Quote:
Originally Posted by Bob Carriere
Very nice work.
Can you tell me what gauge (or mm) sheet metal you were using....cold rolled.... how many passes with progressive pressure did you need to be doing to finish a rib. I assume that you do one rib to its full depth before starting the next one.
It seems that every attempts I have made, on scrap pieces, results in a corrugated sewer pipe .... really curving back on itself. Is the secret to roll and stop short at each end to have a flat end surface.
Cheers
Bob C
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Bob, I did probably about ten gentle passes through the roller until the rib started to become defined then I could apply firmer pressure. I dressed each end as I completed each rib which flattened out the ends. I was expecting some inwards curving but am very pleased that I achieved what I wanted on the first attempt. I did start with the centre rib then alternated each side working outwards. I’m not a sheetmetal worker, I just make it up as I go along with the limited equipment I’ve got and hope for the best. You can do a lot with angle iron G clamps and hammers.