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All Springer/NP/PCP Air Gun Discussion General > 3D printing and files

"Constraining" is Paining!

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rsterne:
Thanks for the tip on the ""Lock" constraint, I haven't used that yet....  ::)

I am having much better success at doing each constraint right after drawing a line, arc or point.... That way I know the line is continuous as I build it.... I am learning, for sure!.... I agree, "offsets" would sure be a useful feature....

Bob

rsterne:
WOW!.... That "Lock" constraint works great is you are just after the shape and not dimensions....  8) .... However, since it gives you dimensions, you can edit them if desired....  ;D ;)

Thanks so VERY much for the tip!!!!

Bob

Bubba18655:
I usually use a multi-line to get the rough shape and then go around and constrain the elements. It looks strange when you add the first constraints but then it straightens out. You can also use a spreadsheet to constrain all off the elements.

sb327:

--- Quote from: Bubba18655 on March 27, 2023, 12:46:28 PM ---I usually use a multi-line to get the rough shape and then go around and constrain the elements. It looks strange when you add the first constraints but then it straightens out. You can also use a spreadsheet to constrain all off the elements.

--- End quote ---

That’s a good tip as well. I use multi-line as much as possible. Single line doesn’t always give the coincident constraint, even though it is highlighted when I click.

Dave

Scotchmo:
I feel like I’m too old to learn something like Freecad to reach the same level as I have with AutoCAD. Decades ago I used a Pro Engineer for a big project. That’s the only time I used a solid modeler with constraints. I’m still using AutoCAD 2000 to generate all my 3D models and stl files for 3D printing. No constraints has its advantages and disadvantages. I’m switching over to Linux, and I have been able to get AutoCAD to run on my laptop in Ubuntu Linux using Wine. But it took awhile to stumble on the fix and i have not been able to replicate that in my desktop Ubuntu system. I’m going to try running Windows and AutoCAD in a virtual machine. Ultimately, I’d like to switch over to native Linux/Ubunto apps. I’ve researched it some. Bricscad runs in Windows and Linux. It is very much like AutoCAD. I believe that the Bricscad Shape modeler is free for indefinite time (full Bricscad is a 30 day free trial). The built-in 3D modeler is what I use AutoCAD for mostly these days. I’m going to try Bricscad Shape to see if it’s a suitable replacement.

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