The drill setting is going to give you either high speed and low torque or low speed and high torque and, if there’s a third speed, something in the middle. If you pull the trigger all the way in, the drill will spin until you finish drilling your hole, or until the bit catches on some- thing and stops. Once the bit stops, the drill will contin- ue to try to rotate until you let up on the trigger. If you’re not fast enough and the drill is tight in the chuck, you’re likely to over-torque the bit and it will snap — usu- ally in the worst possible way. In the case of a hole saw, you’ll probably knock off a few teeth. Sometimes the saw skips its merry way across the surface of the door, making the situation so much better. If you missed it, that last line was sarcasm. One other thing to consider is the ef- fect of all this torque on you. There isn’t “The further you move away from the pivot point, the easier it is to apply torque.” one of us out there who hasn’t had a bit or hole saw jam on occasion. When the bit stops, the drill keeps going, transfer- ring the torque to your wrist elbows an shoulder, sometimes with painful resul What’s also painful is the psycholog cal part of this. I’m oſten around oth tradesmen, and if something like th happens, it’s hard to not feel like an idi for doing it, even though I know they’ all done it too. The worst instance of this for me was when I was in my twenties. I was using a corded Bosch Mighty Midget ½" drill and a 2⅛ hole saw on an old metal door. l didn’t realize there was a second layer of steel under the first. The hole saw caught, jammed and was ripped out of my hands. It pulled its own plug and hit a cinder block wall with such force that the drill broke in half. That’s all for this month. Next month in part two, I’ll go over how we can use the information above to our advantage y Wiersielis, CPL, CFDI, s more than a quarter ry of experience and orked in most phases e trade throughout the ork metropolitan area. SAVE THE DATE! Reach New Heights at the Annual SAFETECH Convention and Trade Show 2016 May 16-20, 2016 ◆ Trade Show May 21, 2016 You asked — we listened. We’re back in Lexington for this value-filled event: ® Industry-leading classes taught by the best instructors ® Swap Meet and the Harry C. Miller Manipulation Contest ® Classes and Trade Show in one location ® $109 per night rooms with free parking and in-room WiFi at the Hilton Lexington/Downtown Want more information? Call (800) 532-2562 x240 or email [email protected]. SEE YOU IN LEXINGTON! WWW.ALOA.ORG MAY 2016 KEYNOTES 51
