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How to trim PTFE tube - Original Prusa printers

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How to trim PTFE tube - Original Prusa printers

How to trim PTFE tube - Original Prusa printers
Last updated 2 years ago
How to trim PTFE tube - Original Prusa printers
 Difficulty
Moderate
 Steps
11
 Available languages
CSDEESFRITJAPL

Step 1 Introduction

Introduction
Introduction
This guide is dedicated to the PTFE trimming for Original Prusa printers, supported models are listed later on.
For Multi Material PTFE trimming guide, go to: How to trim PTFE tube - Multi Material
Read all these instructions before proceeding with the actual trimming and drilling! First few steps explain necessary tools, exact dimensions are given later.
Where to get the PTFE tubes?
Trimmed and drilled tubes are available as spare parts at our eshop (shop.prusa3d.com), in case any tube is missing, please contact our support via the live-chat window.
Alternatively, you can purchase the PTFE tubes from other suppliers. Make sure the PTFE tube has the desired dimensions (diameter), the lowest possible tolerances and also the hole is properly centred.
Regarding the brands, we have very good experience with FESTO. You can also get PTFE tubes from E3D.

Step 2 Proper cutting and trimming tools

Proper cutting and trimming tools
Proper cutting and trimming tools
Proper cutting and trimming tools
ATTENTION!!! Please read all instructions at least twice! If you trim or drill the tube improperly, you will have to order it again!
READ CAREFULLY instructions for the tools before you proceed further. Prusa Research is not responsible for any harm or injury.
For trimming get a cutting tool with a thin blade. Use either razor or carpet knife. DON'T use kitchen knife.
For drilling is recommended to use a drill bit with conic head or you can use a drill bit with diameter 3,5 - 4 mm. The point is to make a conical entrance in the tube.

Step 3 Trimming the PTFE tube

Trimming the PTFE tube
Trimming the PTFE tube
Take the razor or knife and carefully trim the tube.
Don't press too hard during the cutting on the tube, you can deform the circular shape and this will lead to filament jam!

Step 4 Drilling the tube's edge

Drilling the tube's edge
Drilling the tube's edge
Drilling the tube's edge
After cutting the tube to the appropriate length, you need to create the conical entrance.
Use the drill bit you've prepared in the beginning. You can use an electric drill, but set it to low RPM and press very gently.
For the other end, it is possible to use a pencil sharpener.
It is important to achieve smooth entrance, so the filament will slide in. Clean the tube from any particles, which might prevent it.

Step 7 PTFE for the MK3S+

PTFE for the MK3S+
PTFE for the MK3S+
This an ideal shape of the PTFE tube for Original Prusa i3 printer. Given dimensions and angles are recommended values.
HOTEND PTFE
All dimensions are in millimetres.

Step 8 PTFE for the MINI/MINI+ (part1)

PTFE for the MINI/MINI+ (part1)
PTFE for the MINI/MINI+ (part1)
PTFE for the MINI/MINI+ (part1)
PTFE for the MINI/MINI+ (part1)
This an ideal shape of the PTFE tube for Original Prusa MINI printer. Given dimensions and angles are recommended values.
HOTEND PTFE
EXTRUDER PTFE
INPUT PTFE
See the next step for the other PTFE tubes for the MINI printer.
All dimensions are in millimetres.

Step 9 PTFE for the MINI/MINI+ (part 2)

PTFE for the MINI/MINI+ (part 2)
PTFE for the MINI/MINI+ (part 2)
This an ideal shape of the PTFE tube for Original Prusa MINI printer. Given dimensions and angles are recommended values.
BOWDEN PTFE
All dimensions are in millimetres.

Step 10 PTFE for the MK3S/MK2.5S

PTFE for the MK3S/MK2.5S
PTFE for the MK3S/MK2.5S
This an ideal shape of the PTFE tube for Original Prusa i3 printer. Given dimensions and angles are recommended values.
HOTEND PTFE
All dimensions are in millimetres.

Step 11 OBSOLETE: PTFE for the MK3/MK2.5/MK2S/MK2

OBSOLETE: PTFE for the MK3/MK2.5/MK2S/MK2
OBSOLETE: PTFE for the MK3/MK2.5/MK2S/MK2
OBSOLETE: PTFE for the MK3/MK2.5/MK2S/MK2
This an ideal shape of the PTFE tube for Original Prusa i3 printer. Given dimensions and angles are recommended values.
HOTEND PTFE
EXTRUDER PTFE (MK3/MK2.5 only)
All dimensions are in millimetres.
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