|Dado Blade Gauge
it comes to cutting a dado, nothing beats a stacked dado blade set. Like other
dado blade sets, mine comes with a 1/32" chipper (in addition to the standard
1/16" chipper). This gives me a lot of choice when it comes to "tweaking" the
fit of a dado. Especially when cutting dadoes to accept "off-size" thicknesses
The problem is it takes awhile to find the exact combination of chippers needed
to produce a good fit. So I use this handy gauge to tell me at a glance which
chippers to use, see drawing. The gauge is nothing more than two glued-up pieces
of ¾"-thick plywood with a series of dadoes cut in it - one for each different
width of dado that I can cut with my blade. The combination of chippers required
to cut each dado are labeled underneath.
Using the gauge couldn't be easier. Simply test fit
the plywood (or other workpiece) in each dado until you find the one that produces
the best fit, see photo. Then read the label to get the right combination of chippers.