Using the right amount of blade depth on a mat cutter is
probably the most crucial area to recognize in achieving good
mats. It's also one of the most over looked areas. Excess blade
depth can cause a number of problems that appear unsolvable
unless you know what to do. Below are some typical symptoms of
excess blade depth.
| |
Problem |
Cause |
|
Hook or
curve in the beginning of each cut only. |
The initial
plunge of the blade into the mat board is causing the blade
tip to flex outward and immediately go back to a straight
position once cutting begins. This is caused by too much
blade extending out the bottom of the cutting head. |
|
Long curve
in length of cut |
Excess
blade depth allows the blade to flare outward during the
entire cut resulting in a long curve from one corner to
another. This is caused by too much blade extending out the
bottom of the cutting head. |
|
Over cuts
(blade cutting past each corner with visible mark) |
Because of
excess blade depth the start and stop indicator line on the
cutting head is no longer accurate. Using it causes the
blade to start its cuts sooner and stop its cut later than
needed resulting in cuts that go past the corners. This too
is caused by too much blade extending out the bottom of the
cutting head. |
|
Blade tip
breaking off |
Because of
excess blade depth the initial plunge of the blade into the
mat board is applying too much stress to the blade tip
causing it to break off. |
|
Cutting
head hard to pull |
Because of
excess depth, the blade is cutting easily through the
thickness of the matboard but far too deeply Into the
backing board. This extra material cutting adds more
resistance to the cut. |
| |
Blades
dulling too quickly |
Although
the cutting life of a blade is difficult to predict,
unnecessary excess blade depth certainly dulls a blade
faster than usual. Proper blade depth ensures the longest
life possible from a blade. |