I’ve mentioned my home made ground throws on a couple of threads, and some folks have asked for more information, so here goes.
These are a few shots of the finished product:
I build these by first cutting pieces of channel and tubing to 1/2 inch long. For HO I like 5/32 tubing. Then I stack them on top of a piece of 1/2 inch X .040 flat stock and solder it together like this:
Then I cut a diagonal slot half way through the tube, and then extend the slot straight down on each end using a small burr.
Next, I make the barrel. This is pieces of 1/8 and 3/32 tubing about 5/8 inch long and a piece of 1/16 tubing about an inch long. Slip them all inside of each other and solder them flush on one end. So the 1/16 tube sticks out:



