How to determine side and corner triangels
 

Here is my dilema. I need to figure out the size of my squares and I am putting sashing on the squares. I am putting them on point. Do I determine the size of the block with just two side of the sashing because the one sashing sews to another. Did I make this clear or are you confused. I have the math formula but I need to know the size of square first. I only did on point with block to block before and no sashing. Can you help?

Bonnie knows the answer to every question. Last paragraph applies here - http://quiltville.com/onpointmath.shtml

dunster, I have those instructions but I don't know is I count the sashing on only two sides because because the sashing down the middle of rows is attached to both strips. do I measure the square with only the sashing on two sides?

If in doubt, sew two together and measure it with a square ruler to see the size you need to cut. Then cut down the corner to corner middle. Include the quarter inch seams and the quarter inch on the bias edge to make it all fit. I bought one of those setting rulers for triangle setting blocks. It really makes life easier.

Yes, measure the square with the sashing on two sides.

Sashing is sashing. It is the total quilt that is then put on point after the blocks and sashing are sewed together. If you are putting something on point, then the concern is more the setting side (& top & bottom) triangles and the corner triangles.

Sometimes, when I can't seem to get the math right no matter how many times and how hard I try, I cheat.

I'd baste in a large triangle, trim it to size, then unsew and measure it. :thumbup:

Hi everyone, I figures it out, thanks for all your help. I do not have the quilt top sewn together yet but here it is on the design wall.[ATTACH=CONFIG]569472[/ATTACH]

This is the one you had questions about a day or so ago, isn't it? You have done a great job. It will be beautiful when complete.

It will be absolutely beautiful when you finish it. I love your flowers and butterfly colors.

WOW! That is going to be spectacular! Glad you settled on the on point pattern.

I hope before you sew the quilt together you turn the third row block up from the bottom on the right side the second block in from the right a half turn so the sashing is on the correct side. Beautiful quilt.

Beautiful quilt! I love all of the pretty colors with the black background. Great job!

Not sure if this helps, but, when my brain will not wrap around a measurement needed, I go to the graph paper. I draw out the section using 4 squares to an inch. I start with the piece I do understand and draw out to the piece I need. Then I count squares. It seems that when I have the numbers and drawing in front of me, it makes sense. And it seems that the older I get, the more graph paper I buy!!

I cut paper until I get the size that fits. I don't like math.

Lovely quilt. Jan in VA has a wonderful graph that shows how to cut those triangles to get straight grain on the outside edge, and straight grain on the outside of the corner triangles. They are cut differently. If you haven't done that with this quilt, maybe you could get those directions to have on hand for the next one.

Good catch! I always tell people to step back and admire your work as you go along. That will make it easier to find such boo-boos.