pterencephalon

Oh boy, I keep a page just for this!.

I need to update it (for example, Arachne perimeters in PrusaSlicer now let you print extra thin perimeters), but it's useful to have a reference for common tolerances/dimensions like screw holes.

But a couple of my little additional pet peeves:

• Don't put fillets on the underside of prints (against the bed). The nearly-flat angle always droops and looks bad. Use a chamfer instead, or make a fillet that actually starts at 30° from horizontal.
• The weakest direction is between layers. Design your part such that you can print it in an orientation where the thin/weak parts aren't printed where the layer lines can snap (eg, print it flat vs vertical)
• Just like the straight lines inside screw head holes, thinking ahead in your design can prevent/minimize the need for support material. The earlier you start thinking about this in you design, the easier it will be. For example, can a part be designed with a 30° slope on an underside instead of being flat? Can you think about your print orientation early in the design process to avoid overhangs?
• Chamfer of fillet inside corners, if it's a structural part. This will greatly reduce stress concentrations.

Personally, I don't use 3 perimeters on most of my prints. On my prusa, they look totally fine with 2 perimeters. I only switch to 3 if I need the strength (which also almost always means I'm printing in PETG, rather than PLA, FWIW).

My house is a fixer-upper, so usually house projects. Yard work, hanging shakes, painting. It's nice to do something physical where I can see a benefit at the end of it, when I spend my day sitting at a desk inside. It's also nice when the neighbors compliment our progress!

I'm also team onshape. I have a powerful desktop, but I still end up doing CAD from the couch on my 6-year-old Chromebook, so onshape is a champ for that. It's also nice for collaborating, which I do when working on bigger projects with my fiancee.

I got started with it entirely from the tutorials provided by Onshape itself. The learning curve was a lot less steep than I expected.

When our current car dies, I'd like to replace it with an EV - but 0% chance it'll be a Tesla.