# Undersized IDs

**URL:** https://forum.lulzbot.com/t/undersized-ids/219
**Category:** Filament
**Created:** [July 23, 2013, 11:35pm UTC](https://forum.lulzbot.com/t/undersized-ids/219 "2013-07-23T23:35:36Z")
**Posts on this page:** 1
**Showing post:** 2

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### Author: ![Orias](https://sea2.discourse-cdn.com/flex020/user_avatar/forum.lulzbot.com/orias/32/3_2.png) [@Orias](https://forum.lulzbot.com/u/Orias)
#### Post date: [July 26, 2013, 2:14pm UTC](https://forum.lulzbot.com/t/undersized-ids/219/2 "2013-07-26T14:14:17Z")

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There’s a couple of guides that can better explain the common trait of holes with undersized IDs:  
[RepRap Wiki](http://reprap.org/wiki/Print_Troubleshooting_Pictorial_Guide#Holes_Undersized) and [Nophead’s Blog](http://hydraraptor.blogspot.com/2011/02/polyholes.html).

Nophead’s blog is great for some in depth FFF thoughts and explanations. I highly recommend giving it a read. Undersized IDs can be caused by: faceting errors, segment pausing, arc shrinkage and corner cutting. It’s broken down at the link.

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