Bambu Lab Spool Lock Nuts 3D printable model by Mitchimal

Bambu Lab Spool Lock Nuts

Source: Thingiverse by Mitchimal

The Bambu Lab Spool Lock Nuts is a free printable 3D model from Thingiverse by Mitchimal. This is a lock nut to fit Bambulab spools both the 53mm and 55mm versions that I have got. You can download the STL file from the original listing below and print it at home.

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30 saves Source: Thingiverse Updated 2026-03-16

Tags: Bambu, Lab, Spool, Lock, Nuts

About this model

This is a lock nut to fit Bambulab spools both the 53mm and 55mm versions that I have got. I had 2 spools unlock in the AMS and jammed everything up so needed to keep them together. Someone else said they had designed the same thing but I couldn't find it so thank you to IAN POLLARD for the idea! I printed these on adaptive layer heights with ABS and they worked great. I designed it using a tighter thread allows more friction when tightened. Uploaded step files too so people can edit and do what they want with them.

Frequently asked questions

Is this 3D model free to download?
Yes. Bambu Lab Spool Lock Nuts is free to download from Thingiverse. Click the "Download free STL" button 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 Mitchimal.
Who made this model?
Designed by Mitchimal, 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.

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