Gayle Brooks Posted January 2, 2010 Share Posted January 2, 2010 I gave the topic the same project name that it is in the studio. After cleaning up the working drawing I was given, and got the small details figured out I went to the prototypes for the grill of these fire doors. This particular one was a type of "knuckle" joint. The challenge was to forge this detail and be able to do it so that another joint could be laid out on the same bar. I tried to forge this out on the anvil and power hammer, though could not get a consistent, controlled result. So after upsetting the mass, offsetting it to one side, drilling a hole and cutting mass out to create a slot; I used a press to squish this joint out. I made some tooling for the press that had 2 shoulders to control the piece to stay inline. Ended up breaking the press step up in 2 parts. One was using a 3/8"x 1" flat bar and set it in the joint under the press. Next I opened it up a little making room for my 1/2" x 1" bar and doing that last squeeze. The result was nice and very clean. I apologize ahead for this is a camera phone pics. Thanks for reading! Ill post more soon. Quote Link to comment Share on other sites More sharing options...
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