My wife and I made a 12" x 24" sign for a family friend. The sign was the typical type where you cut the letters out and attach them to a backer board. It was suggested that I lightly engrave the outline of the letter on the backer to make assembly easier. It was a challenge to get it all lined up before engraving. Even after setting it up and quadruple checking the engraved lettering still was skewed about 1/8 to 3/16 from level.
Are there any tips to get the material aligned and square when doing things like this? Is there a better way to place letters?