I am not sure if this is a gear deal or not but I bought 4' of .003 titanium foil on Ebay for $12. It came to $15 with shipping but I was able to make windscreens for both my firelight 550 and evernew .9L, and have some left over for another project I have in mind. I wasn't sure if the .003 was thick enough but it is fine.
The seller had like 10 of them up.
Greg
Greg

