Is this 3D model free to download?

Yes, Retracc: The Retractable Karambit Knife [Now With Magnets!!] is free to download from Thingiverse. Open it in the free Thinger app, or use the "Download from Thingiverse" link to open the original listing by the creator.

Where do I download the STL file?

The download is hosted by Thingiverse. Use the "Download from Thingiverse" link on this page to open the original listing and grab the file, or save it to your print queue in the free Thinger app.

Designed by BiscuitsOnTheFloor, published on Thingiverse. Please credit the creator when sharing your print.

Can I print this at home?

Yes. This is a printable 3D model intended for home FDM and resin printers. Check the original listing for suggested print settings.

Retracc: The Retractable Karambit Knife [Now With Magnets!!] 3D printable model by BiscuitsOnTheFloor

Retracc: The Retractable Karambit Knife [Now With Magnets!!] photo 1

Retracc: The Retractable Karambit Knife [Now With Magnets!!] photo 2

Retracc: The Retractable Karambit Knife [Now With Magnets!!] photo 3

Retracc: The Retractable Karambit Knife [Now With Magnets!!] photo 4

Retracc: The Retractable Karambit Knife [Now With Magnets!!]

Source: Thingiverse by BiscuitsOnTheFloor

The Retracc: The Retractable Karambit Knife [Now With Magnets!!] is a free printable 3D model from Thingiverse by BiscuitsOnTheFloor. This knife uses regular trapezoid shaped razor blades, with 3 magnets allowing it to lock closed or open. You can download the STL file from the original listing below and print it at home.

Open in Thinger (free) Download from Thingiverse

14,497 saves Source: Thingiverse Updated 2026-10-13 License: CC-BY-NC · non-commercial 76 makes Category: Tools & Workshop

Tags: butterfly knife, counterstrike, CSGO, csgo knife, Karambit, knife, m3 nut, m3 screw, magnet, magnetic, mechanical, razor blade, razor holder, Stanley

About this model

This knife uses regular trapezoid shaped razor blades, with 3 magnets allowing it to lock closed or open. I designed this in solidworks, and converted the files to step files for anyone who wants to modify it. I loved the original design, but I felt it needed magnets and all the holes were much too oversized when printed dimensional accurate, I also didn't have any M2.5 hardware and I don't trust machine screws threaded into plastic so I added nuts on the blade holder. This is a remix of a design by corrugatorsupercilii that has been removed from thingiverse, you can find it reuploaded to cults3d here: Here is a video of it in action:

Frequently asked questions

Is this 3D model free to download?: Yes. Retracc: The Retractable Karambit Knife [Now With Magnets!!] is free to download from Thingiverse. Open it in the free Thinger app, or use the "Download from Thingiverse" link above to open the original listing.
Where is the STL hosted?: The download is hosted by Thingiverse, not by Thinger. We link you directly to the original listing by BiscuitsOnTheFloor.
Who made this model?: Designed by BiscuitsOnTheFloor, published on Thingiverse. Please credit the creator when sharing your print online.
Can I print this at home?: Yes. This model is intended for home FDM and resin 3D printers. Check the original listing for suggested print settings like layer height and supports.