# Alternative Grey Pro supplier?

**URL:** <https://forum.formlabs.com/t/alternative-grey-pro-supplier/31878>\
**Category:** Materials\
**Created:** [September 3, 2021, 9:37pm UTC](https://forum.formlabs.com/t/alternative-grey-pro-supplier/31878 "2021-09-03T21:37:42Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![SMMW](https://avatars.discourse-cdn.com/v4/letter/s/48db29/32.png) [@SMMW](https://forum.formlabs.com/u/SMMW)\
**Post date:** [September 3, 2021, 9:37pm UTC](https://forum.formlabs.com/t/alternative-grey-pro-supplier/31878/1 "2021-09-03T21:37:43Z")

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The last postings re: ApplyLabWork alternative resins was 2018. I see they have a “Prototype Robust Engineering” resin called “Champagne” that has similar properties to Grey Pro. Anyone tried this in a Form3? If yes, what PreForm resin do you use (Grey 3 or 4 or something else)?

Can ALW’s resin be printed in 25 micron layers? I have many small diameter parts that could benefit from this but GreyPro only allows 50 and 100.

ALW’s web site also has instructions re: using FL’s cartridges which answered one of my questions before I asked it!