Sputnik Fixtures Dialed in on respective mills. Hone the tube mitering process up next.
read moreOther articles
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.
read more
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.
read moreWater 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.
read more650b Conversion Fender Bridge
Completed the replacement of the brake bridge with a fender bridge/bracket. Used a water bottle brazon to attach the fender.
read more650b Canti Bosses Installed
Top tube miters remain
Lug Prep - 53x54 73deg ST/HT
Fork Progress
After some more practice notching, brazing and cleanup work I put together another fork as the start of my next frame set. Thanks to Dave Bohm for the past critique on my earlier fork attempts. Big take away from his comments - work on the bend and make it more uniform and less "dog leg". I think I got that much better this time and happy with the bender. Used more FLUX per Dave's comments as well!
Jig from my Nephew Luke! Thanks Luke! 
Finished (mostly) fork! 
Finished (mostly) fork! 
Finished (mostly) fork! 
read moreHome made Fork Bending Mandrel - Tight radius as you can see.
