WHITE PAPER

Form Wash/Form Wash L time settings

The Form Wash/Form Wash L removes uncured resin from the surface of printed parts by simultaneously soaking and moving them in a solvent. The Form Wash/Form Wash L can be used with isopropyl alcohol (IPA), Formlabs Resin Washing Solution, or tripropylene glycol monomethyl ether (TPM).

Notice:

Always consult the safety data sheet (SDS) from your solvent supplier as the primary source of information for storage and handling.

The table below indicates the recommended times to wash parts printed in Formlabs resins using the Form Wash/Form Wash L. Formlabs updates wash settings periodically with new and improved materials. Download the latest PDF version (English only) and check for updated wash settings when using a new resin or revised formulation.

Note:

When using TPM, wash your printed parts as you would with IPA. Use longer wash times if necessary—some resins will not absorb TPM or swell as much with exposure to the solvent. Refer to the support article Washing prints with TPM for more information about the TPM wash process and the effect of TPM on resins.

Resin	Wash time	Notes
Alumina 4N Resin	2 minutes	Only wash Alumina 4N Resin in the Ceramic Wash Solution. Do not allow Alumina 4N Resin parts to come into contact with water or IPA, as this will cause cracking. Use a separate wash bucket to prevent loose ceramic particles from adhering to non-Alumina parts. Formlabs does not recommend using Resin Washing Solution to wash parts printed in this resin.
BEGO™ VarseoSmileⓇ TriniQⓇ Resin*	To ensure that finished parts are biocompatible, follow all part washing notes in the Instructions for Use. Enter the item number (REF) from the resin cartridge label to access the IFU. Maintain separate wash buckets for resins for biocompatible applications.
BioMed Amber Resin*	To ensure that finished parts are biocompatible, follow all part washing notes in the Manufacturing Guide. Maintain separate wash buckets for resins for biocompatible applications.
BioMed Black Resin*	To ensure that finished parts are biocompatible, follow all part washing notes in the Manufacturing Guide. Maintain separate wash buckets for resins for biocompatible applications.
BioMed Clear Resin*	To ensure that finished parts are biocompatible, follow all part washing notes in the Manufacturing Guide. Maintain separate wash buckets for resins for biocompatible applications.
BioMed Durable Resin V1* BioMed Durable Resin V1.1*	To ensure that finished parts are biocompatible, follow all part washing notes in the Manufacturing Guide. Maintain separate wash buckets for resins for biocompatible applications.
BioMed Elastic 50A Resin*	To ensure that finished parts are biocompatible, follow all part washing notes in the Manufacturing Guide. Maintain separate wash buckets for resins for biocompatible applications.
BioMed Flexible 80A Resin*	To ensure that finished parts are biocompatible, follow all part washing notes in the Manufacturing Guide. Maintain separate wash buckets for resins for biocompatible applications.
BioMed White Resin*	To ensure that finished parts are biocompatible, follow all part washing notes in the Manufacturing Guide. Maintain separate wash buckets for resins for biocompatible applications.
Black Resin V4/V4.1 Clear Resin V4/V4.1 Color Kit Grey Resin V4/V4.1 White Resin V4/V4.1	10 minutes	When using a single wash bucket, residue from previously washed parts deposits on part surfaces. If washing darker-colored materials like Black Resin in the same wash bucket as lighter-colored materials like White Resin or Clear Resin, some color transfer may occur.
Black Resin V5 Clear Resin V5 Color Resin V5 Grey Resin V5 White Resin V5	5 minutes
Castable Resin	10 minutes	Wash Castable parts for the shortest time necessary to remove liquid resin. Ensure that all solvent has evaporated or been removed from the parts before curing and casting.
Castable Wax Resin Castable Wax 40 Resin	10 minutes	Wash for 5 minutes, then remove parts and rinse in fresh solvent. Wash Castable Wax and Castable Wax 40 parts for the shortest time necessary to remove liquid resin. Ensure that all solvent has evaporated or been removed from the parts before curing and casting. Use compressed air to remove solvent completely from any internal channels and hollows. Formlabs does not recommend using Resin Washing Solution to wash parts printed in this resin.
Ceramic Resin	5 minutes	Use a separate wash bucket to prevent loose ceramic particles from adhering to non-Ceramic parts.
Clear Cast Resin	10 minutes	When washed in TPM, standard resins remain waxy when printed with a layer thickness of 50 microns or 100 microns. Post-curing removes waxiness. Without post-curing, waxiness goes away after about a week.
Custom Tray Resin*	To ensure that finished parts are biocompatible, follow all part washing notes in the Manufacturing Guide. Maintain separate wash buckets for resins for biocompatible applications.
Dental LT Clear Resin*	To ensure that finished parts are biocompatible, follow all part washing notes in the Manufacturing Guide. Maintain separate wash buckets for resins for biocompatible applications.
