I’m new around here, planning an MPCNC build for the stuff I can’t print or laser. I’m aiming for 2x3’, a little larger than recommended for a first build, but the project that started me down this road needs some parts that are about 400mm long. I don’t see any reason not to add mid-span supports to the 3’ axis, so I’ll likely do that.
Since this seems to be the “what filament?” thread, what about PETG? Everyone around here seems to just recommend PLA, but as my machine is likely to need to be able to run outside, I’m a little concerned about things softening in the sun. There’s one reference in the build guide to PETG, but I’m wondering about the pros and cons. I haven’t really dialed in PETG on this printer, but I have ABS printing quite well, so it should be doable. HTPLA is an option, but expensive, and the heat-treating has dimensional stability challenges.
For that matter, is ABS not mentioned because of warping, or some other reason?
Any advice is appreciated, I’m reading all I can, dragging my feet a bit to see if the new design is ready before I get to this project.
Thanks! -Zandr