I have had several PMs regarding the Reflectix pot cozies that I've made for my BPL SUL pots. While eating from my pot I have noticed that the sides of the cozy are warm. It occurred to me that I might lengthen the sides of the top to provide a double layer, increasing the efficiency.
I decided to make a new lid for my Firelite SUL1100 cozy and take photos of the process. Making the cozy body uses the same process, so you can see how it's done.
Firelite SUL1100 with original, short lid, cozy.
SUL1100 and original cozy bottom.
Reflectix and required tools.
Measure cozy sidewall and allow for thickness of top.
Use straightedge to mark cut line.
Roll Reflectix around pot/cozy and mark for cutting length.
Place Reflectix Tape allowing 1/2 tape width for join.
Next, tape inside of joint.
With cozy body on pot, mark cut line for top.
With cozy on pot, slide lid on, leaving lip for thickness of top.
Place strip of Reflectix Tape around perimeter of cozy, leaving 1/2 of tape strip exposed.
Notch exposed edge of tape.
Pull tape tabs over and fasten to top piece.
You now have a Reflectix pot cozy.
I found that I had to trim the sides of the lid up about a half inch to allow for gripping the bottom, in order to remove to lid.
I weighed the cozy bottom and, just constructed, lid for the SUL1100, it was 1.37 ounces. Smaller pots will have lighter cozies. In comparison, Sara Kirconnell's pint sized cozy weighed 1.27 ounces.
I hope this thread will inspire those teetering on the edge, to get out there and MYOG. It's fun and you'll have fellow backpackers asking where you got that cool stuff.