to be added it's not symmetrical we're not changing any other dimensions we're just adding the pocket you can let's go ahead and do it we will start on this side view and we're going to draw this 1 mm wall to do that we're going to create a sketch we're going to use offset I'm going to hit 1 mm and then reverse so it's on the inside face now the section view that you you can see shows us that the cut a sec I'll I'll replicate the section view it's essentially this view here the cut is going to 1 mm away from this face here this face so the first cut we're going to do we're going to go extruded cut offset from surface 1 mm now why I'm saying 1 mm even though it's not showing us in dimension is because it's said typical one typical and that would mean that that wall thickness is one around those sections I'm going to that we'll continue okay so that is the first cut the second cut goes deeper and that's where we get this 12 FR and that is here on this view where we need to cut out all this material in here up to 12 mm from that wall so to do this one we're going to do another sketch on that face and convert the edges I'm then going to use this edge here and I'm going to offset this one 1 mm and then I'm going to do an extruded cut I'm going to select this Contour I'm going to go offset from surface 12 I'm going to select this outside face press okay now just for comparison sake let's put a color on and let's save and let's do a section view to see how we compare and even with my section view here I'm going to hit keep cap color so you can see our thickness and here we are matching that view that section view are we matching the 3D View which is view number two sent I say yes I think that looks very close okay let's assume it's correct let's go to our Mass properties and we can see our mass is 432.32 and we have completed our modeling challenge so I'm going to save this and we'll come back to the answer after we've completed the second part of the exam which is assemblies now before we do it before we create the assembly again in your exam go through the questions all of it before you start all right so you can see what's required of you now there's the answer key we one with that just yet I've only got two pages here this image used to be used for answers questions seven and eight it's an assembly you can see some angles and some numbers build the assembly download the zip file and open it we've done that save the parts import them create the assembly using the following conditions pin up concentric P then faces are coincident units are millimet assembly origin is shined and then set angles of a b and c to 25 125 and 130 then we need to work out what is the center of mass of the assembly okay let's do it I'm going to create a new assembly I'm going to go to my folder click my three parts and drag them in um I'm going to set don't show again on this and keep solid works textures only and I'm going to go to the image and recreate this with my origin being at the top of that green one okay so by this point again if you're doing this exam I would expect you know how to use the basic Mains required already so let's go through the process I'm going to mate my top plane will be to that face and then if I look at the long pin my origin where's its origin oh its origin is there so I can actually use those two to mate and align and that part is fully defined so then let's grab one of our pins in and get those mated one of these in now it has um X Y and Z and X in in this case is my front plane so I want that to be in line with this um face so they're parallel and that makes this chain link part fully defined my short pin is underdefined but that's just the rotation I can lock the rotation and then all those three are fully defined let's save just in case um sample exam assembly and now from here I'm just going to duplicate the parts I need so I'm going to get another one of these I'm only going to add them as I go so I'm going to mate those two and I don't know if there's a gap between these or not it looks like not so I'm can do coincident that's asked to M an angle so angle a is 25 in this example I'm not going to do Global variables I'm just going to get the angles in there so I'm going to select this top face and this face I'm going to set Angle now I can see the number here it's giving me 152 if I put in 25 it's going to flip it right don't want that so undo try again with the angle but type in 180 Min - 25 and then you'll get the correct Dimension you actually need okay got that one let's just get the other yellow Parts in so I'm going to get one of these here and this is going to have an angle B of 125 so that's from this face to this face now this one does work okay so I can put the exact number in and then I want to get another one of these so I'm going to go I'll put one of those in now putting the pins in is important because because it wants the center of gravity and if you're missing some parts you're not going to get the correct center of gravity I think the last one is this one that I've got my I think I've got my angles correct last one is c c is 130 so this face this face and this face angle 130 okay done finish off my assembly with these two parts and just make sure everything's fully defined this short needs a lock rotation if I go isometric view this is the view they're using in the drawing okay so that's good save units millimet it's correct all my parts are there the question what is the center of the mass of the assembly let's go to evaluate let's go to Mass properties and we're looking here for the center of the mass which is 3 48.6 6 - 8.48 and - 91.4 and that all aligns with answer a answer one is a right so we've got that checked now we need to modify the assembly and the only thing we're modifying are the dimensions of the angles and if we look in our mates folder we should see that there's only three angles in there angle a changes from 25 to 30° now we did 180 minus 25 now we want to minus another 5 so this should be 150 so we're going to type that in and that'll update angle B went from 125 to 115 click type enter C 130 to 135 click type enter what is the center of mass and we'll go Mass properties let's Mass properties Center of mass now 32798 and 102 and you're done let's check our answers so on model one answer two now we've got the answers here on the answer key when knew already we're doing a crop View and a broken out section view easy question three answer is D 3 93 9.54 all right question four that's the first one that we listed as a comment we can see here in the comment answer two which is actually answer number four 103 2.32 is correct our next answer answer three we wrote down 6288 is correct and then our last answer for our Mass 43 2.58 that is also correct so all three of those um calculation answers where you're not giving a multiple selection choice you have to actually come up with the answer we've got those spot on and then if we go into our assembly we know that answer a was out first selection and for the very last question our Mass if we've done all of those changes correctly center of gravity Center Mass is 327 - 98 - 102 and that is the end of the assembly walk through now we have flown through that okay we've done that in under an hour granted I'm moving very quick given my experience with mouse gestures sketching dimensions and Global variables however if you were to get a similar question by following those steps in your sketching okay your full fully defining and then being very meticulous about the selections of the dimensions you're changing and checking like we did on these questions here particularly like here when you're giving multiple views of an object okay we checked underneath and we go hey we haven't done that cutout it's those things that are going to help you to set your answers to the exams and the practice exams so I really hope you enjoyed that um I'm going to link below for those that aren't super confident yet with their sketching skills couple of the other sidew works tutorials that I've done walkthroughs on that includes sketching that includes fillets that includes assembly mates also linked in the description will be some of the other projects I've shown which teach these skills from a beginner level if you are someone that is looking to do your cswa and you feel like you need more training or more resources please leave a comment below let me know what you're missing well let me know what you need and I'll work on getting that for you okay so thanks very much for tuning in hope you enjoyed this episode of fly defined good luck I'll see you in the next one hey thanks for watching the video all the way to the end if you enjoyed it please like and share if you got any suggestions for other content leave it in the comments below if you haven't already please subscribe and there's some other videos here check out thanks