4:24 pm
January 11, 2012
The box jaw adapter gave me the idea to carry things further and create a pair of tongs where the top and bottom jaws were removable. This enables a single pair of tongs to handle a large range of stock sizes and shapes. The following is a link to a YouTube video and photos of three jaw configurations:
6:57 pm
NWBA Member
Board Member
April 26, 2010
6:05 pm
January 11, 2012
6:46 pm
NWBA Member
March 22, 2011
6:04 am
January 11, 2012
BillyO, The heaviest set of detachable jaws is for the 1X1/8 flat bar. They have a combined weight of 10 oz. A coupler by itself is 2 1/4 oz. The jaws on the tongs are 3/8X7/8X1 3/4 inches. The density of mild steel is .283 pounds/inch cube. The two jaws weigh .325 pounds(2*.375*.875*1.75*.283) or 5.2 oz.
3:11 pm
January 11, 2012
I made a detachable jaw to handle drifts and punches. The three slots are 1/4 inch wide and just over 1/8 inch deep, 3/8 inches wide and just over 3/16 inches deep, and 1/2 inch wide and just over 1/4 inch deep. I found that a pair of box jaws will hold round bar if the depth of the jaw is just over half of the width of the jaw.
5:01 pm
January 11, 2012
I made another set of couplers. I bent the wire as before with a torch. Several were greater than or less than 90 degrees. These were bent cold to 90 degrees. Most bent without a problem. Several broke at the bend. I am at a loss to explain the failure.
I tempered the rest at 450 for an hour. I tested several of the tempered wires and none broke.
I thought if you heated high carbon steel and let it cool it would not harden and become brittle. Can anyone explain why this happened?
6:17 pm
January 11, 2012
I posted this on Bladesmithsforum.com. Jerrod Miller solved the problem. He posted that this is basically W1 steel and that in small diameters it can harden if placed on a metal plate to cool. I tossed them into a steel container. So, I figure the heated area of some touched the metal container while others did not.
https://www.bladesmithsforum.com/index.php?/topic/35163-heat-treat-question/
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