just finished my first bellows - yep, its a chore indeed - especially a pyramid style (non-square) type - if your doin it mathematically there is only one other duplicate of each strip - takes aaaages to cut them all - the forming of the 'connection' in the bellows was the real PITA for me...

take your time, and think about eveything thrice, especially before you cut anything...

my second will be much better as I now know some tricks ...

you've prob made yours by now ? anyway its good info for others (;

good luck !