Mystery Spur Drive

[Darryl Fective]

I've had this for a while and I have no clue where I bought it or who made it. I've had a few people ask me about it, and I feel stupid not knowing. (and if I ever lose it, I'll want another) Besides a positive grip, it allows a very quick change from between centers, to chuck mounted.

 

[Lars Hansen]

Never saw one like this. What is the diameter of the back side?
And is it cylindrical or dovetailed?

 

[stu senator]

See

Robert Sorby Stebdrive Crown Drive Center | Shop Supplies | Craft Supplies USA

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A stebdrive center, but mounted the same way.

or

Patriot Drive Center

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Stu

 

[Darryl Fective]

Never saw one like this. What is the diameter of the back side?
And is it cylindrical or dovetailed?

It's just straight sided and about 2" diameter. There's a shoulder to rest against the faces of the jaws and the 2 lugs on the back go between the jaws. Even if it's only hand tight, it will stay in place and not slip.

 

[Dave Hulett]

pretty cool but expensive little bugger. $70 for a spur drive? better not lose it.