LinkBack URL
About LinkBacks
Another suggestion is to drill right through the annealed ball bearing whilst it's in the lathe, countersink one end, then weld or braze the shaft in place filling the countersink with weld metal, which is then ground or linished off to retain the spherical shape.
The holes in the brackets need to be perfectly aligned as matching pairs (drill them together) and be placed close to the ends of the brackets to allow maximum articulation of the shafts.
You will be very pleasantly surprised at how rigid the structure becomes when the knob is tightened firmly.
Reply With Quote
Bookmarks