We have also heard of a few saws on the market that have an interference problem with the inside blade. To check this disconnect power to the saw, and with a blade on the saw look down inside the saw beside the blade. If there is anything like belts or structural members closer than 1/2" from the sides of the blade then this could be a problem. If there is any question after this visual inspection then take an old saw blade (can be a 10" or a 7-1/4" as long as they have the same arbor as the saw) and on the side opposite the arbor nut hot glue 6 US Pennies in a stack about 1-1/2" from the center of the arbor. Put the blade on the saw (still with the saw disconnected) and rotate the blade using the arbor wrench. If the pennies do not contact anything then you should not have an interference problem. Be sure to remove this blade and remove the pennies. Do not run the saw with the pennies attached to the blade or they will fly off and could cause serious injury or death.
If your saw will not handle a Dial-A-Width then we suggest using our Super Dado. This will give you the same great finish as the Dial-A-Width but you will have to use the included metal shims for fine adjustments.
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