I am trying to install a vent for a fan and have to drill the 4″ hole through a 2 x 10 header then old exterior drywall/stucco combo then another 2 x 10 from a deck header. Oh and there is the stucco lathe. A wood bit will get toasted quick. a masonry bit will not make it through the wood and I can not get a cutout tool or a router into the access space. Any ideas?
The Makita LS1219L makes precise repetitive cuts and can handle wide and heavy timbers.
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