Tool Talk

What's-It Forum => What's-It Forum => Topic started by: CraigC on October 01, 2013, 08:44:34 PM

Title: Solid Copper Block
Post by: CraigC on October 01, 2013, 08:44:34 PM

OK, it's not a tool, but I did find it with some old tools... :-)

Solid Copper Block
2 3/8" W x 2 1/4" H x 1 1/4" D
Scale reads:    0    20    50    OIL

Thx,
Craig

Title: Re: Solid Copper Block
Post by: wrenchguy on October 01, 2013, 10:27:18 PM

a die 4 a oil pressure face?

Title: Re: Solid Copper Block
Post by: oldgoaly on October 02, 2013, 09:45:50 AM

for making a oil pressure gauge face?

Title: Re: Solid Copper Block
Post by: CraigC on October 02, 2013, 01:08:14 PM

>> A die for an oil pressure face?

I had thought about that, but wouldn't copper be too soft to act as a die?

If it is such, it would have to be the "master" template for a die since the block is not in reverse -- I know that's hard to see in my pix [sorry]. 

More info:  The block weighs about 2 1/2 pounds (40 to 42 ounces).

Thx for the fast responses.  Keep 'em coming!

Craig C

Title: Re: Solid Copper Block
Post by: oldgoaly on October 02, 2013, 06:03:28 PM

faces would be .020 or thinner many are done in Aluminum. That would raise the lettering then it would be highlighted with paint. could have been a test sample for the machine shop? but why in copper? The other part of the die could be rubber.

Title: Re: Solid Copper Block
Post by: rusty on October 02, 2013, 06:44:49 PM

> but why in copper?

Because you can photo etch copper. That was the standard method or making a primary plate for decades for photolithography. (The copper plate then makes a consumable master, and the image is reversed in the process)
 

Title: Re: Solid Copper Block
Post by: superzstuff on October 02, 2013, 08:15:53 PM

I think it is half of a plastic mold.