Join Gabriel Corbett for an in-depth discussion in this video Advanced modifications, part of Cert Prep: Certified SOLIDWORKS Professional (2015).
- In this example, we're going to be taking a look at modifying a part, possibly rearranging the features and then solving maybe some rebuild errors that we might encounter in the process. So first thing's first, let's take a look at this 4.4.1. You can see it's a shelled part and we're going to be modifying that part to look like this part here which is 4.4.3. So it's a little bit taller boss here at the bottom. The shell looks a little bit thicker. It doesn't have this cut that goes all the way to the top as you see down here. It actually is cut down a little bit.
And we've added a fillet. And this 4.4.2 is kind of an intermediate step showing us what some of the rebuild errors are going to be. So first thing's first, let's open up this part here 4.4.1 and see if we can make a few of these changes. So first thing's first, this Boss Extrude, let's go back up to that feature. It was 50, we want to make it 100. Make that change and everything rebuilds OK. Great. The shell, it was 10, let's make it 15. Alright, that looks good.
Now what I need to do here is I need to make sure that this does not come all the way up to the top. So I need to go back and find where that feature is and it looks like it's here, Boss Extrude 3. And go to the sketch itself. Instead of it connecting to the top like it is let's delete that relationship there and let's bring this down a little bit and then define a dimension here. So I'm going to type in 25. Once I have that there, click OK. And you can see what happened is all the sudden the shell doesn't work anymore.
This has not been shelled out, this has got a hole in there. We have some issues now to deal with before we can get to that final stage. So let's go back and take a look at the shell feature itself. And you can see that I'm removing some of these faces but not all of them. So this is a new face here that I need to add-in. And let's try that one out. And you can see OK that works a little better. Now it goes and removes this material in here but now I have this overhang and I don't want that either. So I have to go back to that shell and this time I'm going to remove the outside of this boss here.
Obviously this is not correct either so now I need to go back and make some type of a fix or some kind of a modification. And this is typical of what you might see on the exam. Something you're not totally prepared for, you're going to have to figure a workaround to solve the question. So I'm going to choose a circle here, and I'm going to snap right to the center point. I'm going to snap right to the corner of that. Out here I'm just going to do a Convert Entities and then make a couple of lines from this point here to that point there. Or you could even go to the origin if you wanted to or the center of that circle.
Either way. And then to do a trim, so I'm going to trim this away. Trim that away. And that should be the shape I'm looking for. Now this still shows up as blue so we want to make sure that we do snap that right to that corner. And same thing over here. Let's see, make sure that's snapping on there... Everything shows up as black. Now do Features, Extrude and I believe this needs to be 35. Once at 35, now we have a feature that looks pretty good and all we need to do is add a fillet.
It's a 10 millimeter fillet to these 2 corners here. And of course we've made a modification to the part so then we're probably going to have a free response to weigh the part, in grams, and type it in. Notice there's 4 place decimals here, let's make sure we double check and change that to 2 place. So we get the right values in the 2 place decimal, and that's what we're going to be inputting into the testing client. So those are the basics for making advanced modifications to a part. You might have to rearrange a feature, you might have to go back and change some rebuild errors.
A couple of pointers I do want to point out is if you're going to make a cut through a part, instead of choosing an outside face like this I would definitely recommend choosing something more like a right plane and then doing a cut through or through all in both directions on that. That way, if there's any modifications to the part, it doesn't have a rebuild error like you would if you were on this outside face here and maybe it was deleted or changed. And that would cause some rebuild errors that just flow downhill and you have a bunch of features that might fail. The other thing I want to point and stress for sure is when you're going through the exam make sure at the end of each question you save the part and then save it again as a new part.
For instance, there's eleven questions in the exam, you'll have eleven parts saved. So if there's anytime you find an error you can always go back to that question, to that part, open it up and make a modifications. A lot of times there's little subtle things in the exam that you might overlook. And once you've modified that part a bunch of times it's hard to go back and then try to fix your errors if you find them later on in the exam. So make sure to save each part as soon as you're done with it before you go on to the next part. And then again save it or open then new part for that next question.
He also breaks down the three segments of the test (part modeling, configurations, and assemblies), providing strategies that will help you pass each section. At the end of the course, there are two sample exams to practice what you've learned.
- CSWP requirements review
- Working with sketch entities, tools, and relations
- Using the boss and cut features
- Performing sweeps and lofts
- Smoothing corners with Fillet and Chamfer
- Creating linear and circular patterns
- Setting up equations
- Creating multibody parts
- Setting mass properties
- Working with materials and constraints
- Inserting components
- Setting up reference geometry
- Arranging features to change the part
- Working with suppression states
- Using a design table to build configurations
- Establishing standard drawing views
- Annotating your drawings