I have a cat ketch with 85 & 69 SF of sprit-boom sails. Any ideas on what weight canvas would have been used in the old days for this size and type of sail. You can get Egyptian colored natural cotton canvas for painting in various weights and it is really cheap. Around $75 to do my sails. Would cost over $500 to get egyptian dacron. I know there are big advantages to newer materials but as one who would like to take a stab at sailmaking, the canvas seems like a good way to get started. Any thoughts?

Also, are there any good books on traditional sailmaking that I should be looking at besides the sailmakers apprentice?

Also, anyone know about dying or treating for tanbark color?

Thank you in advance.