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Filament Spool Holder, Self Centering
di lewtwo
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I got lazy. Instead of repairing my old Ender2, I ordered a new R3D Mini (aka CteateBot) printer. The advantage being it is fully enclosed including the filament holder. While the printer has room internally for a full 1Kg filament spool, the included spool holder limits one to 500 Kg or 250 Kg spools ... worse yet, it does not roll because of design flaw. This problem needs some serious redesign and this is a WORK-IN-PROGRESS.
REVISION "B":
This revision strengthens the base (a lot), add alignment pens and provisions for 2 M4 x 75mm long socket head screws (and hex nuts) to hold the base together. You may not need those but I had rather have the possibility and not need them than to need them and have to start over.
The build platform comes down to within 35mm of the base and there is only 85mm between the steel frame and the build platform. That determined to envelope for the spool holder which is based on a pair of rollers running on R4-2RS Ball Bearings.
https://www.amazon.
REVISION "B":
This revision strengthens the base (a lot), add alignment pens and provisions for 2 M4 x 75mm long socket head screws (and hex nuts) to hold the base together. You may not need those but I had rather have the possibility and not need them than to need them and have to start over.
The build platform comes down to within 35mm of the base and there is only 85mm between the steel frame and the build platform. That determined to envelope for the spool holder which is based on a pair of rollers running on R4-2RS Ball Bearings.
https://www.amazon.
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