removable mouldable material?
This might not be relevant to most of you, but I thought I'd ask anyways.
I like to work with rough boards and maintain their irregularities and imperfections throughout the building process. This makes it difficult to perform certain operations accurately because there's no such thing as a straight, square, or flat on these boards, and I don't want to mill away the original surfaces to make them so. For example I just made a table stretcher with long tennons on each end, and it was difficult to cut the tennons in-line with each other because the stretcher is crooked, twisted, and cupped. I had to eyeball it, and let's just say my eyes aren't that accurate!
So I thought, what if I could mold something that would harden like clay around parts of the boards to provide more practical "reference" surfaces to use while processing, and then peel the material off before finishing.
Has anyone heard of this being done before, or have suggestions for a product/process?