|Project by socrbent||posted 12-15-2012 07:20 PM||937 views||6 times favorited||4 comments|
This was a real learning experience. Used a 2 5/8” hole saw to cut out blanks. Then mounted on a spindle made from a 6”x1/4” bolt with head cut off mounted in a chuck. Two blanks were held in place by a mix of metal washers, nylon and wood spacers and a nut. A deep nut locked at end of spindle allowed me to anchor the other end in the tailstock live center. While on the spindle the blanks were smoothed, thickness set and the edges were rounded. Remounted each half on cole jaws to detail each face and balance weight of matching halves (found an inexpensive gram scale on internet to weight each half to the nearest tenth of a gram). Sanded on cole jaws and spindle to 320. Applied 2 coats of tung oil and waxed. Mounted on a maple 1/4” axle with 1/8” gap.
The protoype would not return, just went down and ‘slept’ (spun). Brian Havens indicated that you needed to create some side friction to cause string to start wrapping, so I used a knife to score the wood near the axle. This did the trick.
The halves are just force fit on the axle right now to allow for width adjustment.
Woods left to right:
Back row – Cherry, Padauk, Purple Heart, Bocote
Front row – Walnut, Zebra Wood, Walnut, Walnut (prototype
-- socrbent Ohio