Originally Posted by catrancher
I wouldn't attempt paper piecing without the add a quarter ruler. It's a must-have tool, IMHO. Here's a video demonstration. I have all three sizes, and they are indispensible.
http://m.youtube.com/#/watch?v=Xv2gKMx9CCM
Just my opinion, but I think any ruler you have with a 1/4" measurement from the edge works. I know the 'add a quarter' ruler has a thin lip to go over the folded paper but I think the same results can be achieved with any ruler with 1/4 markings.
But, yes, pp'ing is the hot tip for precision, particularly with points.