I am posting the method I am using to make my topquilt. I used this method to make my down UQ. Thanks for all the suggestions you have made.
When I was posting questions about making a topquilt, a few people asked that I take pics and document my steps.
Please add any suggestions to help someone else make their project go easier.
50" wide tapering to 40", 71.5" long
5" baffle spacing, top chamber 5.5", bottom 6"
1.75" baffles, bottom 2 baffles 2" (foot section)
1.1oz dwr ripstop from BWDD
.9oz mesh from BWDD
1.5" seam allowance all the way around
I made a full size template, marked my baffles and seam allowances.
I put the fabric on the template. You can see the lines underneath and I used them to cut the fabric to shape (I used a soldering gun with a small pointed tip, it cuts and seals the edges). An added benefit of the soldering gun is the slightly melted nylon sticks to the mdf template and keeps it from moving.
I then, I know...GASP...trace the seam and baffle lines with a matching color sharpie. Then repeat for the other piece.
The sharpie lines are just visible enough to see while sewing, and if you stitch over them they are about impossible to see.
There are other ways to do this but it works for me.
Baffles sewn to one side.
Sewing baffles to other side.
Baffles all sewn, 3 sides sealed up and ready to stuff.
Weight at this point is 211g / 7.4oz, so with approx. 11oz of down should be just under 20oz.