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#1
09-01-16, 12:01
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There is so many different channels some on the outside and then ones that fit on the inside, not to mention the amount of holes with countersink points as well. Some things may not make a lot of sense but I'm just showing some of my methods of construction and fabrication.
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#2
09-01-16, 12:10
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I should have done a few more pics but what I did was make a hole jig out of 16mm thick plate and milled it to fit inside the channels. I marked the plate as accurate as I could where the holes go and drilled a 3.5mm hole at those points. I used thick plate so I could drill buy hand and the thickness kept the drill bit vertical. With so many to do it was much quicker to do by hand rather than the drill press.
I also made a countersink tool to fit my cropper.
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#3
09-01-16, 12:15
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After fitting the tooling to my cropper I set the depth to the exact countersink I wanted so it was automatic otherwise they wouldn't be uniform and they turned out Ok. I'll have to do other types as there are some that have a flat section on the base. I probably shouldn't have tackled this as it is a lot more than I realized.
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#4
09-01-16, 18:31
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Mine was also made in Australia but doesn't have the pressings in the side panels. There was a discussion on here somewhere which I can't remember fully now. But the conclusion was that there were differences between the UK, Oz and Canadian variants which indicated that some didn't have that pressing.
It would certainly make life easier for someone like yourself Colin without that feature. Great job  Ron
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#5
13-01-16, 11:41
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Ron, that would make it a lot easier without the pressings. I notice that there is also a difference in the amount of notches that are not in the bracket that is bolted on top of your set or perhaps that particular part might be a repro.
It does make you wonder why there had to be so many variants of anything when the goal was the same at the end. It just seemed to create work that wasn't really necessary. After considerable time thinking how and what I could use to rivet the end parts on, I ended up using bullet head nails cut down and pressed into place and they did work very well and have the same appearance and does the same job as the original. I guess I'm about half way now.
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#6
13-01-16, 17:51
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Yes indeed Colin, my whole frame is repro and made by a countryman of yours although I don't know him as it was all arranged years ago by another forum member.
I can see the missing notches you refer to, and I guess he just cut some corners to keep the price within reason. Ron
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#7
17-01-16, 09:01
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I have just made the earth straps and there is 4 for each unit. I have cut some 1/2" copper pipe and used that as the ferrule on the ends and that gave me about 3/4" as per the original once flattened.
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