Thanks to all who responded to my question on how to bend aluminum tuning
and avoid collapse. Thanks: KE2LJ, KN6DI, N1RUI, W4WDN, K9OFG, NO6X,
WA7MIG, KH7R, KZ5Q, K4XL, N1SR, W7WHY, AA4Z, NI6W, N7CL, and VE3AD.
Advice was:
1) use an EMT hickey
2) fill it with sand first
3) fill with 150 deg cerablend; bend when cooled, reheat to remove
4) freeze water inside the tube before bending
I had to bend 1/2 inch tubing with 1/16 inch wall. I used masking tape to
seal one end and a funnel to fill the tube with sand. Then more tape to
seal the other end. The tubing bent in an electrician's hickey like a
charm. I used canned air to blow any residual sand out of the tube.
Again - thanks to all. 73, Steve WB6RSE
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