How do I configure polygons?

tlewis3348

I would like to be able to configure the number of sides on a polygon, but when I try to select the dimension defining the number of sides, it doesn't let me. Is this functionality not available? It seems fairly straightforward/simple. What am I missing?

I'll note that apparently, it's also not possible to define the number of sides with a variable? Is this the same issue? Again, this seems relatively straightforward. What am I missing?

If the above isn't possible, is anyone aware of any workarounds?

eric_pesty

This is not possible in Onshape (there was a thread somewhere discussing why but I can't seem to find it right now...)
The workaround is to use a feature pattern instead. 
You can use a variable to create a "wedge" of the polygon (with the angle equal to 360/#ofsides) and then pattern the sketch with a feature (or create a surface of that wedge and pattern that).

Here's an example:
https://cad.onshape.com/documents/96e5d3afd07d1fa3edb60390/w/0e5ff6523ca3c647de078cc5/e/d2eaf460d39aee68ff33619c

tlewis3348

That's a little annoying. Thanks for the workaround though.

Evan_Reese

You could also use my Prism feature if it's going to just be extruded anyway.

Evan_Reese

Ah what the heck. I have thought about making a polygon custom feature eventually for this very reason, so I made this: https://cad.onshape.com/documents/67fd84cae528dba4d012b93c/v/6020e4966b0630cb6efde5e2/e/ecce0c721f332b38bdb25f67