In one of my classes we're reflooring a trailer. Lucky me I get to drill all the holes. #16 drill bit. 2" boards on top of steel frame members about 1/8" thick. I'll drill the wood, clear the chips, then go through and dill the frame. So far I've been sticking with relatively low speed and high pressure. Is that the best way to do it, or should I trade off for more speed/less pressure? A HSS bit will go about 40-50 holes before getting uselessly dull, but occasionally I'll strike a weld over and old hole and that'll significantly shorten the drill's life span. Is 40-50 holes expected? Anything I can do about the welds short of dumb luck?
- posted
19 years ago