I've had a problem installing the hotend thermistor. I found the PTFE heatshrink when shrunk was still too large to allow the thermistor to slide into the heater block. I have had to carefully cut the PTFE off from around the body of the thermistor in order to slide it in. Is it possible the PTFE heatshrink has changed spec in kits? Mine is RS kit number 472. With the heatshrink on the diameter was 2.39mm, the hole diameter is 2mm. The thermistor is 1.78mm. https://reprap.org/forum/read.php?340,283951,283951#msg-283951 Sun, 17 May 2026 10:46:33 -0400 Phorum 5.2.23 https://reprap.org/forum/read.php?340,283951,284120#msg-284120 https://reprap.org/forum/read.php?340,283951,284120#msg-284120 Treth Ormerod Tue, 24 Dec 2013 02:31:54 -0500 https://reprap.org/forum/read.php?340,283951,284102#msg-284102 https://reprap.org/forum/read.php?340,283951,284102#msg-284102 I used a sandpaper and grinded the heatshrink all around the thermistor.
required some time to get it to 2.15mm (fits now in the 2.05mm hole), but its very accurate.]]> new-3d Ormerod Tue, 24 Dec 2013 00:00:48 -0500 https://reprap.org/forum/read.php?340,283951,283951#msg-283951 https://reprap.org/forum/read.php?340,283951,283951#msg-283951 Is it possible the PTFE heatshrink has changed spec in kits? Mine is RS kit number 472.
With the heatshrink on the diameter was 2.39mm, the hole diameter is 2mm. The thermistor is 1.78mm.]]> tim_h Ormerod Mon, 23 Dec 2013 16:39:46 -0500