Dental LT Comfort Resin V1 Dental LT Comfort Resin V1.1	To ensure that finished parts are biocompatible, follow all part washing notes in the Manufacturing Guide. Maintain separate wash buckets for resins for biocompatible applications.
Denture Base Resin V1*	To ensure that finished parts are biocompatible, follow all part washing notes in the Instructions for Use. Maintain separate wash buckets for resins for biocompatible applications.
Denture Base Resin V2*	To ensure that finished parts are biocompatible, follow all part washing notes in the Manufacturing Guide. Maintain separate wash buckets for resins for biocompatible applications.
Denture Teeth Resin*	To ensure that finished parts are biocompatible, follow all part washing notes in the Instructions for Use. Maintain separate wash buckets for resins for biocompatible applications.
Draft Resin	10 minutes	Tackiness has been observed on part surfaces when washed in IPA with more than 5% resin concentration. Use fresh solvent if your parts remain tacky after washing. Avoid washing Draft for longer than the recommended time.
Durable Resin V2 Durable Resin V2.1	20 minutes	Tackiness has been observed on part surfaces when washed in IPA with more than 10% resin concentration. Use fresh solvent if your parts remain tacky after washing. Do not leave Durable Resin in solvent for longer than 20 minutes total, as excessive solvent exposure affects the quality of the final part.
ESD Resin	20 minutes	Use a separate wash bucket to prevent ESD Resin from transferring to other parts.
Elastic 50A Resin V1	10 minutes + 10 minutes**	Wash Elastic 50A Resin for 10 minutes on the build platform. Remove parts from the build platform, then wash for 10 more minutes using fresh solvent. Avoid washing Elastic 50A Resin for longer than 20 minutes, as this may degrade parts. Formlabs does not recommend using Resin Washing Solution to wash parts printed in this resin.
Elastic 50A Resin V2	20 min	Wash parts for 20 minutes or until clean. Formlabs does not recommend using Resin Washing Solution to wash parts printed in this resin.
Fast Model Resin	5 minutes
Flame Retardant Resin	10 min (IPA) 15 min (TPM)	Small negative features may be difficult to fully clean due to the resin’s high viscosity. Make sure to clean your parts thoroughly before post-curing. Consider using pressurized air for better cleaning. Formlabs does not recommend using Resin Washing Solution to wash parts printed in this resin.
Flexible 80A Resin V1 Flexible 80A Resin V1.1 Soft Tissue Resin	10 minutes + 10 minutes**	Wash parts printed in Flexible 80A Resin in two cycles, preferably using fresh solvent for the second wash. When washed in TPM, Flexible 80A Resin remains waxy when printed at any layer thickness. and requires post-cure. Post-curing removes the waxiness. Formlabs does not recommend using Resin Washing Solution to wash parts printed in this resin.
Grey Pro Resin	15 minutes	Start with a 15 minute wash and modify the wash time based on your part geometry and solvent purity. There are no special wash instructions for Grey Pro Resin.
High Temp Resin	5 minutes	Do not leave High Temp Resin in solvent for longer than 6 minutes total, as excessive solvent exposure affects the quality of the final part.
IBT Flex Resin*	To ensure that finished parts are biocompatible, follow all part washing notes in the Manufacturing Guide. Maintain separate wash buckets for resins for biocompatible applications.
IBT Resin*	To ensure that finished parts are biocompatible, follow all part washing notes in the Manufacturing Guide. Maintain separate wash buckets for resins for biocompatible applications.
Model Resin	10 minutes	When using a single wash bucket, residue from previously washed parts deposits on part surfaces. If washing darker-colored materials like Black Resin in the same wash bucket as lighter-colored materials like White Resin or Clear Resin, some color transfer may occur.
Permanent Crown Resin*	To ensure that finished parts are biocompatible, follow all part washing notes in the Instructions for Use [EN] [EU]. Maintain separate wash buckets for resins for biocompatible applications. Do not leave Permanent Crown Resin in IPA for longer than 3 minutes total, as excessive solvent exposure affects the quality of the final part. Use an IPA-filled squeeze bottle to remove any remaining resin on the printed parts and in between supports and rafts. An IPA-soaked brush may help with resin removal.
Precision Model Resin	5 minutes
Premium Teeth Resin*	To ensure that finished parts are biocompatible, follow all part washing notes in the Manufacturing Guide. Maintain separate wash buckets for resins for biocompatible applications.
PU Rigid 650 Resin PU Rigid 1000 Resin	2 minutes	Wash parts printed with polyurethane resins in Propylene glycol diacetate (PGDA). Polyurethane resins should not be washed with isopropyl alcohol (IPA), which can react with the printed parts and cause degradation in material properties. Parts can be dipped in an n-Butyl acetate bath for no more than 15 seconds to speed up the evaporation of PGDA. Formlabs does not recommend using Resin Washing Solution to wash parts printed in this resin.
