Would tung oil be enough to seal/protect this standing vegetable-growing bed from rotting or should I char the inside first? It's made from 2x4 pine CLS. If I need to char the inside first, can i just chuck some lumpwood charcoal in there or do I need to use a butane blowtorch?
If I need to use a blowtorch, any ideas how many cans I'll need given that the bed is 2' x 6'?
If I need to use a blowtorch, any ideas how many cans I'll need given that the bed is 2' x 6'?