Thank you! I am on a mission to get one.... :thumbup:

which is why I'm thankful for my totally mechanical old Bernina 830 :) No worrying about computers and magnets! But I must say, the seam guide is amazing!

When you have sewn all of your strip rows, iron every alternate row in the opposite direction before you cut the crosswise strips. Then each joint butts against the other and there is no need for pinning anything. I make these quilts all of the time without pinning and do not have a problem.

If you line up the seams then place a pin on either side of the seam and don't remove until you've sewn, I guarantee they will line up perfectly. I don't sew across the pins, I walk the stitches across by hand turning the wheel. Saves on broken needles.
I consider this the most important hint I've ever learned in quilting.

i have a friend who uses elmers glue. it washes out just fine.

It is easy to get the same effect by using a little pad of Post-It notes. Just pull off whatever thickness matches or exceeds what you are sewing together and then stick them to the machine bed where your fabric edge should be (an eighth inch, a quarter inch, a scant quarter, a half inch, five-eighths inch, whatever). Some people like a thicker guide, some people like a thinner guide.

They are cheap, the glue won't gunk up what it is stuck to and when you want to change it, they are easy to remove.

The way you use that 2" grid. It has fusible on it and you iron the squares on it and you don't have to pin it. They also have it in 1" size squares.

Look in Tutorials at the bottom of this page (under the Send square) for an excellent
tutorial by Izy "Easy Intersections".

Requires little pinning and works well.

Here's the link to Izy's "Easy Intersections" tutorial:

http://static.quiltingboard.com/uplo...4be69_2513.pdf

I am a pinner. It works for me and makes me a better sewer.
However, one must remember what else helps squares to line up like we want them to and that is cutting those little buggers accurately.
Always use the same ruler to cut all your pieces for a project. I always use the same rotary cutter too and make sure the blade is sharp. Put markers on your rulers so all of your squares are measured the same.
Luckily, I have not had a problem with my squares not aligning properly.
My motto: measure twice then cut once.
Good Luck!
Chris