# Lulzbot Hex hotend, what thermister?

**URL:** <https://forum.lulzbot.com/t/lulzbot-hex-hotend-what-thermister/2004>\
**Category:** Hardware\
**Created:** [July 15, 2015, 10:29pm UTC](https://forum.lulzbot.com/t/lulzbot-hex-hotend-what-thermister/2004 "2015-07-15T22:29:51Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![tmorris9](https://avatars.discourse-cdn.com/v4/letter/t/b5e925/32.png) [@tmorris9](https://forum.lulzbot.com/u/tmorris9)\
**Post date:** [July 15, 2015, 10:29pm UTC](https://forum.lulzbot.com/t/lulzbot-hex-hotend-what-thermister/2004/1 "2015-07-15T22:29:51Z")

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I am making my own second hex hotend (modified Flexy) and I want to make sure I have the same thermister that came with the hotend from Lulzbot.

My new hotend came with 100k type 1, is this the same as the one from Lulzbot? (I don’t want to mess with settings every time I swap them out).

Thanks

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**Author:** ![ray](https://avatars.discourse-cdn.com/v4/letter/r/e9a140/32.png) [@ray](https://forum.lulzbot.com/u/ray)\
**Post date:** [July 20, 2015, 7:16pm UTC](https://forum.lulzbot.com/t/lulzbot-hex-hotend-what-thermister/2004/2 "2015-07-20T19:16:04Z")

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Hi tmorris9, if I recall correctly, we are using the 100k Semitec thermistor on the Hexagon’s. This is what the current firmware shows:

// 5 is 100K thermistor - ATC Semitec 104GT-2 (Used in ParCan & J-Head) (4.7k pullup)