Prusu Mini+ PTFE tube cutter (with chamfer)
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A tool to cut and chamfer a replacement PTFE hotend tube for the Prusa Mini+.
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Model information
- Source
- Printables
- Category
- Prusa Parts & Upgrades
- License
- Creative Commons — Attribution
PRUSA MINI+ PTFE TUBE CUTTING TOOL WITH CHAMFER
The knowledge base instructions for replacing the hot-end PTFE tube in the Prusa Mini+ calls for a tube with a specific dimension and chamfer.
This tool cuts and chamfers commonly available PTFE tube as per these instructions.
https://help.prusa3d.com/guide/how-to-replace-a-hotend-ptfe-tube-mini-mini_119449
The tool is self contained and stores the blade and removal pick when not in use.
PARTS NEEDED
Print the tool body, two retainer latches and removal pick.
- M6 x 35mm bolt (x1)
- #4 gauge (3mm) x ¼" (6mm) self tapping screw (x2)
- Stanley knife box cutter blade (x1)
- PTFE tube (4mm OD x 2mm ID)
PRINT SETTINGS
No specific material or print settings are needed for this tool.
The example pictured is printed using the following, and takes 2.25 hours:
- Prusament PETG
- 0.15mm Layer height
- 3 Perimeters
- 15 % Grid Infill
HOW TO USE IT
A PDF Instruction is provided showing the 8 steps for cutting and chamfering the PTFE tube.
The tool is used to rotate the PTFE tube against the cutting edge of a blade at the required angle to achieve the 120° chamfer. It also sets the depth of the cut using a depth-stop bolt to set the length to 43.4mm.
 | The PTFE tube is inserted into the tool body and rotated at an angle to the cutting blade to chamfer the edge. |
 | The PTFE tube is cut square and to the required length. |
 | A bolt sets the depth of cut to achieve the final length of the PTFE tube. |