Quoted from vid1900:I cut about 3/8" before the corner, otherwise the decal will be chewed up in a hurry.
You can use a piece of 3/8" clear plastic corner molding as a guide.
Ok Vid, do tell.... when using a circle guide like that, how the heck do you manage to do it without accidentally cutting the guide??
I've tried that a few times for cutting circles, but even the tiniest nick in the guide makes it useless. This last weekend I got all frustrated and went into town and started buying large flat washers, so I had something to use as a guide that wasn't going to get all cut up by my blade. Took my plastic circle guide in and used that to help find a set of washers with the most common inner-diameter hole sizes. Haven't tried them yet, but I'll find out when I get back from vacation with the family in a few weeks, and manage to get back into the pins here...