<html><div>What should be an easy question about an old technology...</div> <br> <div>How were the instrument panel identification plates made for our '46 model planes?</div> <br> <div>Mine are weathered, have been sprayed over and show the ravages of time and abuse.</div> <br> <div>They appear to have been made by some silk screen method of first applying a resist material on the letters and border then etched with some (acid perhaps) that removed some of the aluminum and left the etched surface black. The black feels recessed from the aluminum colored letters. That is my best guess as to how they were made.</div> <br> <div>I missed the chance to ask when he was at the Bowling Green Coupe convention, but I am sure others know. It looks like a typical identification plate of the era.</div> <br> <div>I have asked the chemist at the lab where I worked, and others and they have no idea what the etch material was.</div> <br> <div>So, the question is, 1) is my assumption of silk screen and resist correct, and, 2) what was the etching and blackening chemical used??</div> <br> <div>THanks,</div> <br> <div>Joe</div> <BR>
Joseph Loomis<br> Ercoupe 415 C, <b>N93712</b>,=A0<br> S.N. 1035, (April 8, 1946)<br> 4836 W. Whitehall Rd.<br> Pa. Furnace, PA 16865<br> 814-237-2569 </html> --------------------------------- to unsubscribe send mailto:[EMAIL PROTECTED] _____________________________________________________________ Want to find the best email lists? Check out the Topica 20! http://www.topica.com/topica20
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