How I sublimate a 20 oz tumbler

This is how I wrap, bake and unwrap sublimation tumblers
I get my tumblers from twelvebeescust....
The designs I either create myself or get from Etsy.
The tape is just the wide masking tape.
The heat tape is Cricut brand and I hate it but want to use up before getting a different brand.
The convection oven I picked up at a pawn shop for like $80.