Originally Posted by mesantacruz
I'm glad you found all this... and you know.. those trays look pretty sturdy... yeah... 18 dollars for a timer is kind of outrageous.
As an aside... those trays can be modified with a few minutes with a heat gun, if one were not comfortable with flat bottom as stated above.
Could you describe the process more in depth? What about putting a few plastic pieces/ marbles in the bottom of the tray to keep it off?