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Size of filament spool compartment  

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Jeroen
(@jeroen-3)
Eminent Member
Size of filament spool compartment

I like using 5kg spools, and I wonder if these will fit. How big is the spool compartment on the side of the printer? 

Best Answer by alphasigma:

https://www.printables.com/model/1520379-prusa-core-one-l-full-cad-assembly

A 5 kg spool will not fit within the "side compartment" and due its weight you need an appropriate spool holder with support on both sides...

Napsal : 26/02/2026 7:15 am
alphasigma
(@alphasigma)
Active Member
RE: Size of filament spool compartment

https://www.printables.com/model/1520379-prusa-core-one-l-full-cad-assembly

A 5 kg spool will not fit within the "side compartment" and due its weight you need an appropriate spool holder with support on both sides...

Core One L

Napsal : 26/02/2026 9:07 am
Jeroen
(@jeroen-3)
Eminent Member
Topic starter answered:
RE: Size of filament spool compartment

Thanks! Indeed, using the step-file I could confirm the 5kg spools I use do not physically fit in the spool holder compartment, even apart from the weight concern. So I'll just have to live with 1 or 2 kg spools.

Napsal : 26/02/2026 9:52 am
alphasigma
(@alphasigma)
Active Member
RE: Size of filament spool compartment

 

Posted by: @jeroen-3

Thanks! Indeed, using the step-file I could confirm the 5kg spools I use do not physically fit in the spool holder compartment, even apart from the weight concern. So I'll just have to live with 1 or 2 kg spools.

Why only with 1, 2 kg spools? Why not designing a holder for 5 kg spools placed next to the printer...or take an already designed one...? 

https://www.printables.com/search/models?q=5+kg+spool  

😉

Core One L

Napsal : 26/02/2026 12:37 pm
Jeroen
(@jeroen-3)
Eminent Member
Topic starter answered:
RE:
Posted by: @alphasigma

Why only with 1, 2 kg spools? Why not designing a holder for 5 kg spools placed next to the printer...or take an already designed one...? 

https://www.printables.com/search/models?q=5+kg+spool  

😉

Space reasons. I have a spool holder that fits my 5kg spools ( https://www.printables.com/model/293431-spool-holder-holding-up-to-large-3kg-spools ), but I don't have room for a Core One L and a spool holder side-by-side.

This post was modified před 5 hours by Jeroen
Napsal : 26/02/2026 12:57 pm
alphasigma
(@alphasigma)
Active Member
RE: Size of filament spool compartment

This https://www.printables.com/model/1361348-2-kg-spool-support-for-core-one remixed for a 5 kg spool still too wide...? Sorry, never had a spool bigger than 1 kg in my hands...what are the dimensions of a 5 kg spool? Thx in advance!

Core One L

Napsal : 26/02/2026 2:09 pm
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