Well RockiMtn needed to modify this spider to fit his AC cranks. I've got access to a lathe and am always up for a challenge so thought I'd give it a go. The spider has 5-fold symmetry and the lathe chuck has 6-fold symmetry. So this was my solution.
Make a custom jig to hold the spider:
Some hefty bolts to hold it in place:
Mounted up on the lathe:
Yikes. I hope this stays put:
Performing the cut:
Removed 0.080 inches:
Nice and flush:
Make a custom jig to hold the spider:
Some hefty bolts to hold it in place:
Mounted up on the lathe:
Yikes. I hope this stays put:
Performing the cut:
Removed 0.080 inches:
Nice and flush:
