I was going to make a router table but when Rockler had a sale on a router table top, fence and plate for $129 I couldn't resist. The top is 1 1/8" thick MDF with laminate on both sides. How would you attach the top to the steel stand....wood screws, sheet metal screws, or someother type of screw? I have never had good results when screwing into MDF and don't want to ruin the top. Also, I was surprised when I saw the edges were all raw MDF, no edging. Would you seal the edges with shellac or poly? Thanks for your help.