Small 2-piece Filament Spool

by Dingoboy71, published

Small 2-piece Filament Spool by Dingoboy71 Aug 26, 2016
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EDIT: Decided to make a couple of improvements: I shaved the outer 2mm off the entire spool to use less plastic, and added filament anchors along both inner & outer edges. There are now 3 anchors on the inner edge of differing angles to give you options, and 5 outer rim anchors for tying up the loose end. Also, the thinner walls should allow you to use more of the various filament clips you might have lying around if you so choose. The new files are called the "Small Holey Spools." I am not removing the originals, because choices rock.

Original description follows...

This is a smaller spool in 2 pieces which screw together. It is intended for winding your smaller quantities of filament, leftovers, etc. I am finding it quite useful for my filament samples from MakerBox as well as winding small quantity leftovers.

This is a very, very quick remix of the "small spool" thing created by tamel55. It's an awesome and handy design, but when I tried to slice it in Simplify3D or Cura, the threads on the male side of the spool came out with lots of holes in between the threads, almost like the wall behind them was made of mesh.

So I simply dragged the model into Tinkercad, "sleeved" the inner surface to thicken it by about 1mm all around, and it sliced fine after that. All credit for the elegant & handy design goes to tamel55.

Bi-color print was not planned. I just ran out of blue & grabbed a box labelled "purple." I guess a light magenta passes for purple in China. LOL

Print Settings


Monporice Maker Select i3 v2.1








50% rectilinear (Simplify3D)


Printed at 200C with 60C bed using Hatchbox standard PLA. 3 outer shells % 50% rectilinear infill, but I think when I print another, I will go 4 shells & lower the infill to 20-30%.

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this thing is great! way better for the $5 filament spools than the piece of crap small one haha

"...So I simply dragged the model into Thingiverse, "sleeved" the inner surface to thicken it by about 1mm all around..." Please excuse my ignorance here - how does one "sleeve" an item in Thingiverse?

Oops. That was supposed to say Tinkercad. Edited to correct. Thanks.

how do I put filament onto this I rolled it up really nice in layers and the second I let go it unravelled itself. Is there a way to get it to stay on the spool nicely ?

There is a hole in the Male side of the spool for you to push one end of the filament through as an anchor point. You might have to drill it out just a tiny bit, depending on how accurate your printer is. That helps with winding filament onto the spool. But keeping the filament from springing back to its "set" shape is difficult. I'm currently trying to design a spool for the Makerbox style filament samples that has a center hub large enough to simply work with those samples. (I didn't design this one- I just remixed it, and I'm not good at designing threads)

I didn't see a hole, I will take a closer look when my print has finished and get my dremel out currently taped it to the outside.

Thanks for the response I wasn't sure if I was missing a trick to get it to stay nice. Guess it will just stay loose at least it stops it falling of my spool holder.

Yep, it's pretty tiny. I actually found it to be too small in the original design, but I forgot to digitally "bore it out" in the remix process. So drill/Dremel will do the trick w/ a 2mm bit.

how big is the center hole?

Inside diameter is about 44mm, outside diameter is about 60mm.

According to S3D, it won't fit on my mono price mini select printer :(. If i shrink it, obviously the hole will be too small. I'll probably have to do some polygonal sculpting in maya or something to ensure the hole stays the same and everything else is reduced to 85%(-15% from original file).

Yeah, the Select Mini's print area is probably a tad too small for this spool. But depending on the size of the spool holder you use, this might still be viable at 80-85%. Rather than re-work the whole thing, you could just measure your spool holder's spindle & check. Of course, if you enjoy the process, I certainly wouldn't stop you. I personally need the practice!

If you rework it, be sure to post the remix. I'm sure others will want to print it on similar small-bed printers.

How much filament does it take to make one? Could I print it from one $5 filament spool, or will it take more?

I think you can print two or three with one spool.

hey there chris! haha

Sorry, never seen a $5 filament spool. Not sure how much filament is on one. And the amount needed changes with the number of shells/perimeters you choose to use, as well as the infill you chose. Best to slice the model to your liking and check the slicer info to see how much filament it thinks you need for your chosen parameters.

Sorry I can't give you a simple, definite answer. Too many variables.

For reference, I just re-sliced the model with Simplify 3D. 3 perimeters, 3 top & bottom layers, 20% rectilinear infill, extrusion @ 102%. No raft, 1 skirt. S3D says about 100 grams of filament, and about 32 meters. That's to print both halves.

This works perfect for the $5 filament spools. The skeletal five dollar filament "spool" fits right over the threads and will clamp between the 2 pieces of this spool as it is screwed together. This is going to save me a bunch of grief as the stock spool doesn't unwind very well. Yeah!

I was just going to ask if it would fit the 5DF! awesome!