Grooved Linear Bearing
thingiverse
This printable, grooved Linear Bearing is a 1/4" version suited for the cupcake CNC. ABS may not be an ideal material; however, it should suffice for light-duty applications when adequately lubed (thus the grooves). You can also opt for replacements by printing or use HDPE or UHMWPE (melting at approx 300F), with a non-grooved version provided. Please note: 1) Print in your desired material, 2) Ream ID to .2500" (your preference), 3) Lubricate (optional), and 4) Use it. Despite testing unconfirmed, the ID is slightly undersized for a snug fit.
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