My SolidWorks is old and doesn't include new features.
The threads my version makes are strictly cosmetic - sound's like yours are too.
Threads for printing need to be solid-model geometry. Thus, I model threads when I need them.
There are many sources for proper thread geometry but, if your only interest is threads for mating plastic parts without need to mate to 'real' threads, you can model many different thread forms... from plain stupid to properly engineered.. a bit og Google'ing will help you with that.
As previously posted - you'll need a revolved cut (or revolved boss).
Lastly, here's a tip: Consider making a Bolt (or rod) with threads, then, use it to model a 'Mold' cavity in solidworks. Of course, the mold part should start with the shape of the mating part, such as a Nut.
I chase the threads with a bottom-tap or a die (if external thread).
[added 3/8-16 bolt]
FYI - a word about the attached STL
Printed results will vary depending on:
Material & shrinkage
Print parameters (particularly the Flow Multiplier)
I print threaded parts with 4 shells because chasing with Tap/Die will cut into the wall - thus, ensure you have enough material to remove.
If making threads and don’t have Tap/Die, you can scale one part in the plane of it’s diameter. But, for $10 you can buy useable (low quality)Tap/Die sets at Harbor Freight
- (1000.79 KiB) Downloaded 114 times
- 3/8-16 Bolt
- (1.99 MiB) Downloaded 104 times
- Printed & Chased
Last edited by greybeard
on Tue Feb 14, 2017 9:12 pm, edited 2 times in total.
3D Print Parts