Making Drawbore Tools

You can order it online here *LINK*

Christopher Schwarz

>Sears.com sells the Companion set. Shipping is probably as much as the set, however.

Also, if you have access to a Grainger locally, you'll find a *wide* variety of drift/alignment pins. I made several drawbore pins from Proto alignment pins.

My pins are at the office right now. If you need specs, ping me offline and I'll mic the things for you tomorrow.

Chris


http://www.sears.com/sr/javasr/product.do?BV_UseBV

Re: You can order it online here

ThomD

>I pinged! Thanks.

Specs on my pins

Christopher Schwarz

>The English drawbore pin starts at 1/8� at the tip and tapers up to .435� over 6�.

The one I made starts at .175� at the tip and tapers up to .364� over 4�.

Chris

Re: Specs on my pins

ThomD

>Thanks, that English formula sounds like the ticket for smaller work. I may try mounting it on a T-handle as they do with reamers.

I CADed it out, and, duh, it turns out that starting with 3/8" stock, the same taper is 4" long, cutting out the part that taper from 3/8" to 1/2" that I won't be able to use with 1/4" pins. Pretty close to the drift pin modified in the article.

Re: Specs on my pins

ThomD

>Here is the pin. Still needs HT, buffing, and a handle.