Terry_Cowan (16K)
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Created By: Terry Cowan


What to expect when shrinking with Thumbnail dies. (24)
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Tracey Copeland shrinking on the P-5 on a visit to the shop with Don Ross and Geezers.
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This is a part Loren Richards did in 70 seconds with just the Pullmax shrinking dies -- no wheeling.
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Loren Richards thumbnail shrinking dies -- the type used in this album.
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More of Loren's dies. Contact info: Loren Richards * 920 Heather Ln W * Chino Vally, AZ 86323 * (928)636-2625 * Loren910@cableone.net
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These photos are just to give you an idea of what kind of surface to expect when shrinking with thumbnail dies.
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Click the photos for larger views.
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Original metal thickness is about .031
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Thickened edge measures .036. Not much increase in thickness -- but some. The clearance was not set high enough, so the edge was flattened a little, which thinned the edge back near what it was.
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You can enlarge these photos and see that there is only very light marking from the dies. The marks have now depth at all and amount nothing but a series of shiney areas -- not gouges or scratches.
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If your dies cause any gouging or scratching of the surface -- then your dies are probably not cut right -- or you don't have them alighned properly and/or clearanced properly.
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The transition area is the most difficult to get done smoothly. You can see here where the edge of the lower die dinged the transition area. This can be corrected by rounding off the edge of the die more.
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This shows where the edge of the lower die put just a slight ding in the flat portin of the panel. This could have been caused by puching down on the panel too much -- or by the edge of the lower die being too sharp. Rounding the die a little more and/or
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The arrow is pointing to a slight mark that was made by the outer edge of the thumbnail portion of the lower die. Rounding off that area of the die will help prevent this.
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"A" is where the highest point of the thumbnail made an imprint -- and "B" is an imprint from the outer edge of the lower die.
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Mvc-017f A little imperfection can be see on the flat portion.
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This is the indentation from the edge of the lower die. It can be corrected in just a few seconds with a few light taps from a planishing hammer (either hand or air powered). However, with a little practice and/or rounding off the edge of the lower die --




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