Go Back  Quiltingboard Forums > Main
Accurate rotary cutting on cutting mats.. can you help me? >

Accurate rotary cutting on cutting mats.. can you help me?

Accurate rotary cutting on cutting mats.. can you help me?

Old 08-24-2010, 08:35 AM
  #1  
Senior Member
Thread Starter
 
sewhappy30's Avatar
 
Join Date: Aug 2010
Location: West Virginia
Posts: 432
Default

My question... When cutting on my mat, the line's are thicker than my rotary blade of course, so after I have everything lined up do I put my ruler on the line or on one of the sides of the line to get the accurate measurement I need.

I find myself doing different each time, that's why my measurements are off I'm sure.

I know this is probably not clear what I'm trying to ask, but if someone understands and knows which way is accurate please tell me.

For example: If I need to cut it 15", which way would be the most accurate to get that? On the 15" line or on the side of the line, and if on the side, which side right or left?

This is something I've struggled with for a long time. If I knew the right way to do it, it would make my sewing life so much easier. Help!
sewhappy30 is offline  
Old 08-24-2010, 08:38 AM
  #2  
Moderator
 
kathy's Avatar
 
Join Date: Nov 2006
Location: on the Texas Coast
Posts: 4,020
Default

EVERYONE will tell you, "do not use the lines on your mat for measuring" they are good for keeping your fabric straight but use the same ruler to do your measuring.
kathy is offline  
Old 08-24-2010, 08:38 AM
  #3  
Super Member
 
Join Date: Feb 2010
Location: Tennessee
Posts: 1,214
Default

I know exactly what you are saying. I have struggled with the same problem every time I cut. I am anxiously awaiting the answer. Thanks for asking.
Granna of 5 is offline  
Old 08-24-2010, 08:38 AM
  #4  
Senior Member
 
crawford1219's Avatar
 
Join Date: Apr 2010
Location: Elizabethtown, KY
Posts: 749
Default

I think any of those ways would be ok as long as you are consistent each time you made a cut. For example, always lining each piece up to the left side of the line-that way all the pieces are from the same spot and should be more accurate.
crawford1219 is offline  
Old 08-24-2010, 08:38 AM
  #5  
Power Poster
 
Join Date: Oct 2009
Location: Idaho
Posts: 11,375
Default

Are you saying that you line your fabric up with the lines on the mat? I don't use the lines on my mat, I always use the lines on my rulers.
Sadiemae is offline  
Old 08-24-2010, 08:45 AM
  #6  
Senior Member
 
kapatt's Avatar
 
Join Date: Aug 2008
Location: Washington state
Posts: 820
Default

There are a couple of things that can make a difference in your cutting. I've found that using rulers from different manufacturers can cause problems. If you have rulers from different manufacturers, check them out to see if their lines line up with each other. Also, mats are not always equal in distance between lines when compared with rulers. I only use the lines on the mats to make sure that my material is sitting straight on the mat. I always use my ruler for measuring. How you hold your rotary cutter can make a difference. My quilting buddy tilts her blade in towards the ruler. I have my blade up next to the ruler (not tilted). That can make a difference. (Consequently, we don't cut strips for each other because of how we hold our cutter.)

The thickness of your needle and the thickness of your thread can make a difference when you press your seams one way or another. Make sure you are consistent with which machine you use and what thread you use.

You asked about where to put the ruler on the material...on the line or to one side...I honestly think it doesn't make any difference as long as you do it the same way each time you cut. I tend to put it right in the middle of the line but they may just be me.
kapatt is offline  
Old 08-24-2010, 08:51 AM
  #7  
Junior Member
 
Bobbin along's Avatar
 
Join Date: Aug 2010
Location: Denver
Posts: 233
Default

I turn my mat to the blank side, then square up the edge i plan to cut from. I take a ruler and lay it somewhere near where i think I will be making the cut, Then i take a smaller ruler, lay it perpendicular to the other ruler on the fabric, and measure over from the cut edge to the bigger ruler to get the exact measurement. check the measurements up and down the edge ("measure twice, cut once") and cut along the big ruller. Don't know if that makes sense or not, but it is a lot more accurate than using the line on the mat. Good luck!
Bobbin along is offline  
Old 08-24-2010, 08:59 AM
  #8  
Senior Member
 
kapatt's Avatar
 
Join Date: Aug 2008
Location: Washington state
Posts: 820
Default

I just wanted to add that when you sew on your quilt, you should first do a test-strip to make sure that your settings on your sewing machine, your cutting and your pressing are accurate. To do that, you should cut two or three pieces of strips equal width, sew them together and then press them. See if the test strips come out at the right width. If they don't, then make the adjustments you need to make so that they are accurate.

Example...take three 2" strips and sew them side-by-side. After ironing they should measure out to 5 1/2 inches wide.

Because of all of life's happenings, it can take me forever to finish a quilt. I make periodic test-strips throughout my quilt making process just because the settings can be messed with or changed without me realizing it.
kapatt is offline  
Old 08-24-2010, 09:07 AM
  #9  
Power Poster
 
Join Date: May 2008
Location: MN
Posts: 24,386
Default

Originally Posted by kapatt
I just wanted to add that when you sew on your quilt, you should first do a test-strip to make sure that your settings on your sewing machine, your cutting and your pressing are accurate. To do that, you should cut two or three pieces of strips equal width, sew them together and then press them. See if the test strips come out at the right width. If they don't, then make the adjustments you need to make so that they are accurate.

Example...take three 2" strips and sew them side-by-side. After ironing they should measure out to 5 1/2 inches wide.

Because of all of life's happenings, it can take me forever to finish a quilt. I make periodic test-strips throughout my quilt making process just because the settings can be messed with or changed without me realizing it.
I think one would be aiming for a five inch wide piece, not a 5.5 inch piece.
bearisgray is offline  
Old 08-24-2010, 09:13 AM
  #10  
Moderator
 
Join Date: Mar 2008
Location: North East Lower peninsula of Michigan
Posts: 6,230
Default

With 3 2 inch strips sew together you will get 5.5 until! you sew it to the next two pieces. It is 5 inch finished but will measure 5.5. Clearer? You start with 6 inches sew 2 1/4 inc seams so loose a half inch.
Up North is offline  
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
dray965
Main
40
05-22-2016 05:05 AM
bearisgray
Main
57
07-24-2013 08:50 AM
Hockeyrabbit
Main
44
02-27-2012 06:40 AM
Frolfsen
Main
17
10-24-2011 10:21 AM
moonhoney2
Main
43
05-31-2008 12:37 PM

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