Yeah, that's the crucial question in the estimating.
Here are some other issues.
She claims 2 yards of tie-off for every 4 yards of fabric, in both the warp and the weft. You only weave 4 yards before re-warping?!? Bullshit. And you don't use tie-off at all on the weft, as I understand it. So instead of 33% of thread being wasted to tie-off, I think 0% is a close approximation.
On the other hand, if I read the post correctly, it claims that there are 72 inches in 6 yards. So increase the thread requirement by 3x!!!
If I'm correct about both of these errors, a better figure would be 879 hours. Yikes.
Here are some other issues.
She claims 2 yards of tie-off for every 4 yards of fabric, in both the warp and the weft. You only weave 4 yards before re-warping?!? Bullshit. And you don't use tie-off at all on the weft, as I understand it. So instead of 33% of thread being wasted to tie-off, I think 0% is a close approximation.
On the other hand, if I read the post correctly, it claims that there are 72 inches in 6 yards. So increase the thread requirement by 3x!!!
If I'm correct about both of these errors, a better figure would be 879 hours. Yikes.