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No offense, solidworks is not the powerful... NX / Unigraphics baby is where its at.
Second, whats the tolerance of that printer resolution?
+- .003?
That ABS plastic doesn't hold very good flatness tolerances.
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If you need to hold +-.003, then you are looking at a much higher $ machine. SLA, SLS, etc. Not a machine that extrudes plastic, layer upon layer like a log house.
ABS is fine for this purpose..what are you thinking it should hold for flatness, parallelism, etc?
UG/NX= Overpriced/overkill for all but the most complex parts. Certainly several orders of magnitude better than what is needed for any 3D printer regardless of current tech. The limitation here is the machine/material combination, not the software.
You should ask some of the industry partners that make the parts what they use for CAD..No offense, but I would bet on Solidworks or Pro/E :)
I do have a upper receiver block for clamping the upper receiver for barrel installation that I designed and built on a Stratasys printer. If anyone is interested in the file, let me know the filetype you need and I will see if I can get it to you.