Grinding the jaws on my three jaw chuck

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AdeV:
Just out of interest, how are the scrolls in a 3-jaw (or any self-centring chuck) made? Rough cast then machined on a mill? Milled from billet? Forged?

I'm wondering.... how hard can it be :lol: to just make a new scroll? :scratch: This is not a serious project BTW, I'm just curious.

timby:
We had a scroll made for a special application a few years ago, it was turned on a lathe.

philf:

--- Quote from: AdeV on January 22, 2018, 01:44:53 PM ---Just out of interest, how are the scrolls in a 3-jaw (or any self-centring chuck) made? Rough cast then machined on a mill? Milled from billet? Forged?

I'm wondering.... how hard can it be :lol: to just make a new scroll? :scratch: This is not a serious project BTW, I'm just curious.

--- End quote ---

Ade,

I would have thought a "useable" scroll could easily be made on a cnc mill.

Make out of heat treatable steel. Rough it out, harden and temper and then finish with a decent carbide end mill.

Phil.

(Do you still want the vice?)

AdeV:

--- Quote from: philf on January 22, 2018, 04:11:35 PM ---
Ade,

I would have thought a "useable" scroll could easily be made on a cnc mill.

Make out of heat treatable steel. Rough it out, harden and temper and then finish with a decent carbide end mill.

Phil.

(Do you still want the vice?)

--- End quote ---

Hi Phil,

I did wonder that, but I figured it might be a bit "lumpy"; I may have a go at that one day, maybe make it out of wax...

Vice - Mm, yes please. I only got my car back the week before Christmas, so honest I've not been deliberately avoiding coming over... I'll send you a PM.

Cheers!
Ade.

WeldingRod:
If you have power feed on the cross slide, you can cut a scroll. The trick is figuring out what pitch you are going to get!
I cut a scroll thread into my lapping plate many years ago.

Sent from my SAMSUNG-SM-G891A using Tapatalk

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