Originally Posted by Kwiltr

Yes, I use a ruler on pretty much every project I quilt from placemats to king sized quilts. I quilt on both my Sweet Sixteen Sitdown machine and my Janome 6600P DSM with rulers using a ruler foot on both machines and a 1/4" thick template. The more I use it the easier it gets. I have a clear tape sandpaper grip on the back sides of the rulers to grip the fabric. I've learned that while you need to hold the ruler firmly in place, you don't want to have crushing pressure on it holding it down to the quilt as this makes it very difficult to move the quilt. If you relax you can move the quilt quite readily. It is a bit more challenging with a Sitdown or domestic for this reason, I.e. Getting the knack of moving both together. As mentioned earlier, you must control the ruler so it cannot get under the needle while stitching. I always make sure I have pressure on the edge of the ruler against the foot to make sure it won't hop up.
Take it slow and you'll be fine.