Go Back  Quiltingboard Forums > Main
Math for half square triangles >

Math for half square triangles

Math for half square triangles

Old 12-28-2009, 07:35 AM
  #1  
Super Member
Thread Starter
 
quilter1's Avatar
 
Join Date: Apr 2009
Location: Ayr, Ontario
Posts: 1,059
Default

I want to make an applique wallhanging featured in the current issue of Quilter's Newsletter. It uses 184 half square triangles cut by hand but I want to use the Fons and Porter ruler so I don't have to sew all those bias edges. My question is: the block size is supposed to be 2 3/8": what size do I cut my blocks to use the Fons and Porter ruler? Is it an extra 7/8"? That would make my cuts at 3 1/4"? Thanks in advance for the help.
quilter1 is offline  
Old 12-28-2009, 07:39 AM
  #2  
Super Member
 
Join Date: Aug 2009
Location: The middle of an IL cornfield
Posts: 7,014
Default

I do HST by adding 1 inch to the finished block size. Draw a diagonal line and then sew 1/4 inch from each side of the line. Cut along the line and then square up as needed.

Many sites say to add 7/8 inch but I hate working with odd measurements so I just add 1 inch.
Lisa_wanna_b_quilter is offline  
Old 12-28-2009, 02:02 PM
  #3  
Power Poster
 
cutebuns's Avatar
 
Join Date: Jun 2007
Location: middle of a farmer field
Posts: 14,840
Default

To do HST you do add the 7/8 for an accurate measure, and so it is 3 1/4 in.

I don't have a fons and porter ruler so can't help you with that part.

but these measurements will give you a 2 3/8th's block. I wold test it out on one or two blocks to make sure that they come out the size that you would like,
cutebuns is offline  
Old 12-28-2009, 02:55 PM
  #4  
Super Member
Thread Starter
 
quilter1's Avatar
 
Join Date: Apr 2009
Location: Ayr, Ontario
Posts: 1,059
Default

Thanks for the help, I knew I would find the right help here. Wish me luck with the challenging quilt.
quilter1 is offline  
Old 12-28-2009, 02:55 PM
  #5  
Power Poster
 
cutebuns's Avatar
 
Join Date: Jun 2007
Location: middle of a farmer field
Posts: 14,840
Default

Good Luck!!!!!!!!!
cutebuns is offline  
Old 12-29-2009, 11:53 AM
  #6  
Power Poster
 
amma's Avatar
 
Join Date: Jul 2007
Location: Out searching for some sunshine :-)
Posts: 58,857
Default

Originally Posted by quilter1
I want to make an applique wallhanging featured in the current issue of Quilter's Newsletter. It uses 184 half square triangles cut by hand but I want to use the Fons and Porter ruler so I don't have to sew all those bias edges. My question is: the block size is supposed to be 2 3/8": what size do I cut my blocks to use the Fons and Porter ruler? Is it an extra 7/8"? That would make my cuts at 3 1/4"? Thanks in advance for the help.
That is an odd size for a block... I haven't seen that size for a block before. That would make the cutting a nightmare for me :oops:
amma is offline  
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
Glenda m
Pictures
45
10-10-2014 11:52 AM
LucyInTheSky
Main
10
04-16-2012 11:57 AM
sondray
Links and Resources
0
07-11-2009 04:57 PM
sondray
Links and Resources
0
04-16-2009 05:01 AM

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is On
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


FREE Quilting Newsletter


SEO by vBSEO ©2011, Crawlability, Inc.