4 ms·
Do you know if this is explained in detail somewhere? Both Wikipedia (English / German) and various websites only repeat that you need an angle "to lift the mol
by moring 3y ago
Do you know if this is explained in detail somewhere? Both Wikipedia (English / German) and various websites only repeat that you need an angle "to lift the mold and to avoid stress cracks", but none seems to explain why. (My guess for the "exit" part is friction due to imperfect mold/part surfaces, but so far I can only guess)
- userbinator 3y agoYes, friction, also exacerbated by shrinkage during cooling.
- unleaded 3y agoEngineerguy explains it pretty well: https://youtu.be/RMjtmsr3CqA?t=391 https://youtu.be/RMjtmsr3CqA?t=391
- mips_r4300i 3y agoShort answer is 3 degrees draft is pretty safe most of the time, assuming you have some texturing. A shallower texture means you can get away with a bit less draft and vice versa. The reason is that you want the tool to release the piece and not get bound up. Shape and cooling also factor in, but for simple box type shapes with no large cutouts, this is usually predictable.