Speaking of plastics, why aren’t Bowden tubes (at least the part not in a melt zone) and linear rails not made of UHMW ployethylene? It’s much slipperier and wear-resistant than PTFE.
I just did a live stream last Sunday in regard to PCTG vs PETG on my channel. LOVE the PCTG… much stronger than PETG, prints very well, z-layer strength is amazing. Will be doing lots more testing with a follow-up video!