I switched over to using the Tridprinting.com metal spools and I really, really like them. My printed ones were always a little fussy. It was hard to get them so they were completely coaxial, and also the screws had a tendency to loosen over time. The metal one fits very snugly, without any wobble, and the set screws seems to hold very well.
Here is a link to the spools I'm now using: [www.tridprinting.com]
They're $20 for three of them, and I think well worth it.
I was also going to try one of the small stepper motors for the extruder. However, I seem to have blown the MOSFET for the cooling fan on my Printrboard, and I also need to get an extension cable for the wires on the stepper motor, so I didn't try it. The Printrboard is now on it's way back to Printrbot for a replacement. Hopefully I'll get the new board soon.
Here is a link to the spools I'm now using: [www.tridprinting.com]
They're $20 for three of them, and I think well worth it.
I was also going to try one of the small stepper motors for the extruder. However, I seem to have blown the MOSFET for the cooling fan on my Printrboard, and I also need to get an extension cable for the wires on the stepper motor, so I didn't try it. The Printrboard is now on it's way back to Printrbot for a replacement. Hopefully I'll get the new board soon.