[MR] Canvas Tent Upkeep

[Geffrei Maudeleyne]

Why not to use bleach on cotton canvas tents.

How to really determine poly/cotton content percentages:

Take extremely accurate (down to 4 decimal places) weight of finely shredded
material.
Boil such in chlorine beach. (Only do this under industrial chemical vent hood
using gloves and eye protection and an apron.)
The cotton totally, absolutely, completely dissolves. (my main point)
Filter off the bleach.
Let residual dry.
Weigh the remaining poly.
Do the math to compute percentages. Poly percent = poly weight/original weight.

Do not use bleach, at least in any significant quantity on cotton canvas tents,
especially in the sunshine on a hot day.

Geffrei