No affiliation but just came across a site where you can generate whole pages of geometric shapes in your desired dimensions for printing. Would be great printed on butcher paper for English paper piecing. There are many more types of paper also there that you can print and it is all free: http://www.incompetech.com/graphpaper/

that's such a great site. i'd seen it before, but did not think of using it as you described. so i've bookmarked it now. thanks for sharing

I used it to print hexis for GFG

Great site. Thanks for the link.

That's great! Thanks for sharing!!

Thanks for the tip! I now have it bookmarked!

Nice site & very useful too!!