I need some math help
#1
I need some math help
I am making a t-shirt quilt out of my old t-shirts. I am having a devil of a time with the math. I think I'm having a senior moment but it frustrating me to death. So here's the deal:
obviously various different sized blocks, need to finish to 15". So I take my block width measurement which is 7" subtract it from 15" which is 8, divide by 2 (for each side of block) and add back seam allowance of .50 (.25 for each side). But my measurements aren't working. So what am I missing.
TIA,
Bunny
obviously various different sized blocks, need to finish to 15". So I take my block width measurement which is 7" subtract it from 15" which is 8, divide by 2 (for each side of block) and add back seam allowance of .50 (.25 for each side). But my measurements aren't working. So what am I missing.
TIA,
Bunny
#2
Power Poster
Join Date: Feb 2009
Location: Northern Michigan
Posts: 12,861
what is not working? my thought---is the 7" (would need to be 7 1/2") if it only measures 7" then your finished size is 6 1/2" not 7...so you need to add 8 1/2" to get to 15 (+ seam allowance) so 9" = not 8 1/2"
i hope that helps.
i hope that helps.
#3
Junior Member
Join Date: Apr 2009
Posts: 203
Are you allowing for your seam allowance that will come off the 7 inch block? On your side pieces you will have to have a seam allowance on both sides of your side pieces also. I believe that you need a 4.5 piece, 7.5 t-square, and another 4.5 piece to equal your width of finished 15 inch block. If you cut your t-shirt blocks 7 inches it will finish at 6.5, so in that case your Pieces need to be 4.75 piece, 7 in block center, and another 4.75. I could be wrong, but this is the way I would figure it. Hope this helps.
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