Weezy Rider

I need a couple of 1/4 square triangles for fillers. I changed a pattern to standard sizes as I wanted to try out a couple of Sizzix dies. The squares in the pattern were something like 2 5/8 to cut or another weird size.

I changed to 2 1/2 - Slow going to fix the changes but working. I know you need to add so much to a square to cut triangles. What do you need to add if you want quarter triangles? I cut the triangles on a Sizzix so I'd have to have the formula for quarter triangles for a 2 1/2 cut or 2 inch finished block. Cutting the half triangle is a little short.

Next time I'll shove the design in Electric Quilt and let IT do the math!

I'm just a trifle annoyed with odd sizes designed to get you to buy new rulers.

citruscountyquilter

You need to add 1 1/4" to your finished size but I usually add a bit more and trim my triangles to get a more exact triangle. For example for HST you are supposed to add 7/8" and I always add at least 1" and trim. For QST I'd add 1 1/2". There is some waste but very little and it is worth it in the end.

bearisgray

I agree. I need that little bit "extra" in the cut piece. I ALWAYS end up with skimpy units when I cut the square to the "exact" mathematical requirement. I would much rather trim off 1/32 to 1/16 of an inch and have an adequate unit than have it be short that much.

dunster

Those "odd sizes" are not designed by anyone. It's just the mathematics of the situation. And adding 7/8" or 1.25" can be done with any ruler. But I agree with the others - I add a bit more and trim down, because my seam is seldom exactly at the right place.

Weezy Rider

Where do you add the 1 1/2? Sounds weird, but I cut a bunch of extra 2 1/2 inch squares and would like to cut the 1/4 triangles from those. I also have a lot of HSTs. How would I cut those down? If I make a template out of the size I need, can I just add 1/4"? I don't need that many - 10 or 12 at the most. The rest are HSTs and already cut