Use parchment.... It avoids that problem.
Where did you buy the lye? Why was it difficult to type 'buy the lye'?
First, haha!
Bought at AAA chemicals, Food Grade Sodium Hydroxide. A single 2# container ($7) will last a long time, but if you want a visit from Homeland Security try buying a barrel.
http://www.aaa-chemicals.com/sodium-hydroxide.html