Rigid 4000 Resin	15 minutes	Rigid 4000 Resin contains glass particles, which strengthens printed parts. Maintain separate wash buckets to prevent glass particles adhering to parts printed with other resins.
Rigid 10K Resin V1 Rigid 10K Resin V1.1	10 minutes + 10 minutes**	Rigid 10K Resin contains glass particles, which strengthens printed parts. Maintain separate wash buckets to prevent glass particles adhering to parts printed with other resins.
Silicone 40A Resin	20 minutes	Follow the instructions in the Silicone 40A Resin IPA sonication wash guide for best results with washing parts printed in Silicone 40A Resin. Alternatively, wash parts printed with Silicone 40A Resin in an 80/20 mixture of isopropyl alcohol (IPA) and n-butyl acetate. Do not wash with IPA alone unless following the instructions in the Silicone 40A Resin IPA sonication wash guide. Only use Formlabs-approved solvents with the Form Wash. Only use n-Butyl Acetate/IPA mixture in an unused Form Wash bucket that has not been exposed to other solvents. Once a Form Wash bucket has been used with n-Butyl Acetate, do not switch to pure IPA. Doing so risks compromising the integrity of the bucket plastic. If you notice cracking or crazing on your Form Wash bucket, discontinue use immediately, empty of solvent, and contact Formlabs. Formlabs does not recommend using Resin Washing Solution to wash parts printed in this resin.
Surgical Guide Resin*	To ensure that finished parts are biocompatible, follow all part washing notes in the Manufacturing Guide. Maintain separate wash buckets for resins for biocompatible applications.
Temporary CB Resin*	To ensure that finished parts are biocompatible, follow all part washing notes in the Instructions for Use. Maintain separate wash buckets for resins for biocompatible applications. Do not leave Temporary CB Resin in IPA for longer than 3 minutes, as excessive solvent exposure affects the quality of the final part. Use an IPA-filled squeeze bottle to remove any remaining resin on the printed parts and in between supports and rafts. An IPA-soaked brush may help with uncured resin removal.
Tough 1000 Resin	10 minutes + 10 minutes**	Wash parts printed in Tough 1000 Resin in two cycles, preferably using fresh solvent for the second wash. For best surface finish, Formlabs recommends allowing parts printed in Tough 1000 Resin to air dry for at least 30 minutes prior to handling or post-curing. You can also use compressed air to speed up the drying process. Formlabs does not recommend using Resin Washing Solution to wash parts printed in this resin.
Tough 1500 Resin V1* Tough 1500 Resin V1.1*	10 minutes + 10 minutes**	Wash parts printed in Tough 1500 Resin in two cycles, preferably using fresh solvent for the second wash. Note: If parts printed with Tough 1500 Resin will be used for skin contact use, parts must be washed with ≥99% IPA in a Form Wash/Form Wash L for 20 minutes. Ambient conditions and part design (for example, thicker walls or areas that can lead to IPA pooling) may require longer dry times prior to post-curing.
Tough 1500 Resin V2*	10 minutes	Formlabs does not recommend using Resin Washing Solution to wash parts printed in this resin.
Tough 2000 Resin V1 Tough 2000 Resin V1.1 Tough Resin V5	10 minutes + 10 minutes**	Part surfaces may become tacky if washed in IPA with more than 5% resin concentration. Use fresh solvent if your parts remain tacky after washing.
Tough 2000 Resin V2	15 minutes	For best surface finish, Formlabs recommends allowing parts printed in Tough 2000 Resin V2 to air dry for at least 10 minutes prior to handling or post-curing. You can also use compressed air to speed up the drying process. Formlabs does not recommend using Resin Washing Solution to wash parts printed in this resin.
True Cast Resin V1	5 minutes	Wash with IPA or ≥91% ethyl alcohol, then spray with fresh solvent after the wash cycle. Dry with compressed air.

* Wash in IPA with a concentration of 99% or higher to comply with biocompatibility regulations. Maintain separate wash buckets to meet biocompatibility requirements.

** Parts with two wash times require two wash cycles. For the second wash cycle, use clean solvent. The first wash cycle removes the bulk of the resin, while the second cycle fully cleans the parts.

Changing the recommended wash time

You may need to increase the recommended wash time when:

Tip:

Observe these best practices for washing prints to achieve the cleanest parts.

Recycling or disposing of used solvent

Refer to the support articles Isopropyl alcohol (IPA), Formlabs Resin Washing Solution, and Tripropylene glycol monomethyl ether (TPM) for more information about safe disposal of used solvent.

Notice:

Do not pour liquid or partially cured resin into drains or dispose of it with household waste. Do not pour solvent that contains dissolved resin into drains or dispose of it with household waste. Safe and appropriate disposal methods of used solvent vary by location.