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Spool Holder / Marble Machine

by LoboCNC, published

Spool Holder / Marble Machine by LoboCNC Dec 30, 2015
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Solidworks

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Thing Statistics

32542Views 3437Downloads Found in 3D Printer Accessories

Summary

What is more fun than a spool holder and more useful than a marble machine? A spool holder/marble machine! This extruder-driven marble machine uses 6mm airsoft pellets as recirculating bearing balls for a friction-free spool holder. When you get tired of watching your printer print, you can now keep yourself entertained by watching your filament spool turn! Designed for 8" diameter (nominal) spools, 3 1/4" wide or less.

New: I've just added a "slim" version that is more stylish and use a little less filament.

Watch it go: https://youtu.be/DcY06NCV014

Print Settings

Printer Brand:

MakerGear

Printer:

M2

Rafts:

No

Supports:

No

Resolution:

0.2mm

Infill:

10%


Notes:

Print one left-side, one right-side and two screws. The screws print on end, so add a brim to keep them from coming loose while you print. The "slim" version of the right and left sides are functionally identical to the original versions, but they use a little less filament and print a little more quickly.

Post-Printing

Press the left and right sides together over the two screws and then start each screw into both sides simultaneously. Adjust the width to match your spool. Put 33 airsoft pellets (6mm dia.) in each track than then place your spool on top so that when you pull the filament, the balls roll up to the top end of the ramp.

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Could you make the angles at the end of the slim version a bit steeper so the balls roll back in better? Especially if it's not totally level.

I'll look into it if I can get some time...

I love this, and it's just what I needed for the spool I bought that doesn't fit on the built in holder on my printer.

So fun ~ maybe can remix one for Prusa i3 haha .

Creative idea i like it

When I first looked at this I thought 'How random, why would I want a marble run in my filament holder' now the penny has dropped and it's made my day - a beautiful piece of Steam Punkery, hat's off to you!

You know how sometimes you come across something and you just stop, and your mouth drops open and you just think OMG THAT IS {insert expletive of choice} BRILLIANT?

Yeah, I just had that. Absolutely love this.

Hey, thanks! Although you might not think it is so #!$@&% brilliant after listening to the balls rattling for 5 or 6 hours :)

Any idea if adding more pellets to the tracks deadens the sound? I do love the design!

Each ball, as it falls, needs a little momentum so that it travels all the way around back to the back edge of the spool. If you have too many balls, they'll probably just get stuck at the bottom edge of the track.

If the musical whine of the stepper motors hasn't sent me up the clock tower yet, I think I can survive this. :D

Thank you! You made my day! It's super awesome!

My wife would KILL ME...

This is the best and most annoying design I've seen adding 3D printER and creativity together. Annoying because I spend half my time eliminating rattles of all sorts, and then i find myself wanting to print this. Great job!

unfortunately the balls do not roll properly. they stop before the spool starts at the edge which causes a jam

If the printed part is not perfectly smooth, you may need to run a bit of sandpaper in the ball slots to make the balls roll smoothly.

Comments deleted.

why didnt you enter this in the filament challenge it probly would have won

Thanks! Unfortunately I didn't think of this until after the contest...

Love this design! It inspired me to make my own, and I hope you don't mind that I kept your ingenious screw design:
http://eksdesigns.com/taz5-spool-holder/

I don't mind at all. Thanks for the attribution.

Oh, this is frikkin' brilliant! Congrats! Nice work!

Can you publish the Solid Works files? I need to change the radius of the spool and make the conecting screws longer. In Europe it looks like the spools are usually smaller in diameter and wider. I have 10 spools here with 160-180mm diameter, so the grooves may also be trenched deeper...

I've just added the Solidworks files for the "slim" version. The design is a little bit of a mess, but you are welcome to go at it.

Great! Thanks!

great idea!!! can you make it customizable?

Unfortunately, I designed it using Solidworks which doesn't really work with the Thingiverse customizer.

how to do you get the balls?

buy them at walmart or some other store that carries airsoft bb's

Just search for "airsoft pellets" or "airsoft BBs" - thousands of stores carry them so you should be able to find them locally or on Amazon.

Wow that's actually really cool!

One step beyond.

Impressively creative! The noise of the falling balls would probably drive me crazy in a hurry though. Chuckle.
(Come to think of it, i could have used the noise to let me know yesterday when the extrusion stalled....Kezat is right. I lost the darned print two hours in. Most annoying.)

Very creative! Nice job as always!

Extremely creative. You're quite the designer, thanks!

This is hilarious.

Good stuff!

Dec 30, 2015 - Modified Dec 31, 2015

Thanks for the kind comments! Note I've added revised files for the right and left sides that are a little slimmer and more stylish.

We totally loved your spool holder LoboCNC! :-D

Thanks for sharing the files and video.

I like it!
A added bonus is you know if you get a extruder jam as you will stop hearing the falling balls.

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