On this first one for a 650, I just drew a high contrast shape with a felt pen and let a metal fabricator use his "seeing-eye" pantagraph, torch out the 3/4" metal pieces. This was done about 15 years ago.
On the second one, I made templates from sheet plastic and mailed them to a shop that does nothing but burning. In both cases, the holes are located in the plate one at a time. I use a threaded fastener with a point machined on the outside end. It goes into the tractor frame and protrudes about 1/16". The plate gets whacked against it.
All this cutting can be done with high precision with a water-jet or laser. All the fabricator needs is a good print. The cutting head is controlled with a digital file. Those with cad-cam software could probably send the file on an email.
Here are a couple more pieces professionally torch-cut. I like square cut kerfs. Some might think that the hardware was factory made.
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Today's Featured Article - The Cletrac General GG and the BF Avery A - A Bit of History - by Mike Ballash. This article is a summary of what I have gathered up from various sources on the Gletrac General GG and the B. F. Avery model A tractors. I am quite sure that most of it is accurate. The General GG was made by the Cleveland Tractor Company (Cletrac) of Cleveland, Ohio. Originally the company was called the Cleveland Motor Plow Company which began in 1912, then the Cleveland Tractor Company (1917) and finally Cletrac.
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