# Hole size to print for heat set inserts

**URL:** <https://forum.lulzbot.com/t/hole-size-to-print-for-heat-set-inserts/2962>\
**Category:** Software\
**Created:** [February 16, 2016, 2:22pm UTC](https://forum.lulzbot.com/t/hole-size-to-print-for-heat-set-inserts/2962 "2016-02-16T14:22:13Z")\
**Posts on this page:** 5\
**Page:** 1

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**Author:** ![cruncher](https://avatars.discourse-cdn.com/v4/letter/c/b5a626/32.png) [@cruncher](https://forum.lulzbot.com/u/cruncher)\
**Post date:** [February 16, 2016, 2:22pm UTC](https://forum.lulzbot.com/t/hole-size-to-print-for-heat-set-inserts/2962/1 "2016-02-16T14:22:13Z")

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Are there any guidelines on how large a hole to print to receive a heat set insert? I searched the forums but the words were deemed too common and ignored ☹

thanks!

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**Author:** ![nopick](https://avatars.discourse-cdn.com/v4/letter/n/7bcc69/32.png) [@nopick](https://forum.lulzbot.com/u/nopick)\
**Post date:** [February 16, 2016, 2:44pm UTC](https://forum.lulzbot.com/t/hole-size-to-print-for-heat-set-inserts/2962/2 "2016-02-16T14:44:07Z")

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You can find the hole sizes for heat sets on McMaster Carr’s website.

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**Author:** ![piercet](https://sea2.discourse-cdn.com/flex020/user_avatar/forum.lulzbot.com/piercet/32/12_2.png) [@piercet](https://forum.lulzbot.com/u/piercet)\
**Post date:** [February 16, 2016, 7:55pm UTC](https://forum.lulzbot.com/t/hole-size-to-print-for-heat-set-inserts/2962/3 "2016-02-16T19:55:50Z")

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This is from memory, but I use a 5.2mm hole with a 4mm depth for a standard M3 heat set insert, and a 7.3mm hole with a 5mm depth for an M5 I think. The longer M3 and M5 ones require a narrower hole with more depth.

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**Author:** ![nopick](https://avatars.discourse-cdn.com/v4/letter/n/7bcc69/32.png) [@nopick](https://forum.lulzbot.com/u/nopick)\
**Post date:** [February 16, 2016, 9:11pm UTC](https://forum.lulzbot.com/t/hole-size-to-print-for-heat-set-inserts/2962/4 "2016-02-16T21:11:40Z")

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Here is a link.

[http://www.mcmaster.com/#heat-inserts/=115jsq9](http://www.mcmaster.com/#heat-inserts/=115jsq9)

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**Author:** ![cruncher](https://avatars.discourse-cdn.com/v4/letter/c/b5a626/32.png) [@cruncher](https://forum.lulzbot.com/u/cruncher)\
**Post date:** [February 17, 2016, 12:26am UTC](https://forum.lulzbot.com/t/hole-size-to-print-for-heat-set-inserts/2962/5 "2016-02-17T00:26:52Z")

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Got it - thank you both very much!