Quickie Q2 Lite Construction Manual - page 255
COWLING FLANGE CONSTRUCTION
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In this section, you will make the flange that attaches the
cowling to the firewall. This flange will fit around the entire
circumference of the firewall.
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First, use masonite, scrap plywood, or particle board to make an
accurate template of the firewall. This template will allow you to
form an accurate flange that will produce an excellent fit on the
cowling.
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Bondo the cowling to the template at the outside edge, so that
the cowling is draped like it will be when mounted on the firewall.
It is necessary to do only one-half of the cowling at a time.
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Next, using grey tape, protect two inches of the inside cowling
skin and 2" of the template inside surface, as shown. Laminate a 3
BID flange around the inside joint, overlapping 1 inch onto the
inside cowling skin and the inside template surface. Allow to cure
thoroughly to prevent future warpage.
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Repeat the process with the other half of the cowling.
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Remove the flanges from this simple "mold" and clean off the
grey tape from the cowling.
TRIMMING THE COWLING
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The cowling is shipped to you preformed and rough trimmed to
size. Final trimming can only be accomplished with the engine mounted