This is an older design. The new version of this spool is available here... https://than.gs/m/1331616

This reusable spool for Bambulab Filament refills is simple to print, snap together and nestable making them quite convenient.

The spool consists of two nearly identical parts which you print and then mate together by simply twisting them. The difference between the two halves is a small nub on the core of one half that is used to index the cardboard core on the Bambulab refill. There is a detent to hold them in position but you can reverse twist them to separate the halves just as easily. They also can be nestable for storage

I have included a printable snap-on label card for marking what filament is in the spool. The card also has some slots so if you remove a partially used spool you can zip-tie the label to the partial spool before putting it in storage. The card can snap onto multiple locations and on either side of the spool.

Another feature I added which is out there but I did not like how it was done on the ones I looked at was the ability to add zip-ties to the partially used filament roll before removing it from the spool. I made the side slots for inserting the zap strap extend to inside the spool diameter where there is a space for the strap to pass under the filament core. And, then I created offsetting additional space that allows the re-useable spool to be twisted and separated without interference with the now-installed zip-tie.

Lastly, I added more holes for inserting the end of the filament to tie it down. It always bothered me that some of the spools from the manufacturers have very few holes in the sides so you have to unspool some filament to reach the hole. Not a big deal… unless you are OCD. ugh.

100% printed - no hardware, fasteners, or adhesives required. No support is required.

Print Settings

For the best results, I suggest the following: Material = I recommend PLA or PETG but any material should work.
Nozzle = 0.4mm Layer Height = 0.2mm Line Width = 0.4mm Wall Count = 4 (1.6mm) Top and Bottom Layer Count = 5 Detect Thin Walls = ON Wall Generator = Arachne Infill = 40% (Cubic) Ironing = Not required Support = None required Print orientation = As per the STL/3MF files.

Related Links

I also have made a spool for:

New V2.0 of this spool for BambuLab and New eSun Spools https://than.gs/m/1331616

eSun (older spools) https://than.gs/m/999752

Das Filament https://than.gs/m/1142092

Visit my blog for more details and other designs: https://www.logicalplanet.com/

Revisions and Updates I occasionally update and revise my designs. When I do, I’ll document the changes here. Check back periodically for the latest revision notes or if you’re experiencing any issues with a model.

20250401: I have added a second set of spools with increased detent between the halves. The filenames for these parts includes the words "extra detent" so you can identify them. I have had a few users tell me the two halves are too loose and these parts are designed to address that. If you try them, please let me know how they work for you.