Salty Thumb in
news:76SZc.4319$Ep4.3184@trnddc01:

thanks for info. why did you insulate? everything I've seen says to
ventilate. I assume the temps when closed would be similar to that of
a parked car with windows up.

it's not easy to keep the top surface of the mix moist. maybe putting
the mix in closed metal pans solves the problems?

I don't understand ... i was just thinking of sterlizing pots (without
soil) during the end of summer for use during winter for seed
starting.

i should have said that my goal was to pasteruize mix. the pots were
semi-incidental (except that often teh pasteurized mix was to be used IN
those pots)
also,and


all "parts" were from dumpsters or from leaning next to dumpsters.
the box was a wood crate that had shipped some equipment. its dimensions
were, (all dims approx): 3.5x2 ft x18"deep. scrap styro (1"? thick) was
cut and pushed into place on inside of crate. corrugated cardboard was
pressed into place against the walls of this cavity. i don't recall if i
cut th cardboard, or any other detail of the cardboard.

i had a pane of glass set upon the top opening. i tilted the top of the
box slightly toward south. the pane needed dust washed off sometimes
(necessary a few times a year?) i think the location received most of
the day's worth of direct sunlight. i could get high temps in the box
during other seasons besdies summer (regular temps range mid 80's,
mid/upper 90's fahrenheit)