Triangle Sizes

[Hannelore N.]

Is there some formula for figuring out the size of the triangles when you want to set a block on point?

[Margo C.]

A Google search offers these sites and more:

http://quiltingpassion.com/triangles.html

http://reannalilydesigns.blogspot.co...-tutorial.html

http://quilting.about.com/od/quiltse...ngtriangls.htm

http://quiltbug.com/Articles/on-point.htm



I cut my setting triangles with the straight of grain on the long side of the triangle which means I start with a square, and cut in diagonally with an "X".
To know what size square to start with, I add 1-1/4" to the longest FINISHED side of the triangle to get the cut length of the square.

Here is a handy chart to determine the size square to start with:

http://www.rainydayquiltschool.com/o...ting_chart.htm

[Hannelore N.]

Whatever the formula, I always cut these setting triangles a little bigger and then trim them to the exact size after I have pressed them. I'm not the most accurate quilter and this way I get reasonable results.

And Margo forgot to add: Starch your fabric before cutting it into triangles if you want perfection.

[Margo C.]

Thank you Lorchen! Two excellent points!!

[Margo C.]

i think i solve the problem by jodi borrows method.