11-30-2014, 12:44 AM
(This post was last modified: 11-30-2014, 12:50 AM by 12345678910.)
(11-30-2014, 12:15 AM)PixMan Wrote: I've got a quite an array of Starrett No.93 (A, B, C, & E) and No.91 (A, B, C, & D) and all came off eBay and Craigslist. None cost me more than $40, and there isn't a smoother, better gripping tap wrench made, IMO.
While I admire the will to make some, I don't know if you'd ever be able to make anywhere near the same quality. If you're definitely going to do it, why not just take apart yours and scale it up or down with reverse engineering? If you'd rather have exact dimensions for each, I suppose I could help by taking one (or more of mine apart to give you dimensions.
I've got a nice plan for a 91B from an old SouthBend apprentice projects book
Combined that plan with the Starrett product info, I'll have no trouble making up a nice set of 91's
I'm in Canada
Our used market is pretty dry compared to the US and UK flea market / boot sales
Or you have to drive 3 hours round trip to pick something up and our price of gas is double yours.
Buying Ebay is out because most sales will not ship to Canada and everyting shipped is an additional $40 for shipping and import fees, plus 13% tax on top of the item and the fees.
It makes it impossible to get deals like that.
Quote: why not just take apart yours and scale it up or down with reverse engineering?The ones I own are hardware store crap, none with the separate jaw that makes those good.
It's the 93C I'm after.
I can get some info from here for the general body dimensions
http://www.starrett.com/dms/download.asp...&p=93C&i=3
I take it that the body uses .939-20 as the thread dimensions
that part will be a challenge
The rest seems doable
I'd appreciate some info on
The body - the thread and the taper it has
The cutout
The size of the jaw inserts and the depth/ width of the v cut
the nut