Reply by OggieOglethorpe

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Posted on Methods and devices for accurate table saw blade and router bit height measurement.

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1276 posts in 2135 days

#1 posted 08-23-2012 06:13 PM

Same with Bill….

Set the blade extension to my depth of cut, put the end of the blade against the table or sled floor, and raise the blade or bit until it makes contact. It usually helps to rock the blade or rotate the bit and listen / feel for a scrape.

On another note, I usually don’t see it as all that big of a deal if my 1/2” deep dados are 31/64, 1/2, or 33/64 deep, as I cut them all at once.

For those occasions like lock miter or cope and stick bits, that need a precise setting, once it’s perfect, I’ll normally make a UMHW or MDF setup block for next time.

Yet another thought is to make sure any sleds you use have floors that ride on the surface of the machine, not the bottoms of miter slots. If a sled rides in the slots, varying operator pressure can affect dado depth.

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