Does anyone run evaporative coolers in there shop/garage? If so, how are the tools standing up to the humidity? It's hot in AZ and it's cheaper than AC.
My tools are doing fine. I do a both wood and metal stuff. Both are fine. My wood doesnt swell and my cast iron tops of the table saw joiner etc are rust free.
Get the biggest one you can afford and have space for. They work really good in May-June. When the monsoons start to hit they aren't as effective.
For instance, in June, the air coming out of teh swamp cooler will be 20-25 degree cooler. Right now, with the rain we have gotten, its about 10 degrees cooler then ambient. Still helps.
I have a master cool portable. Biggest mastercool portable home depot carries.
EDIT: One more thing. You have to have air flow through your shop. If you dont it just turns into a humid mess. So you have play with the doors to find the right amount of air coming in/going out.