Laser Thickness and Kerf

kerfs
If you are looking to create a laser cutting project with interlocking parts, it’s important to keep a few things in mind:

Actual Thickness vs. Nominal Thickness

Sometimes material may be nominally 1/4” thick, but in reality is 6mm (or .2362”) which is slightly thinner than 1/4”. When making components that slot or lock together, this is important to take in consideration. An extra 1 or 2 hundredths of an inch in either direction can make a big difference.

Laser Kerf

Material Thickness Average Kerf Actual Thickness
Acrylic 1/16″ 0.007″ 1.5mm(.060” )
Acrylic 1/8″ 0.009″ 3mm(.118” )
Acrylic 1/4″ 0.01″ 6mm(.236” )
Birch Plywood 1/8″ 0.008″ 3mm(.118” )
Birch Plywood 1/4″ 0.01″ 6mm(.236” )
Museum Board 2 Ply (1/32″) 0.003″ 1/32”
Museum Board 4 Ply (1/16″) 0.005″ 1/16”

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