Formlabs generally recommends the use of isopropyl alcohol (IPA) with a
concentration of 90% or higher to clean and dissolve uncured resin from
stereolithography (SLA) 3D printed parts. If you cannot use IPA, tripropylene
glycol monomethyl ether (TPM) is a tested alternative for parts printed with
non-biocompatible Formlabs resins.
TPM is a non-flammable liquid* solvent
that can be readily acquired and stored
in accordance with your organization’s
health and safety regulations.
TPM has a mild odor, making it suitable
for workplaces where employees are
sensitive to the smell of IPA.
TPM evaporates slowly at room
temperature. If you experience a
significant amount of IPA evaporation
between prints, TPM may offer a
more economical finishing solution
WASHES MORE PARTS
As your wash solvent dissolves liquid
resin, the concentration of resin in the
solvent increases. TPM continues to
clean printed parts effectively at higher
resin concentrations, washing up to three
times as many parts as IPA before the
solvent needs to be replaced.
The TPM finishing workflow is similar to the
workflow with IPA.
• TPM is compatible with the Formlabs Finish
Kit, Form Wash, and Form Cure.
• Unlike IPA, parts cleaned with TPM will not
air dry, as TPM evaporates very slowly. To
remove TPM from your parts, rinse them in
TPM may leave a waxy surface texture on
some resins. Post-curing eliminates this.
• TPM is not yet certified for use with Formlabs
* This product is not labeled as dangerous according to
Regulation (EC) No. 1272/2008.