Questions regarding Heinrich cross drill jig I just bought (w pictures)

[auto.pilot]

I've been looking for a small cross hole jig at a reasonable price for at least a year. Now that I have one... I could use a bit of assistance. I found this Heinrich 300 cross drill jig on ebay. Guessing this will handle round stock up to about 3/4 inch.

As you can see from the pictures, it appears to have never been used. Anyone have an idea of the age? Heinrich's small version is now called model 305 and is somewhat different.

My primary concern is finding additional v-shaped inserts in various sizes. The one that was included simply says '20'. What does that mean? Anyone have a source for additional bushing/inserts?

Thanks

Jim

 

[auto.pilot]

I just figured out that the V shaped insert is two parts, the 'V' and a small insert (see picture). I am hoping there is more than one size available, since this insert is really quite small.

Thanks for any and all advice.

jim

 

[epanzella]

duplicate post

 

[epanzella]

The smaller insert is a hardened drill bushing. There should be a whole range of bushings with the same OD but varying ID's that would work with this tool. You may even be able to get a bigger bushing holder for larger holes. If you google drill bushings a lot of choices come up. Unless that tool uses a propriety size You should be able to match up the OD.

 

[OldMachinist]

Parts list
http://www.heinrichco.com/serviceparts/achdrilljigs.pdf

From the parts list it looks like there are 2 different sized V tapered liners, 5/16" and 1/2" ID.
The bushing you have is likely for a #20(.161") drill.
You can get new slip-fit drill bushings from .0135" to .1935" for the 5/16" liner and .1405" to .3437" for the 1/2" liner.

For bigger hole sizes you don't use the tapered liner and just use the right sized brill bushing in it's place.

 

[Frank Ford]

If you have a lathe, it's a simple and fun project to make up your own bushings. If you're nutz like me, you can also harden them yourself easily. I did that, and I'm rather certain I'll never use any of the bushings enough to wear it out. Just in case, I made up a coulple of blanks too, when I put together my own cross drilling rig.

Here's a link to that project:

http://www.frets.com/HomeShopTech/Projects/CrossDriller/crossdriller.html

 

[Bill C.]

The bushing looks like a slip fit headed model. Any good die supply company can order them for you. Just tell them the outside diameter and the length from the shoulder to the end of the bushing. I order a couple of small bushings several years ago from a local company. Within a weeks time my special were delivered. Nice jig.

 

[Illinoyance]

They use standard liner bushings.

 

[deakin]

mine came with two liners. i get the drill bushings from mcmaster. for the price of the bushings i have other things to do