Filament spool with aluminum bar

by Clax, published

Filament spool with aluminum bar by Clax Nov 25, 2011


Another filament spool but this time with aluminum parts. Yes, I love the aluminum and use it often for my works. So I created this project starting from a bar of aluminum 10x10. My intention was to create a filament spool with a variable diameter to fit the different providers of filament. I also need to attach the spool to the workbench. So I made the pin with a nut 6MA inside(fig 4 and 8). I really like this idea, although it is not mine, but do not remember where I saw it. Of course anyone can change the base of the shaft to suit your needs. The central hub can be mounted in either direction, it changes the ledge of the spool. (fig 5 and 6). Sometimes it is useful to fix an end of the filament. Each stirrup has a slot with variable widths for filaments of diameter 1.7 and 3mm to secure it (Fig 7).

For this project, you need two Bearing 608ZZ and aluminum bar pierced 10x10mm, about 600mm.


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  • Print the parts: a hub, a pin, three brackets and three grafts (support not required)
  • For the pin with nut inside, it is necessary to pause the printer when has almost finished printing of the headquarters of the nut. So you put the nut and you finish printing (fig 8)
  • Cut 3 aluminum bars pierced 10x10, 180mm long
  • A small file to clean the sites for aluminum bars, so come with friction
  • Enter the two ball bearings in the hub
  • Insert the 3 bars in the hub (should enter with force to lock)
  • Insert the three stirrups in the bars near the hub
  • Put the filament, then expand the stirrups until the required diameter and block with the proper grafts
  • Insert the filament spool in the pin
  • If the filament spool rotates too much, you can enter a simple hydraulic gasket, before inserting the spool on the pin (Fig 9)