Another Tool Bargain

[papermaker]

I saw what I thought was a good deal on a set of Dumont keyway broaches on craiglist so I called and arranged to check them out. I found a set with broaches from 1/8" to 1/2" and a large assortment of bushings with the shims.
They had some surface rust on the bushings and the original box is going to need some work but for less than the cost of 1 broach and bushing I managed to get the rust off. Here's a couple pictures.

 

[Senna]

VERY sweet purchase.

You are to be commended on your bargain finding prowess!

 

[davidh]

now if you would rent them out. . . . .. .)

 

[papermaker]

Now I'm looking for plans to make a shop press. I was looking at a arbor press but I think a shop press would be more useful.
I guy that had them ran his own machine shop for several years and catered to the fishing industry. He has since closed his shop and just does small jobs for the local lobstermen.
He showed me a bunch of sockets that he turned out on a manual milling machine. Frankly I was stunned by the quality. These were 3/4" 6 point sockets that are used on the winches on the lobster boats. Very impressed .

 

[kd4gij]

At the price of this one.Unless you have all of the material,doesn't seam practical.
http://www.harborfreight.com/20-ton-shop-press-60603.html

 

[thomas s]

Wow nice find

 

[doug11k]

Most keyway broaches require 10" to 13" of travel. I used a 20 ton H-frame press for several years. The problem being that it would stroke only 5" to 6" then the channel iron 'table' would have to be moved .... usually twice for each pass .... up to three passes. Raising that table will wear you out! You may be able to design an easy to use table raising mechanism.

I now have a Greenerd No. 4 7 ton arbor press with adjustable knee giving up to 31" stroke by lowering the knee with a crank handle but not usually necessary ... better "feel" also.

 

[papermaker]

The kit came with different lengths of rods that you use after you reach the end of stroke of the press which eliminated the need to raise and lower the work holding table.
Not to knock HF's products but they seem a little on the light weight side.
I hope that I can design something similar but with heavier materials

 

[benmychree]

H frame presses are definitly NOT the thing for broaching; stroke and sensitivity are the big issues, except for the old KR Wilson presses that had a rack feed on the ram as well as hydraulic capability; we had one in the shop that I appprenticed in, and used it in that way. Arbor presses are definitly the way to go, but finding one with sufficient stroke (and height under the ram) is no so easy.

 

[docn8as]

my greenerd 3 Ton press is useful for broaching alluminum .not so for steel ...
FWIW ..been using lead & rawhide hammers to manually dirve the broaches whne too lazy to set up the shaper ...trepedisiously at first but so far no chipped teeth .
FWUW #2 have seen statements that using a hydraulic press ,requires frequent backing off to let broach starighten out ,last guy broke the broach not doing so ....no personal experience here....
best wishes
doc