Knife sharpening fixture / jig

I found the original model lacklustered. The holders did not have 8mm holes for the rod. The extrusion parts where hard to fit. The clamping mechanism was lacking options and the holders had lefthand threads probably due to a mirroring of parts.

The revised parts have been oriented ready to print. Note that the ball socket needs organic supports because of the dovetail. Choose between LM8U vaiant for unparallelled gliding or just 8mm rod if you don't have a spare bearing laying around.

-Parts that mount to the extrusions are now easier to fit
-Added a variant for the ball joint to fit a LM8UU bearing
-modified the dovetail to be more robust
-Base of the jig now has a clamping fixyure as well as space for many 6x3mm magnets for strong holding force
-The holders are remodeled to fit a 65x24 stone