Northeast Pa. Shapeoko pro.
I have my setup in the basement.
With one dehumidifier I average between 50 - 60 % humidity.
Is there a preferred humidity.
Like most things in life, this is a tradeoff.
I have mine set at 45% and it runs almost constantly during the summer, which energy usage the finance committee complains of — but my tools don’t rust and no issues w/ warping on the MDF and so forth, 50 or 60 would probably be fine as well, but I have a home office and a lot of books, so want to keep it at 50% or lower.
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I live in Houston TX and my shop is not climate controlled. The humidity is what it is and is always high. If you are worried about the machine mine does not have any issues with the bed swelling or warping. Rust is really none on the steel parts I have more buildup with dust on the pulleys than anything else. the machine has been in the shop for many years with no issues.
I am assuming your basement is climate controlled but even if it is not try google and see what the humidity range is in your area based on your conditions. For example in Houston the humidity inside my house climate controlled should be in the range 30% to 55% depending which site you look at.
Anthony
Originally from East Texas, lived in Houston for a year…first month I lived there it rained practically every day! If the machine can survive there without climate control, it can probably make it anywhere short of being underwater (and in Houston, that’s even a possibility!!).
Seattle area here - high humidity is typically not the problem. In the winter heating up my shed from 35-40F to 65F drops the relative humidity (RH) to 15% or so, and nothing I can do will stop static disconnects when the RH is below 40%, so I use a humidifier to bring it up to at least 40% in the winter before I begin cutting.
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