We have white spindle railings on our covered back porch and gazebo which has not been refinished in about 5 yrs. The top of the railing is 1x6 wolmanized lumber which is held on with a few screws from underneath. I'm thinking of removing them and running them through my Dewalt planer to resurfaced them and then restain and varnish them. My shop is in the basement and my D.C. is not completely hooked up yet so I'm thinking of taking the planer outside to do this job. Currently using a shop vac and Dust Deputy. Concerned about toxic dust from treated lumber. Any thoughts?