How do you turn round cavities on a manual lathe?

the radius turning attachment

typically

snipped-for-privacy@lycos.com wrote in news: snipped-for-privacy@news.supernews.com:

With a radius attachment...or maybe a form tool...depending on size.

see:

Wes, Here is a link to a Holdridge ball turning attachment:

Will this work in the .30" to 1.06" range? Incase you are wondering, I'm thinking round ball moulds for muzzleloading.

Wes S

Thanks Steve and Anthony. Just realised I posted to AMC vs RCM. oops.

Wes S

I suppose its all in the accuracy of the setup but it should do.

ask the manufacturer to be sure

Tracer lathe attachment will do it too.

John

Make a cherry, then mill your own. Or better yet...if you know anyone with a decent hydraulic press..cut a pair of aluminum mold blocks, put a centering dimple in the proper place, put a proper diameter steel ball bearing between them, and put it into the press. Remove, mill the corners square, drill for pins and spru hole and voila..perfect mold. You may wish to scribe a few vent lines..or not.

Gunner

"If thy pride is sorely vexed when others disparage your offering, be as lamb's wool is to cold rain and the Gore-tex of Odin's raiment is to gullshit in the gale, for thy angst shall vex them not at all. Yea, they shall scorn thee all the more. Rejoice in sharing what you have to share without expectation of adoration, knowing that sharing your treasure does not diminish your treasure but enriches it."

- Onni 1:33

Ball Endmill? At least for fractional sizes.

Fred

I have a true-trace unit for sale for only $500, washington, PA

Button nose turn tool ?