After making some stuff sacks, a groundsheet, and some synthetic insulated mittens, I decided to try making a quilt. I used 5oz Climashield Apex from Thru-Hiker for the insulation and some Argon fabric from Dutchware Gear for the inner and outer shells (0.67 oz per sq yd).
Here are the dimensions I used (note that I am 5'6''):

The quilt has a sewn-closed footbox, and the little square at the bottom is the "flap" I used to sew it closed. I cut the Climashield and the shells to those dimensions, adding about 1/2'' all around for seam allowances. Here it all is laid out together:

To save some weight and bulk, I decided to cut in half the Climashield that would end up under the footbox (notice the left and right areas near the bottom). Since I slip my sit pad in my footbox at night, I reasoned insulation there was mostly pointless. I hand stitched parts of it to keep the insulation from shifting over time.
I then sewed all three parts together (Climashield on top, the two shells on the bottom), and turned the whole thing inside out to get this:

Then I sewed up the footbox, added the top snaps (reinforced by 210D Oxford strips sewn on ahead of time), and did the drawcord channel. Here's the finished quilt:





Some of the seams aren't so straight and the footbox is a little goofy looking, but the quilt turned out to be a good size and should be 100% functional. Sewing the Argon fabric was actually not much more difficult than silnylon.
Finished weight of the quilt is only 14.1 oz! This is a little weird, however, because it is about 1-1.5oz less than I had calculated it to weigh. Before I sewed them together, the inner and outer shells weighed a total of 3.2 oz. I forgot to weigh the Climashield, so estimating that the drawcord, cord-lock, and snaps weigh 0.5 oz, that means the quilt has 10.4oz of insulation (almost 74% insulation by weight).
Very much looking forward to using this quilt! I have already ordered the Thru-Hiker Minima Vest kit to try and build next, and if I feel my skills have improved enough, maybe I will try my hand at a MYOG pyramid tarp after that.

