The final frame prep is complete for Alex’s dirt jumper. Made the arbor in the shop to accommodate the cutters and the lathe made easy work of the process. This cutter is for a 44mm headset.
Headset Reamer/Facer Arbor
Random Acts of Art, Fab and Thread
Some recent goings on in the shop and in the craft room.
Small Sculpture 
Gardener 
Gardener – initial look 
Small Sculpture 
Small Sculpture 
Bike Frame 
Chuck Cover Prototype 
Small Sculpture 
Small Sculpture 
Chuck Uncovered
Practice Tubing Prepped
Dialed in the BenchMaster Mill and made a few practice pieces for Tig experiment. I am sure these will not look so good after the Tig experiment but looking forward to that just the same. These are 4130 straight gauge tubes 1- 1/8″ .035 wall notched at 90 degrees to to mate with 1-1/2″ .083 wall.
Tubing Practice
Sputnik Fixture – First full frame miters a success!
Still have some tweaking to do but blown away by how well the fixtures worked. Got a little tube clean up and prep to do before fillet brazing. Henry James Jig needs some dialing in as well.
Sputnik Fixtures Dialed In
Sputnik Fixtures Dialed in on respective mills. Hone the tube mitering process up next.
Sputnik Jig Setup
Experimenting with slotting tubing for dropouts on Sheldon Horizontal Mill. Vise allows pass through for stays and keeps various diameters centered on slotting saw. For tapered tubes the vise can be tilted to compensate and a round wire on the top of vee block makes for rigid setup.
Sputnik main tube fixture on the old horizontal mill.
Sputnik Chainstay Fixture on M22 Diamond Mill.
Another view of slotting setup. Cut a bunch of straight 4130 to dial it in. 
Frame Progress
Initial setup in jig. Got some more hours of cleanup and adjusting to do before brazing starts but happy with it so far.
Water Bottle Jig
Machined some vee grooves into some aluminum I had hanging around. Will add drill bushings at some point but works GE for now.
650b Conversion Fender Bridge
Completed the replacement of the brake bridge with a fender bridge/bracket. Used a water bottle brazon to attach the fender.
650b Canti Bosses Installed
Finished the rear bosses and have the fork to clean up.
