TIP: Placement of stamps without a grid block

To place a stamp straight on an acrylic block that does not have grid lines, do the following:
Place the acrylic block on a cutting mat, aligning the bottom end to the rule at the base.
Place your stamp now so that it aligns with one of the grid lines on the cutting mat.
If you use the edges of the acrylic block now to 'eye-ball' the placement of the stamp, the odds are in your favor that it would be more straight.