Sorry for slightly off-topic as I’m hoping to avoid adding an active heater.
I printed ASA last summer with the stock printer and had some warping issues. I have now insulated my X1C on the inside using 1.5 mm adhesive neoprene (white, for helping the chamber light). A 1,5 m roll 300 mm wide was just enough for both side plates and the back plate. 1.5 mm is thin enough to clear belts and other things that come near so it was more or less 45 cm (or so) per plate with no cutouts except for the fans and excess chute (and holes for a few studs but that was just push-through with a finger). I did this partly for some noise insulation (or rather vibration supression) and partly for chamber heat.
I just also installed this door seal for the left edge of the glass door. It does a nice job. Apparently the three other edges are good enough without modification.
So only thing remaining now is to actually test ABS and ASA with these mods but that will have to wait until summer, after I move the printer to the garage again.
