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Homeowner Forum / General / July 2008Spade drill bit problem
I haven't had to drill a hole larger than an inch for a long time, so I wasn't surprised when my 1-1/4-inch spade bit made it to a depth of about 1/8 inch and then spun and soon smoked. Maybe time to buy a new one. From Home Depot I got a shiny new Irwin Speedbor for $5.31 that...spun and smoked. And we're not talking mahogany here; I was working with a pine board. Who ever heard of a defective drill bit? Might I have been doing something wrong? -- Charles Packer http://cpacker.org/whatnews mailboxATcpacker.org "spun" suggests that it wasn't attached to the chuck, etc. My spade bits have a hexagonal cross section on the shaft which locks them quite firmly into the chuck, but I need to tighten it up pretty good as well. "smoke" suggests you are trying to feed it too fast, or the bit need sharpening. For large holes, a hole saw is often a better approach. > "spun" suggests that it wasn't attached to the chuck, etc. My spade > bits have a hexagonal cross section on the shaft which locks them [quoted text clipped - 5 lines] > > For large holes, a hole saw is often a better approach. By "spun" I meant that it cut _exceedingly_ slowly, generating fine dust instead of chips. The drill was tight in the chuck. Yes, it smoked when I pressed harder. But it was a brand new bit. That's the mystery. The only time I've ever used a bit larger than an inch until now is for the occasional installing of a door lock, like about once every ten years or so. Maybe I've just forgotten the rate at which a wide bit is supposed to cut. Anyway, in the meantime I've changed the design of my project so that I'll need only one-inch holes. -- Charles Packer http://cpacker.org/whatnews mailboxATcpacker.org In article <ff23c843-1778-4168-874f-db5f18fe093a@ 79g2000hsk.googlegroups.com>, mailbox@cpacker.org says... > > "spun" suggests that it wasn't attached to the chuck, etc. My spade > > bits have a hexagonal cross section on the shaft which locks them [quoted text clipped - 17 lines] > changed the design of my project so that I'll need only > one-inch holes. Drill reversed?  SignatureKeith > I haven't had to drill a hole larger than an inch for > a long time, so I wasn't surprised when my 1-1/4-inch [quoted text clipped - 3 lines] > $5.31 that...spun and smoked. And we're not talking > mahogany here; I was working with a pine board. A pine board with a knot or nail where you're boring? Any luck with the same bit in another piece of wood? > Who ever heard of a defective drill bit? Yes. Not likely to be the problem, though. > Might I have > been doing something wrong? Yes. The drill is in reverse. Turn the board over and it should work fine. :) You sure you didn't have it in reverse? >I haven't had to drill a hole larger than an inch for > a long time, so I wasn't surprised when my 1-1/4-inch [quoted text clipped - 10 lines] > http://cpacker.org/whatnews > mailboxATcpacker.org > You sure you didn't have it in reverse? How embarrassing...yes, it's time to tape down that damn lever on the underside of the drill. (My other drill -- that I use almost all the time because it weighs less, doesn't have that reverse feature.) -- Charles Packer http://cpacker.org/whatnews mailboxATcpacker.org You are not the first person to do that, and probably not the last. At least you have a collection of bits to drill with. On Jul 9, 6:57 pm, "Bill" <barg...@bellsouth.net> wrote: > You sure you didn't have it in reverse? How embarrassing...yes, it's time to tape down that damn lever on the underside of the drill. (My other drill -- that I use almost all the time because it weighs less, doesn't have that reverse feature.) -- Charles Packer http://cpacker.org/whatnews mailboxATcpacker.org > > You sure you didn't have it in reverse? > [quoted text clipped - 6 lines] > Charles Packerhttp://cpacker.org/whatnews > mailboxATcpacker.org I did that once. The drill put the chips back in the hole. > I haven't had to drill a hole larger than an inch for > a long time, so I wasn't surprised when my 1-1/4-inch [quoted text clipped - 10 lines] > http://cpacker.org/whatnews > mailboxATcpacker.org How old and dried out was the wood? In this 1960 house, made with whatever species framing lumber in Michigan was that year, I tried to drill some holes in the joists and wall plates to run some romex, and not only smoked a bit, I smoked the drill itself. Installing blocking to patch a hole where a wall furnace used to be, I had to use screws- 16d nails just bent after the first quarter inch. The stuff is hard as a rock. -- aem sends... |
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