I'm highly skeptical in terms of 3d printing and laser cutting. Laser cutting has issues with tiny pieces heating up and warping. It's something they warn you about when designing parts. Most of the 3d printed parts I've seen pictures of have visible ridges due to print resolution. Also, I question material strength in 3d printing. While the goo coming out of the print head will be hot the deposited material is likely to have cooled.

Source: I'm slowly designing and hopefully making my own clock. I'm targeting more mantle piece size so I can hopefully get away with laser cutting.