I used a specailty ruler to make my pineapple blocks. It wasn't terrible but it wasn't easy and I had a bit of trouble getting the blocks matched up when I assembled the top.
An alternative means of construction is to use paper foundations. I recently discovered a source on Etsy for large paper foundations. Gigi's Thimble sells printed foundations that are just over 13" square. (You can see Amber's version of the quilt here.) Buying the foundations already printed means you don't have to do all the calculations for the block yourself nor are you limited to an 8" or smaller block. Of course, the over-size paper doesn't come cheap. I wanted to tell you about this because I get a lot questions asking if I know of a source for paper foundations for the pineapple block.
Does anyone know another source for pineapple block foundations?