Linear Bearing Y Stage for Cupcake
by Zydac, published
Still upgrading my Cupcake! This is a compact lightweight Y stage for the Makerbot Cupcake that uses SW4G linear bearings.
note 11/1/12: I added an 8mm version as well since Apparently some Cupcake models use 8mm rods. This should fit an LM8 linear bearing. This is untested - I am assuming the rod spacing is the same as my model.
11/3/12 I added two more experimental versions modified to fit the Lowrider - 1/4" and 8mm versions. Also original Rhino 3d files
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This printed pretty well on my machine without support material despite the overhangs caused by the bearing tubes.
Press fit bearings in the tubes. Use plumbing tape if you need to shim it. They need to align pretty perfectly. Superglue magnets in the usual places. Attach belt with 3mm bolts and the belt plate. There are four pockets for hex nuts in the corner arms if you want to put a 3mm leveling screw there.
These are the bearings I used: http://www.vxb.com/page/bearings/PROD/Kit12770?gclid=CK79uLj9rbMCFUKd4Aod52gAHA
They just got a little more expensive so you might want to look on Ebay