Prusa Core One Gantry Wiper - Wipe Your Nozzle at ANY Time During a Print

Summary

This is a nozzle wiper for the Prusa CORE One which mounts to the gantry. This allows for wiping the nozzle at any point during a print. The installation is toolless and easily reversable.

This was inspired by the Nozzle Wiper V2 by 6d6178.

See a short video of the wiper in action here:

Caution: This is a printer modification and should be carefully installed and tested to prevent damaging your printer.

Bill Of Materials

• Gantry Wiper 3D Print

• Silicon Nozzle Brush

  • See Nozzle Wiper V2 for buying links and specs

• Masking Tape (Optional)

FAQ

• What type of silicon pad is this designed for?

  • The Bambu Lab A1 silicon nozzle brush

• Is this compatible with Nozzle Wiper V2 G-code generator?

  • Yes, it's fully compatible 

• Why is there no left side mounting version?

  • Partially due to compatibility with the Gantry Primer and partially due to laziness

• Why does the wiper extend past the notch in the build plate?

  • The 6.5.3 firmware modified the filament change nozzle position to be right over the Wiper arm. When changing filament this causes issues as the purged filament would get stuck to the arm! To fix this I extended the arm so the nozzle doesn't interfere.

• Does this work with the Core One L?

  • I have no idea. Print one and let me know!

• Will this work with Indxx?

  • Probably not. Indxx extends into the extra space the Wiper uses

• What is Masking Tape used for in this build?

  • This is used for the Gantry Primer to prevent sticking of primer/purge filament to the Wiper. It's not needed if you don't use the Gantry Primer

Printing Settings

0.2mm Structural with Supports will work fine

Orientation

To prevent separation of layer lines during usage, the model must be placed with the door facing side (hooks for the gantry rails) on the print bed. Printing in the upright position can cause the layer lines to split due to the downward force the nozzle has on the Wiper. See the 3mf file for reference on the correct orientation.

Materials

PLA was used for the existing versions I've printed but it will likely warp if you print with higher temperature filaments. So far it has worked fine for PLA only printing. If you print higher temperature filaments you probably want to use PC Blend CF, PC, ASA, ABS, etc. which will warp less.

Settings

• Layer Height - 0.2mm

• Nozzle Size - 0.4mm

• Perimeters - 2

• Infill - 10% Gyroid

• Brim - None

• Supports - Required, Rectilinear preferred

Assembly

Two main steps with an optional third step if using the Gantry Primer

Remove Supports

Remove the supports under the mount location for the silicon nozzle brush. Also remove the supports in the cutout at the 90 degree corner bend. This cutout prevents the build plate screws from interfering with the Gantry Wiper when the Z position is set to zero.

Attach Silicon Pad

Remove the adhesive cover on the silicon nozzle brush. Align the nozzle brush so that one edge is just over the end of the indentation edge, not sticking to the Wiper 3D Print. This is done on purpose for use with the Gantry Primer as it prevents filament from sticking to the Wiper. If the adhesive on the silicon brush does not work, look at the recommendations in the Nozzle Wiper V2

Attach Masking Tape (Optional)

Skip this step if you don't use the Gantry Primer. 

Cut out a 10mm x 13mm piece of masking tape or equivalent tape. Stick this on the angled edge just under the silicon nozzle brush. The 10mm wide side will be against the silicon nozzle wiper. The tape will prevent primer filament from the Gantry Primer from sticking to the Gantry Wiper.

Installation

The installation is toolless, is easily reversible, and should not require any force. Move the print head to the back of the printer to allow for access to the front right belt tensioner block.

Hook the Wiper Arm

Wrap the rounded hook of the Gantry Wiper under the guide rail of the gantry. The tab above the rounded hook should be under the sheet metal of the enclosure. The rectangular hook should be over the belts.

Slide on Wiper Arm

Push the Wiper towards the right side belt tensioner block. The rectangular hook of the Gantry Wiper should slide onto the belt tensioner block and fit snuggly. Continue to push on the Wiper until it makes contact with the right side guide rail and upper Z axis mount.

Verify Flatness

Push on the Wiper around the 90 degree bend to make sure that it is laying flat against the right side guide rail and upper Z axis mount. This flatness ensures the the wiper will be parallel to the build plate. Mounting at an angle may catch on the build plate when it is raised.

Verify Print Bed Clearance

Slowly raise the build plate to make sure the Gantry Wiper does not catch on it. There should be a 1-2mm gap between the Gantry Wiper and the build plate. After, home all axis to make sure that the gantry X and Y Axis does not interfere with the Gantry Wiper.

G-Code

The Nozzle Wiper V2 G-code generator is compatible with the Gantry Wiper. If you were using 6d6178's build plate version, you will likely need to change the zero reference as detailed below. Follow the directions in the G-code generator to copy the G-code.

Default G-Code Wiping Position

The default silicon nozzle wiper back right bristle position is X = 188.00, Y = -12.00 for the Prusa Core One. Depending on your print quality, material and warping, you may want to measure your own default position. Note that the Z position does not matter as the Gantry Mount prevents any change in the Nozzle Z axis when wiping.

Position Measurement Process

Since we cannot change the Z axis position when wiping, we must measure the X and Y axis positions independently. 

IMPORTANT: Home all axis before taking the X and Y axis positions.

X Position

Manually change the X and Y axis positions. Align the nozzle behind the far right and far back silicon nozzle brush bristle as shown in the picture below. Take note of the X axis value as this is our zero position for the X axis.

Y Position

Manually change the X and Y axis positions. Align the nozzle to the right of the far right and far back silicon nozzle brush bristle as shown in the picture below. Take note of the Y axis value as this is our zero position for the Y axis.

Expected Usage

It is expected that the Gantry Wiper will clean the nozzle by pulling off debris stuck to the nozzle. Debris may remain in the silicon brush or may fall into the machine or build plate.

Appropriate Movement

It is expected that the Gantry Wiper will flex in the Z+, Z-, Y+, and Y- axis when wiping due to the nozzle moving the Wiper around. The Gantry Wiper should not flex much if at all in the X+ or X- axis. The Gantry Wiper should never shift positions from its mount if mounted correctly.

Safety

This is a printer modification and should be carefully tested before being used. The printing nozzle should not be able make contact with any part of the Gantry Wiper arm other than the silicon brush. The print bed should not make any contact with the Gantry Wiper.

Gantry Primer Usage

The Gantry Wiper is required to work in conjunction with the Gantry Primer. The Gantry Wiper helps to remove the primer/purge waste from the Gantry Primer by pinching off the excess. Please see the Gantry Primer for more details on its usage.

Remixing

The Fusion360 (f3d) file is provided for those who want to make modifications. It's not my cleanest model and is not fully parameterized so be cautious about the relative distance between features if you change the model.

Updates

04-11-2026

• Added STEP files

04-09-2026

• Initial Version Uploaded