Buying pre-creased paper for tessellations

[joabaldwin]

A long time ago, I don't remember where, I saw an online store that offered paper with pre-creases either on square or triangular grids, which would save hours of folding (and be super precise) to make tessellations... Has anyone else heard of these or knows where to buy them?

I searched and searched and can't find them anywhere, no one seems to know of their existence even, but I know I saw them once and I always regretted not buying them.

Any ideas?

[Foldtastic]

I too am interested in this.