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Re: Unimat Scroll Saw


 

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Hi Dick:

I last worked as a die maker 50 years ago, so my memories of that die is limited to breaking the band saw blade over and over. Suffice it to say just drilling a round hole was too large for the die set, and wouldn't have worked for the stripper. I think the openings were in a circle, so think of a band cut into segments with a small space between each. So a bit like a fat explanation mark (!).

Then there was the shuffle die for the grill on an electric heater. It took 4 cycles to punch the holes while the part was shuffled side to side and front to back. And since the hole count was 20? top to bottom and 37 side to side the die set had to "PULL" one column of punches on two cycles. They could have saved a bundle if they had changed the count to 38!

Carl.

On 2/23/2025 8:45 PM, OldToolmaker via groups.io wrote:

Hello Carl.
I am trying to visualize what you mean by keystone shape punches. I know what a die set is and how it functions. I have built does well. I just need a little help with shape of keystone. Most of my career was in plastic mold making and associated plastic mold design.?
Dick

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