A new proximity sensor "fixed" the Tina2S I acquired (in that it now sort-of works), but there remains a problem: although it goes through the 3-point pre-print levelling, and although I can see the Z axis lead screw making adjustments as the nozzle moves in XY, it doesn't seem to be making sufficient/correct adjustment.
The effect is that the first layer is thick on the right hand side and thin to non-existent on the left (the nozzle nearly scrapes through the tape). I never saw this happen with my Tina2.
If/when I find a solution I'll let you know.
Tina2S Bed Levelling Issue
Moderator: CrazyIvan