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Old 11-15-2015, 06:02 AM
Bart Bart is offline
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Default More test runs/learning

Hi guys
I have been practicing with some home made dies in a Pullmax.
My issue is straight lines, I'm finding it difficult to make an almost straight line as there is a slight bow in it.
I tend to go off line a little and there is a couple of unwanted tweaks. Any tips on how to stay on the line? Basically I drew a straightish line on the sheet metal with a slight bow as on the car, marked a dot on the die and as I fed the sheet I found it difficult to stay on the line.
Here's some pictures to show what I mean.






This is another practice short run which is ok.
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Old 11-15-2015, 06:11 AM
Bart Bart is offline
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I'm guessing I need something like this? To keep it straight?
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Old 11-15-2015, 08:29 AM
Metal man bryan Metal man bryan is offline
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It looks like your using galvanized sheet it will not form the same as cold rolled sheet it has different property as far as shaping and will do funny things I think if you can get different material it might be big part of your battle hope this helps
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Old 11-15-2015, 01:36 PM
Jaroslav Jaroslav is offline
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I think you have to stretch the material several times and gradually add.
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Old 11-15-2015, 06:18 PM
Bart Bart is offline
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Thanks guys
Do you think I should use a more shallow die to start it off? Then progress to the final deeper die?
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