Picture Framing Tools
Measure the artwork, mat window and frame opening
Measure the print and the frame before choosing a cutter. The opening you see from the front and the board that fits behind the frame describe two separate rectangles.
Start with the actual print
Use the sheet you intend to mount. If the image has its own border, decide how much of it you want to show. Mark the four edges of the proposed opening on scrap so you can see whether a signature or important detail gets covered.
Measure the recess behind the frame
The rabbet is the recess that takes the glazing, mat and backing. Measure where the outer mat will sit. Compare the depth with the thickness of the complete stack before buying a thicker mat or adding a spacer.
Choose the tool for the longest supported cut
Check the working span and which edge of the board must pass through the tool. On a board-mounted cutter, the published capacity can refer to a specific place on the base. A handheld cutter depends on the straightedge and support you provide.