This thread hasn't been posted on in a while but I wanted to thank all who have posted and contributed, without it my Herr P-51 would still be without a cowl. I made a small machine and use my Shopvac for suction. I made 3 attempts and the final was perfect. The first didn't pull tight enough and I had to drill small holes for added suction in the chin area. I tried to use thin "blister pack" material but the end result was far to flimsy. The final pull was done with approx .040 clear plastic, unknown type as I had it laying around my shop for over 10 yrs now.

Thanks again for all who posted!

God Bless,

Jay