I designed a housing for a small circuit board. How can I create a cover based on the dimensions of the housing so that I do not have to create a whole new sketch just for the cover?
I got an error opening your file, which may be a version issue, but since there's a tilde (~) at the beginning of the file name, I'm thinking this attached file is a temp file created while SW has the real file open.
Oh I did not notice that. I have attached another file. I hope this one works. Thank you!
First thing I notice is that your Sketch1 is not fully defined.
Have you gone through the Tutorials?
Are you familiar (from having gone through the Tutorials) with Multi-body Solids techniques?
I think that is the technique that I would use.
Why should my sketch be fully defined? I took an intro to SW course this past semester. That's all I know.
Mussie Tesfay wrote:Why should my sketch be fully defined? I took an intro to SW course this past semester. That's all I know.
Mussie Tesfay wrote:
This question should have been answered in first 30 minutes of class.
Can you request a refund for the class?
Can you ask your "instructor" to join this discussion?
The instructor might also mention when you do NOT want to use a fully defined sketch. Sure, you can always break the constraints later, but if its something that has to be done in iteration (as in going back many times to readjust something) then breaking the constraints often is not good use of time.
I would agree if you are starting something from the ground up, using fully defined sketches makes sense. However, in reverse engineering from 3D scans, I have found fully defined sketches to be a liability in many cases. Some of the logic that went into designing the part is not evident, or is not there to begin with, particularly with legacy parts. Or it could be that the accuracy of the manufacturing process at the time just could not precisely capture the original design intent.
Chris Dordoni wrote:The instructor might also mention.....
Chris Dordoni wrote:
The instructor might also mention.....
In my experience - those who do not learn to walk before attempting to run - end up developing bad habits that are difficult to break and never become very good in measures of quality or speed.
In my experience - the best quality modelers, and the fast modelers fully define everything (except when there are obvious design intent exceptions).
Perhaps your experience has been different than mine.
So yes, the instructor might mention exceptions to fully defining a sketch, although by the time the beginner has enough experience it probably is self-evident.
In the Contents section in the SolidWorks Help documentation you will find a section on Sheet Metal. Study that. It is sort of an advanced topic. I am not well versed on it because it is not an application that I come across.
SolidWorks is strongly geared towards engineering design. If you had an instructor that thinks it is for making pretty pictures then his approach to SolidWorks may have missed the mark a bit.
Engineering parts have a design intent, so leaving out the design intent leaves room for ANYTHING to happen. The software has to make it's own assumptions if you do not tell it what to do. For example - you want to join the endpoints of two lines. Fine. If one point is not fixed, how does the software know which end to move, or to move both ends, or how much?
To avoid your designs from coming undone, you need to tell the system what you want. And that is what constraining the sketches is about.
[what you should really be worried about is how fast do you have to respond before the system grabs the midpoint of a line]
Before you continue on your cover, there's a few things I'd like to mention about the housing (which may save you some backtracking later on with your cover):
Yes, this probably isn't what you were looking for, but this is what came to mind when I first looked at your file.
And this is what I would be asking/doing if I was handed this assignment.
I would first spend some time getting some of these items quantified (which you may have done, but haven't shared here) before I would model a cover.
This is a lot of valuable information. Thank you! I was designing this housing for a small circuit board that I fabricated. It has SMA connectors on either end, therefore the only reason I need the housing is to prevent the connectors from breaking as it has happened before.
Thank you very much for your insight. I am very thankful for this community. I managed to design a cover as a separate part using a new sketch.
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