Will a clear matte take to bare metal and eventually start to peal?
Rust OLeum spray can of 2X Ultra Cover Matte Clear will stick to
about most anything you spray it on.
The trouble with spray cans, is the recoat-time listed on the back
of each can.
Small things can be done by the manufactures recoat times listed
on the back of the can. (recoat within 30 min OR wait 24 hours).
BIG things are a lot harder to keep the recoat times on.
If you recoat in an hour or two or five, you can get paint wrinkles, so
read the recoat times listed on back of the spray can.
Also, temperature and humidity has a lot to do with how well
spray paint turns out.
I've Never tried this product listed below, but sounds like it is pretty
easy to use, and sticks to most everything you spray it on, and lasts
quite a long time. Might just work for what you want to do.
https://carcarereviews.net/nexgen-ceramic-spray.php
.