These will sometimes get me to check through different means, just to make sure nothing has been hacked. Never use any links provided in the email.
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Its an simple Economizer setup, setpoint controlled by outside air temp. Below the setpoint the outside air kicks in and above the air intake turned...
That's a 6" jointer right? 3/4 hp should be more than enough. Just how much material are you trying to remove in one pass? Making an extra pass would...