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Old 02-09-2016, 12:45 AM
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MotoMike43 MotoMike43 is offline
MetalShaper of the Month March 2016
 
Join Date: Sep 2012
Location: Chester County, PA
Posts: 57
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Quote:
Originally Posted by John Buchtenkirch View Post
Mike, nice professionally done video. I do the paper patterns with the magnets and fingers cut just like you do but never would use a radius gauge. Once I have the paper fingers lying flat on the panel I dust coat them with fast drying black Krylon. Yes, all my magnets do have many coats of Krylon on them. When I lay my paper pattern on the sheet I can tell by the un-painted parts of the fingers how deep to pull the shrinks plus the width of the un-painted paper gives you a pretty good idea of how much to shrink & where. I mark ¾” out from where the un-painted portion of the finger stops because I learned at Scott Knight’s class that thumb nail dies will shrink ¾” out in front of where you stop going into the panel.

I also mark blank cutting lines with pin-striping tape and sometimes even use flexible magnetic guides for pin-stripers but again I just dust coat them with dark Krylon. I only need the accuracy of a scribe line when I’m joining 2 panels together. ~ John Buchtenkirch
You are correct. Thumb nail dies do shrink in front of the formed tuck but 3/4" is not a standard #. All thumb nail dies are different and you must learn your sets individually. You can see the effected zone in front of the tuck. It forms a shadow and then lifts the panel directly in front of that. That will ultimately become your light line. You need to make test panels for each set of dies. Draw a straight line on the panel and run shrinks up to that line and hit the mark 100% accurate. Then look at the panel with a reflection and mark the raised spot just in front of your original mark. Measure the distance between your stopping point and the rise. I have sets as small as 1/8" and up too 5/8". I know from this when I pull in my initial shrinks that I must stop my shrink this set measurement short of where I want the panel shrink to stop.
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