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9

Some other helpful hints (not from Heloise) 0) ALWAYS wear gloves and eye protection. (Note: if you're using one hand to hold down the material being drilled, a glove can reduce injury if the drill bit jams. On the other hand, you should never depend on body parts to hold things in place) 1) When drilling into soft material such as plastic or pine, ...


5

Just some things I see on jobs all the time: Do not use a power drill (you want to keep mix things). You will blow out the motor in a good power drill by using it as a mixer. I see my guys use their Makitas with a mixing rod. And have seen many ruin them. I simply give them a 30 year old craftsman electric drill I have that I would give away for $5. ...


4

Radial loads are bad. Axial loads are good. The bearings in your drill or drill press are designed to counteract the forces in line with the drill bit. A milling machine does both, and using a drill or drill press like a milling machine will destroy the bearings quickly.


3

If you're drilling metal, use an appropriate type of bit (HSS, whatever), use some cutting lube, and drill for short periods with breaks between. Don't run the drill too fast either. If the bit overheats you'll ruin the temper and destroy the bit. Since the title of this question really should be "tell us the dumb ways you broke stuff", I'll mention that I'...


3

If you put a hole saw onto your drill, avoid going fast and always brace it well in case it catches. I have a bad wrist to show for careless hole saw use.


3

a drill bit is not designed to cut on the flute like an end mill. However you will see many folks making a hole larger by moving the drill off axis. It works but not clean. The biggest advice I Could give is to use cutting oil and slower speeds when cutting metal the goal would be to have a long chip develop this shows your speed and pressure are correct for ...



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