PrintrBot Jr v2 Bearing Blocks, Z Block and 8mm Spacer.
thingiverse
When I build a PrintrBot Jr could not get files or design for the aluminum blocks and could not found the spacer, so I made my own version of this! 8 mm Bearing Blocks (bearing sleeves) Z Block 8mm spacer for 608Z bearing and for board placing Instructions Push inside of the block the bearings, the will fit very tight for stability purposes, hammer them gently until they go all the way in. Important to know, push one in each side. The Z block fits very tight as well, so hammer gently the vars. same thing all the way in.
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