Snap-together PTFE tube cutter that’s precise, safe, and seriously satisfying
Please know the The Bowden Puck Pro is available by clicking here! It improves alignment, grip, and versatility in a way you’ll notice immediately.
Want a keepsake tool so satisfying that you’ll proudly show it off to your geeky 3D-printing friends? So beautiful you won’t want to shove it in a drawer? So unique you’ll consider passing it (and your love for plastic) on to the next generation?
Oh, and did I mention it’s also an insanely good PTFE tube cutter? Like a hot knife through butter—effortlessly slicing 4mm tubes with wicked precision.
Also, no screws, no fuss, just a satisfying snap-fit assembly. However, if you plan to cut a lot of PTFE tubes, you might want to see the magnetized version. Also, if you're invested in Gridfinity, @Wolverine99 was kind enough to create a neat little bin to hold this puck. Thank you @Wolverine99!
(On a side note, if you have an A1, have you ever been hit by its moving bed? Or just need a tidy spot for your A1's tools? If so, check out my A1 Front Drawer!)
Features You'll Love:
- Ultra-safe – The blade stays protected, keeping fingers out of harm’s way.
- Ultra-grippy – Custom-designed knurling for a firm, satisfying hold.
- Tool-free assembly – Snaps together—no screws needed!
- Aesthetic & functional – Looks so good, you’ll actually want to leave it out.
- Uses common DE razor blades – No special refills required.
Important Notes:
- Precision matters – Tight tolerances mean your printer needs to be dialed in before printing.
- Designed for 4mm tubes only – Specifically optimized for Bambu's tubing. Larger tubes tend not to have enough structural support for a double edge razor blade.
Assembly Instructions
- Print both halves – I found that printing by object is a little faster than by layer. If you're aiming for a two-tone masterpiece, this method also saves filament and lets you fully flex the AMS.
- Insert a blade (carefully) – Use a NEW double-edge razor blade and slide it into the holder. DO NOT BEND IT. Make sure it's fully seated around the middle and sides before moving to the next step.
- Snap it together – Place the guide on the holder and press them firmly together. Tolerances are tight to ensure a clean cut, so try pressing in one side first before tackling the other. YOU WILL NEED TO PRESS HARD.
- Take a moment to admire your work, and the tool – (Or not. You can skip this step.)
- Align the puck’s edges – Line up the protrusions on both halves to ensure everything is in place.
- Insert the tube – Feed a PTFE tube through the top hole, starting from the outside of the guide and threading it through the holder’s eyelet.
- Cut with precision – SLOWLY rotate the holder until the tube slices clean through.
Congratulations, you now wield the power of The Bowden Puck!
Tube Fit & Hole Tuning
The puck is designed for a slight friction fit with PTFE tubes. If sliding the tube through is too tight or loose (which can happen as filaments might shrink differently):
- Too tight? Increase X-Y Hole Compensation by +0.025mm
- Too loose? Decrease by −0.025mm
Reprint guide as needed until the tube slides through snugly.
More info: Bambu Studio: X-Y Hole Compensation
Note: Adjust X-Y Hole Compensation if needed, not X-Y Contour Compensation.
Changelog:
Mar 31, 2025: Improve snap-fit and mating force
Bink3D
