Go Back  Quiltingboard Forums > Main
I have a 12 pattern but need the finshed block to be 12.5 >

I have a 12 pattern but need the finshed block to be 12.5

I have a 12 pattern but need the finshed block to be 12.5

Old 02-11-2013, 09:17 PM
  #1  
Senior Member
Thread Starter
 
Join Date: Sep 2012
Location: Springfield, TN
Posts: 622
Default I have a 12 pattern but need the finshed block to be 12.5

I need to increase the finished block to be 12.5 but my pattern's finished block is 12. What do I need to add to each individual peice to get it to end up to measure 12.5? 1/4 seams.
queenof2802 is offline  
Old 02-11-2013, 09:32 PM
  #2  
Super Member
 
Join Date: Mar 2010
Location: Anchorage, AK
Posts: 1,346
Default

My first response is to clarify the 12.5 finished block..never heard of one that size before. If, in fact, it is 12.5 finished, it would be easier to give you ideas if we knew what the block was - can you provide a photo or give a name? with some blocks you can just add the extra half inch but to others you need some really small corrections to all the pieces.
ktbb is offline  
Old 02-11-2013, 10:23 PM
  #3  
Power Poster
 
Join Date: Dec 2008
Location: Western Wisconsin
Posts: 12,930
Default

It is impossible to answer that question without knowing which block it is.
Prism99 is offline  
Old 02-12-2013, 02:10 AM
  #4  
Super Member
 
Join Date: Sep 2010
Location: Brisbane, Aust
Posts: 1,498
Default

Does a 1/2"on each block make that much difference? If you need the quilt a certain size you can put on wider borders.
rebeljane is offline  
Old 02-12-2013, 02:57 AM
  #5  
Power Poster
 
Join Date: Feb 2009
Location: Northern Michigan
Posts: 12,465
Default

blocks very seldom (finish) as a 1/2"....the 1/2" is the seam allowance before being joined with other blocks/sewn into the quilt...we would need to know the block to figure out the math for it- but (basically) to enlarge (or decrease) the size of a block you first subtract the seam allowance amount- then increase or decrease as needed- then add the seam allowance back in---an example...if you wanted to double the size of a block with pieces that are 2 1/2" to start- you would subtract the seam allowance (now 2") double it---to 4" then add the seam allowance back on- so cut 4 1/2".
ckcowl is offline  
Old 02-12-2013, 03:27 AM
  #6  
Super Member
 
Join Date: May 2007
Location: NE Pa.
Posts: 1,738
Default

I agree with ktbb, never heard of a block finished size 12 1/2 Are you sure that is what you are looking for.
mic-pa is offline  
Old 02-12-2013, 04:58 AM
  #7  
Senior Member
 
Rebecca_S's Avatar
 
Join Date: Jan 2011
Location: Boston
Posts: 347
Default

It depends a lot on what block it is, how many seams and if there is a center element, etc. For example for a log cabin you could enlarge the center block 1/2 inch and then adjust the length, but not width, of the remaining logs. For a 9 patch I personally would enlarge each block by 1/8 inch and then fudge it so that you used a 12 3/8" block but that is probably cheating.
I've drafted blocks that were 12 3/8" finished for a special project but agree that 12 1/2" finished is an odd size.
Rebecca_S is offline  
Old 02-12-2013, 05:48 AM
  #8  
Power Poster
 
Join Date: Dec 2010
Location: Michigan
Posts: 11,235
Default

I agree with the other posters. 12.5" block is a very odd size. Depending on the block itself, you might wind up adding 1/8" or 1/16" or 0.0023467" to the pieces, which would make it difficult to cut. That's why we would need to either see the block or have the name.
If you are going with the 12.5" size to fit a particular space or bed, I would consider adding an additional row of blocks, a border on the whole quilt or add a narrow sashing (1/2"), or increase the sashing than you planned by 1/2".
PaperPrincess is offline  
Old 02-12-2013, 05:56 AM
  #9  
Super Member
 
Join Date: Sep 2011
Location: Southern Indiana
Posts: 5,046
Default

I have the book 501 Rotary Cut Quilt Blocks and there are several patterns in it that finish at 12 1/2, some 13 1/2 and even 12 1/4
Jackie Spencer is offline  
Old 02-12-2013, 07:59 AM
  #10  
Super Member
 
Join Date: Oct 2010
Location: howell, Mi
Posts: 2,345
Default

Can you add sashing to make the block 12 1/2"? That would be easier if there are a lot of pieces in the block.
Sue
susie-susie-susie is offline  
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
RedGarnet222
Pictures
81
02-05-2011 04:35 PM
tmg
Pictures
39
07-08-2010 08:22 PM
tmg
Pictures
14
06-26-2010 01:58 AM
Pinkrose4664
Pictures
63
02-01-2010 06:02 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.