Leaking Hot End

By | February 12, 2014

Here is why you don’t want to use a thin Teflon tube in your hot end.     The pressure will build up and pop a hole in the tube.    The PTFE in this hot end was 1.8mm and OD 2.3mm which is only .25 wall thickness.    It ran alright for a few hours and then started oozing plastic out every where.    This weekend I will modify it to use a ID 2mm and OD 4mm tubing.   I’d like to have an inner diameter of 1.8, but I just can’t find it anywhere with a decent wall thickness.