Sorry, but I'm sitting here chuckling. I'm thinking, well, $20 is $20. Seriously though, Aluma Hyde is probably the best kept secret. And yes, a couple weeks dry time is standard. Never tried the heat gun thing. BTW army surplus stores used to have this stuff cheap. Years ago found it at Lawlers (sp) in Bedford.I have had real good luck with this stuff but never used head. I know it takes longer to cure without heat.