DIY herb dryer no card board boxes

Budzbuddha

Well-Known Member
The term "porous" applies to a substance that has holes, or openings on its external side. Porous materials are a group of substances with moderate density, great distinct surface and a variety of unusual characteristics in the physical, automatic, and acoustical fields.
Paper, cardboard, sponges, pumice stones, untreated wood, and cork are a few examples of porous materials.

Varnished wood is non porous. 1 layer of my 6 ply is thicker than your cardboard.
Great google skills +1

But do you understand it ?
Now you just are saying you will varnish - so VOC gas off wont be an issue with buds ? Sounds killer.
 
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