I had some 8 mm carbon rods laying around and figured my 3D printer needed an upgrade for the spool holder. The rods are nice and long (50 cm each) and I originally intended them for a quad copter build, but I found rc-helicopter tail-rotors made of aluminum to be a better fit for that project.
![](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjKkzkA4r911IXCRqNd9tKmKOYeepg9yyKVtWLkrrKPtbgpjmT889-8xctBgDc9FU14snzB3SAnSmr9V-O1UIoZUg6F1SIPn6azQwiZFJEKCiASZsNbLZMhyphenhyphencNvdGN4V6aGJAoVJKBoU3e-/s320/10438030-AF74-4E4C-9C93-F7B85081A5B6.JPG) |
Finished contraption. |
The whole printer/spool holder assembly is quite high, but it saves space on the table at least. It's this high by design since the y-axis moves back and forth and having a bit of distance between the print head and the spool is good in that case.
![](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgNDAfyZ4s7Djob8V7mhUQqpVXt2BeXldoZ0oUUXq-X-7gDlxvzMD7ICZafknk9ySpLt0hejAdA8XbozK1yqe-yEbbY8igUnbmMBfHWr7-07GPSo8QpaLwUtP87n_qn7FaqJd23PmNgfy3q/s320/174B6CC5-0C4E-45A3-B519-FEA3971708F6.JPG) |
Closeup of the spool holder. |
For the center rod I used a threaded rod. This makes the centering of the bearings easier and also adds to the stability by allowing us to tighten the hold around the bracket from the vertical rod a bit.
Oh, and it rolls so much better than my
last try. The design can be downloaded from
Thingiverse.
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