home laminating jig

[fightclubonfridays]

I would like to see any pics of a jig used to press out jaw laminations. I have lots of rod at home and hate to buy them if a simple jig could be made.

Also is it necessary to carry the laminations around the corners on a square jawed trap or would a straight piece of stock be sufficient.

Thanks

[seldom]

May 26, 2011 20:20:20 GMT -6 fightclubonfridays said:

I would like to see any pics of a jig used to press out jaw laminations. I have lots of rod at home and hate to buy them if a simple jig could be made.

Also is it necessary to carry the laminations around the corners on a square jawed trap or would a straight piece of stock be sufficient.

Thanks

By wrapping/reenforcing the corners on the outside of the bends, you greatly stiffen them in no small way especially when your tacks wrap the corners. When you wrap the corners with weld metal away the jaw ends instead of spot tacking there is a secondary stress(longitudinal) that occurs when the weld is cooling that applies stress(tension) in a manner that forces the jaw ends outward which is a good thing. Basically, the heat input of your weld is relieving some of the cold-worked stresses when the jaw was made and replacing those stresses with your hot-work ones in such a manner that strengthens the jaw in a couple of ways.

Also, and what I feel is quite important, is to add a tack/weld metal to the very end of the lamination. When that weld metal cools(outer edges to center) there is a even more powerful stress being applied toward forcing the jaw ends outward. The end result after everything is cooled is that these stresses are now built in so to speak, which means there is now always outward tension on the jaw ends.

Anytime you wrap a bend or corner whether it's a pipe bend, structural corner, or a trap jaw bend, it's all the same, you've increased that area's capacity to resist straightening tremendously!

[fightclubonfridays]

that makes sense. thanks

[nightstalker1]

I tack and blend the ends and weld around the corner

Works well for me...very strong

As stated, a small cross-sectional area of weld is very strong

[7oaks]

I bend the rod around a pipe, then cut into correct lengths.