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Posted by Leslie & The Furbabies in MO. on August 14, 2008, 2:56 pm
Be certain that you are holding the blade of the cutter exactly
perpendicular to the ruler and not at an angle. Be certain you are standing
directly over the ruler and not looking from one side or the other-
squinting- or closing- one eye as you line up the ruler can make a
difference, too And make sure the blade is snug in the cutter but still
rolls freely- snug down the nut and then run it along your mat with light
pressure to make sure it is turning then adjust as necessary.
But my first impulse was to say to adjust your seam allowance. For machine
piecing your seam allowance should be a thread or two less than a true 1/4
in.- the so-called scant 1/4 in. Your stitch length and tension adjustments
can make a difference in how much fabric your stitching 'eats up' into the
seam allowance as well. Check how you press- pressing to one side can take
up a tiny pleat in the fabric- pressing seams open usually doesn't do this,
but it is possible to create a tiny pleat on *both* sides with pressing it
open!
The fact that you are so very consistent in the amount you are off tells me
you are doing everything right, so I'd blame the seam allowance. Congrats
on the consistency- that's a biggie! If you were all over the place or only
short in one direction there are a lot of different possibilities, but this
will be much easier to correct!
Leslie & The Furbabies in MO.
> well, felwyn, i measure from the left hand side of the ruler. that is
> to say, i trim the left side of the selvage from the fabric i'm using
> to make it even, then use the same side to put my measurement on,
> cutting on the right hand side of the ruler edge.
> it seems to come out more accurate for me.
> some people cut the right hand side of the selvage and move the ruler.
> i find this shifts the fabric too much and mistakes happen.
>
> JMO
> amy in CNY
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