lathe burnisher. The easy way.

[Cascao]

Saw somewhere a fancy lathe burnisher using a sfere supported by a bearing.
Sfere was used to apply big pressure in only one small portion of part beeing finished.
Toll worked very well improving finish and I decided make one.
but...
While thinking about how I will do mine realized that I could design one easly if using a special bearing from a car tripoide axle to replace sfere and bearing. This bearing has an curved outter diameter that allow pressure be appied in only one point of part, just like sfere do.

after a short trip to a junk yard, installed bearing in my boring bar AXA tool and here what I come with:



Oiled part and first test results where impressive



Definitly best finish on a mini lathe turning A36 steel I archived.