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SOLID MODELRobotic Arms & Automation7-Apr-2026

Multicolor AutoPen Gripper - Robotic Pen Changer & Drawer

JohnCorreia
JohnCorreia
3 Files
stl Format

Description

AutoPen Gripper - Robotic Pen Changer & Drawer for MGN12 linier rail block.

What is this? This is a pen plotter / autopen, pen holder that can grab different pens while doing the same drawing.

Features: pen detection / pen changing functionality.

How? : It uses a servo to hold the pen. And another servo that makes the pen go up and down so it can draw on your CNC machine.

Requirements: A CNC frame that has a MGN12 mounting block on the Y linier rail trolly.

janky Instructions : Print at 100% infill , assemble.

GCODE file is for bambu lab carbon x1c machine. with dual colors.

janky Parts list:

Mgn12 linier rail.

2x, 5mm Rods 100mm long

2x, 5mm id , 10mm long bearings size for liner rail.

2x 5mm id 5mm length bearings for Z push arm.

M2 screws.

2x 5mm dia , 25mm long metal dowel stainless.

2x 20kg metal servos.

2x springs with a 5mm id.

1x ender3 type mechanical end stop switch for pen detection.

Downloads

Gripper_Mount.stl
1.3 MB
Y_MGN12C_and_Servo_Z_Mount.stl
1.7 MB
Z_Push_Arm.stl
106.8 KB