UM3 PRINTING WITH PMMA FOR MOULDS FOR CASTING

[geoff 0]

I would appreciate some help and guidance

Has anyone tried out PMMA with an UM3 and if so  whose product did you use and what temps proved successful for nozzle and the bed,  

Thanks in anticipation

[geert_2 210]

Up till your question, I hadn't even heard about PMMA as 3D-printing filament, even though I have used lots of two-component PMMA materials (powder + liquid) and PMMA-based light-curing materials.

So I googled it: indeed it does exist, and some people like it, but some complain it is very brittle (which is what I would expect, similar to two-component PMMA), and it shrinks too much, like ABS.

Is there a reason you need PMMA, and can not use PET, polycarbonate, some high-temp polyester, or even PLA (but only for moulds not subjected to temperatures above room temp)?