Advice sought on SLS-printed Nylon prototype - what tolerances & how to best finish?

[galenpowers]

Here is an example of a painted sls prototype. It takes some effort but SLS mechanical properties are great and the accuracy is good. It is a nice way to bridge a product into production. The product in the image is suitable for end use and has emi-rfi paint under the cosmetic finish.

DSC04973 -1.jpg IMAG0962.jpg

As far as hole diameters go, the smaller the hole is the more it needs to be over-sized in the model. This is an issue with local heating and passive fusing of material on the inside of the holes. Shapeways covers this in their design guide. The parts in the picture were printed by Xometry, The grips are cast urethane by Anza Inc. in Cincinatti.

Galen Powers