Ooh, I hadnt even thought of the fact that the machine might not cope with too many layers! I don't actually have a machine, was gonna borrow my mum's, so I definitely don't want to break that or I'll be in trouble!
I do like the design of the EH one though, unfolding to reduce drying time would be a big bonus as my 2 EP ones do take some time to dry on the airer so I only get to use them every 3 or 4 days which is not nearly as much as I'd like. So if I were to make the EH style with 3 layers, that'd make 5 with a little bit left over by my calculations (which are not great at this time of the day and after a glass of wine hehe) so still works out cheaper.
What is the material like for fraying? If it doesnt fray too bad, I could possibly roughly sew them together by hand with a sort of blanket stitch, do you think that would work?
Thanks for all the help, getting excited at the prospect now hehe.