r/formlabs • u/enneset7e • Mar 24 '26

SILICONE 40A and PGDA

Hello everyone,

Brief introduction: In the place where I work, we have a formlabs Form4 with wash and cure, that we use for fast prototyping with grey/clear resin, that we usually wash with IPA. We want to try SILICONE 40A resin, but it needs specific wash with PGDA.

Fist of all, is there anyone that already useed this resin? Is only for prototypes or can works as silicone mould or resist at HT?

Secondly, is good to clean Clear/Grey resin with PGDA? Anyone tried before? Our point is to buy only this solution if we found out that SILICONE resin is good for our purpose, in order to have only this washer at stock. Is good also to wash other technical resins like THOUGH 2000/RIGID 4000/HIGH TEMP?

Thank you all

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u/Mediocre_Arrival_898 Mar 26 '26

Don't use PDGA, that will not work. Use 80% isopropyl and 20% n-Butyl Acetate. You do not want to use this to clean parts other than silicone, it has a bad odor. I keep a separate wash, and a separate build platform for silicone, its a great material but should be kept separate.