The Resin Pump skirt, also known as the locator base, helps position the pump on the cartridge floor so resin can be dispensed into the resin tank. If the skirt is damaged, the pump may not sit properly on the cartridge floor, leading to a resin spill.

Use this guide to replace the pump skirt on a Form 4 Resin Pumping System pump.

Estimated time: 10–20 minutes, plus time to print and post-process the replacement skirt

Overview: Prepare the resin pump and a dust-free workspace for replacing the pump skirt.

Step 1: Print a replacement pump skirt

Print and post-process a replacement pump skirt. For best results, print this part in Tough 2000 Resin V2. Other resins will also work but the part may not be as impact-resistant.

Step 2: Prepare the workspace

Clear a workspace. Ensure that the workspace is well-ventilated and free of dust.

Step 3: Remove the resin pump from the printer

If the resin pump is currently installed in a printer, remove the resin pump.

To prevent resin from dripping onto your work surface, unscrew the cap from the retention post on the bottom of the pump and screw it onto the outlet of the pump tube.

Step 4: Disconnect the transfer tube

Cut the zip tie securing the transfer tube to the resin pump. Disconnect the transfer tube from the resin pump. Rest the free end of the transfer tube above the resin container to prevent resin from dripping onto your work surface.

Overview: Uninstall the original pump skirt.

Step 1: Remove the resin pump tube clip

The pump tube is held in place with a clip, which is in turn secured to the body of the pump with an 8 mm M3 button head screw. Remove the pump tube from the clip and move it to the side. Using a ball-end 2 mm hex driver, loosen and remove the screw from the clip. Set the screw and clip aside.

Step 2: Unscrew the pump skirt mounting screws

Using a 2 mm hex driver, loosen and remove the four 6 mm M3 flathead screws securing the pump skirt to the body of the pump. Set the screws aside. Pull the pump skirt off of the pump and set it aside for disposal.

Overview: Mount and secure the replacement pump skirt.

Step 3: Mount the pump tube clip

Slide the closed end of the pump tube clip into the matching contoured feature in the pump skirt.

Step 4: Secure the pump tube clip

Thread the 8 mm M3 button head screw into the screw hole in the pump tube clip. Using a ball-end 2 mm hex driver, tighten until snug.

Overview: After installing the new pump skirt, insert the resin pump into a printer and perform final checks.

Step 1: Remove the luer cap from the pump tube

Unscrew the cap from the outlet of the pump tube. Screw the cap onto the retention post on the bottom of the pump for safekeeping.

Step 2: Connect the transfer tube

Press the transfer tube onto the barbed fitting at the top of the resin pump until the end of the tube sits flush against the base of the fitting and secure the transfer tube with a zip tie.

Step 3: Insert the resin pump into the printer

Insert the resin pump into the cartridge slot of your printer. Route the transfer tube so that it does not interfere with the printer cover or any other moving parts.

Step 4: Run a test print

Start a test print. Monitor the printer to ensure that the resin pump dispenses resin properly. Contact Formlabs Support or your authorized reseller to share the results of the procedure.