Add line clearance to y carriage bottom
Mucking with x carriage
xy pulley progress
More fiddling with pulley

One observation: with the current design, the pulley is probably too
tall.
Reduce overhang angles to make easier to print
MOAR BLOCKY, easier to print
MOAR BLOCKY y end rear, simpler, easier to print
Simpler and blockier y end rear

BLOCKY IS THE NEW BLACK
MOAR BLOCKY y end front