Formlabs Form 4B - Tasks before Switching Resin Types; Periodic Maintenance

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6.3.1 Cleaning the build platform
The build platform is the aluminum base that provides a surface for prints to attach to. Over time,
the build platform develops scratches from part removal, which can assist with print adherence.
Avoid exposing a resin-covered build platform to light directly after a print completes. Liquid
resin cures in ambient light, and resin left on the surface of a build platform renders it unusable.
Required supplies
Isopropyl alcohol
Low-fiber paper towels
Non-reactive nitrile gloves
When switching to a dierent resin type between prints or storing the build platform for future
use, clean the surface and edges of the build platform with isopropyl alcohol and low-fiber
paper towels. If you are starting a new print immediately using the same resin type, there is
no need to remove liquid resin.
6.3.2 Inspecting the bite valve
Thebite valveis located on the underside of each resin cartridge. This flexible seal regulates
resin dispensing. Resin flows out of the opening in the center of the bite valve when the
cartridge dispense armsqueezes the bite valve open. When switching to a dierent resin
cartridge, inspect the bite valve for any cured resin or damage.
6.3.3 Inspecting the resin tank interior
Refer to section 6.7.1 Inspecting the resin tank.
6.4 Tasks before switching resin types
Perform the following maintenance tasks whenever you switch resin types. For detailed
guidance and visual assistance, visit support.formlabs.com.
6.4.1 Cleaning the mixer
The mixer improves print consistency by clearing the build area and circulating the resin.
If you are running multiple prints with the same resin type, you do not need to clean the
mixer between prints. If you are switching resin types, clean the mixer between uses to
prevent contamination.
To clean the mixer:
1. Unlatch and remove the mixer from the printer.
2. Clean the mixer with a solvent such as IPA or TPM. Either:
°
Wipe the mixer with a clean paper towel wetted with solvent.
°
Clean the mixer with the Form Wash, Form Wash L, or other automated cleaning unit.
3. Allow the mixer to dry fully before reinserting it into the printer. If you cleaned the mixer
with a solvent that does not readily evaporate, such as TPM, you may need to manually
dry the mixer.
If the mixer is visibly damaged, is leaving debris in the resin tank, or is causing the resin in the
resin tank to become discolored, replace the mixer.
6.5 Periodic maintenance
Perform the following maintenance tasks periodically or as needed. For detailed guidance
and visual assistance, visit support.formlabs.com.