# How to remove PEI

**URL:** <https://forum.lulzbot.com/t/how-to-remove-pei/2505>\
**Category:** LulzBot TAZ\
**Created:** [November 21, 2015, 12:48am UTC](https://forum.lulzbot.com/t/how-to-remove-pei/2505 "2015-11-21T00:48:27Z")\
**Posts on this page:** 6\
**Page:** 1

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**Author:** ![zanthor](https://avatars.discourse-cdn.com/v4/letter/z/e19b73/32.png) [@zanthor](https://forum.lulzbot.com/u/zanthor)\
**Post date:** [November 21, 2015, 12:48am UTC](https://forum.lulzbot.com/t/how-to-remove-pei/2505/1 "2015-11-21T00:48:27Z")

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Step 1… forget glue…  
Step 2… print NinjaFlex SemiFlex…  
Step 3…

 ![12285740_10206809294705241_386961457_n.jpg](https://us1.discourse-cdn.com/flex020/uploads/lulzbot/original/2X/8/8a20ecf19ddd94ac809d6349d87cd4626d3f8e0c.jpeg)  
Step 4… I hit the build plate with alcohol and let it soak, scraped with a razor… repeated… took a few tries to get all the adhesive off but it’s a squeaky clean build plate now.

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**Author:** ![kcchen\_00](https://avatars.discourse-cdn.com/v4/letter/k/9dc877/32.png) [@kcchen\_00](https://forum.lulzbot.com/u/kcchen_00)\
**Post date:** [November 21, 2015, 2:22am UTC](https://forum.lulzbot.com/t/how-to-remove-pei/2505/2 "2015-11-21T02:22:54Z")

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Seems like a waste of filament…?

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**Author:** ![zanthor](https://avatars.discourse-cdn.com/v4/letter/z/e19b73/32.png) [@zanthor](https://forum.lulzbot.com/u/zanthor)\
**Post date:** [November 23, 2015, 6:39pm UTC](https://forum.lulzbot.com/t/how-to-remove-pei/2505/3 "2015-11-23T18:39:13Z")

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You don’t say…

I just started the process of removing the PEI from my 2nd Taz 5, as I only print SemiFlex and my ability to apply glue evenly is apparently questionable. (I missed a spot and popped a dime size hole out of the 2nd print bed removing it.)

I’d strongly suggest anyone doing lots of ninjaflex/semiflex prints to simply buy the glass bed or use blue tape where you can’t miss a spot.

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**Author:** ![i-t-w.com](https://sea2.discourse-cdn.com/flex020/user_avatar/forum.lulzbot.com/i-t-w.com/32/65_2.png) [@i-t-w.com](https://forum.lulzbot.com/u/i-t-w.com)\
**Post date:** [November 23, 2015, 9:52pm UTC](https://forum.lulzbot.com/t/how-to-remove-pei/2505/4 "2015-11-23T21:52:23Z")

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No fun. We use Goo-Gone to remove the PEI adhesive.  
Reheating the bed to 70-90C also helps with ninjaflex/semiflex removal.  
We just did a test over the weekend, wish we could have posted before it happened to you.

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**Author:** ![zanthor](https://avatars.discourse-cdn.com/v4/letter/z/e19b73/32.png) [@zanthor](https://forum.lulzbot.com/u/zanthor)\
**Post date:** [December 1, 2015, 9:28pm UTC](https://forum.lulzbot.com/t/how-to-remove-pei/2505/5 "2015-12-01T21:28:28Z")

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OK, now that the PEI is off, my next question is where can I buy replacement glass? Lulzbot is out-of-stock so an alternative source for the 300mm^2 plate would be appreciated.

I have replacement PEI but I do not want to apply it until I have a surface I don’t have to worry about damaging to print on!

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**Author:** ![zanthor](https://avatars.discourse-cdn.com/v4/letter/z/e19b73/32.png) [@zanthor](https://forum.lulzbot.com/u/zanthor)\
**Post date:** [December 1, 2015, 9:31pm UTC](https://forum.lulzbot.com/t/how-to-remove-pei/2505/6 "2015-12-01T21:31:55Z")

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Nevermind, it’s back in stock… as a side note their **product alerts** aren’t functional.