Wanting to build a humidor...I have a few questions

[GWN]

It's very rewarding to build your own. Mine is far from perfect, but I'm happy with the result. Kinda like catching a trout on a fly you tied yourself.
The only thing that jumped out at me about your original post was the location. On the kitchen counter with glass doors would have me concerned about temperature swings and condensation, depending how the sun hits it.