I used our Brownells kit this past Saturday with mixed results…
1: I actually came in to work on a different aspect of my project, but of course the needed Woodshop equipment was not serviceable. So I proceeded with Jeweling/Engine Turning experimentation. I was not fully prepared for Jeweling, but nonetheless, gave it a go.
2:The various Machine Shop Committee members did not witness, as they were pre-occupied with the new shop conduit installation.
3: Material: K & S Stainless Steel sheet 430 2BA finish clear PVC 1 side.
4: Machine Used: Used Bridgeport w/DRO (used calculator and notepad to document X,Y coordinates).
5: I constrained a brush with both a piece of supplied heat shrink along with one of the supplied “O” rings.
6: Mixed the supplied abrasive compound with the cutting fluid and dabbed on the sheet metal.
7: Touched off and set the quill stop. Raising the knee 0.010 - 0.015 increases the circle diameter.
8: I was able to vary the diameter from 0.125 - 0.375. The diameters stayed consistent. X, Y spacing was perfect.
9: The main problem and flaw I did not see until after I finished the project. The brush had cupped and the center of each circle was not finished. Other than that, it came out very nice.
I am going to run another experiment using a rockwood stick and Clover Lapping Compound. Rockwood sticks are used with diamond compounds and solvents for polishing and finishing operations. It was also recommended to face the Rockwood stick (or dowel rod) with leather).