Bushcraft

Why did you put iron oxide in the mix?

Various recipes say it both dyes and adds to waterproofing by filling in the gaps in the weave.

Now that I think about it, I'm wondering if the weave was too loose to hold the particles. I wanted something lighter than a full weight canvas so I used a seemingly tightly woven linen tablecloth. I hot washed it to shrink/tighten it further before applying the treatment, but I've noticed I can still see light through the fabric.

We live and learn I guess. Bit of an expensive experiment, but it's an excuse to try again. I prefer the natural linseed colour to the red of the iron oxide anyway.