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Subject Author Date
God protects the stupid SteveB 05-03-2008
Posted by pdrahn@coinet.com on May 5, 2008, 2:55 pm
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> Yep.
>
> I sent off an e-mail trying to get some permanent clamps installed on
> our prototype shop drill presses earlier today, BEFORE reading your
> post. Your post will get quoted in the follow up e-mails.
>
> For the record, I am firmly in favor of the 'Vice Grip' single sided
> clamps with the mounting bolt permanently fixed to the table. Just
> adjust the height screw, quick squeeze, and your part is clamped down to
> avoid both spinning and lifting when it goes through the back side.
>
> SteveB wrote:
> > Today, I was drilling a 1/4" pilot hole in a 1/2" plate. Going to drill a
> > 1/2" final hole. The plate was about 6 x 9". I did not clamp it to the
> > base. The drill caught the plate and began spinning it. I just jumped
> > back. The more it spun, the more it became out of balance, and it finally
> > snapped before I could reach in and hit the switch. It went flying, but
> > didn't do any damage. Broken drill bit was all.
>
> > Accidents happen when we are doing the most mundane common tasks, and do not
> > observe the MOST COMMON safety precautions.
>
> > DOH!
>
> > Steve

Just be aware, the clamp will pull the plate just a little bit! Enough
to make the drill miss the center you so carefully marked and punched.

Paul

Posted by on May 5, 2008, 7:07 pm
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>
>
>
>
>
>
>
> > Yep.
>
> > I sent off an e-mail trying to get some permanent clamps installed on
> > our prototype shop drill presses earlier today, BEFORE reading your
> > post. Your post will get quoted in the follow up e-mails.
>
> > For the record, I am firmly in favor of the 'Vice Grip' single sided
> > clamps with the mounting bolt permanently fixed to the table. Just
> > adjust the height screw, quick squeeze, and your part is clamped down to
> > avoid both spinning and lifting when it goes through the back side.
>
> > SteveB wrote:
> > > Today, I was drilling a 1/4" pilot hole in a 1/2" plate. Going to drill a
> > > 1/2" final hole. The plate was about 6 x 9". I did not clamp it to the
> > > base. The drill caught the plate and began spinning it. I just jumped
> > > back. The more it spun, the more it became out of balance, and it finally
> > > snapped before I could reach in and hit the switch. It went flying, but
> > > didn't do any damage. Broken drill bit was all.
>
> > > Accidents happen when we are doing the most mundane common tasks, and do
not
> > > observe the MOST COMMON safety precautions.
>
> > > DOH!
>
> > > Steve
>
> Just be aware, the clamp will pull the plate just a little bit! Enough
> to make the drill miss the center you so carefully marked and punched.
>
> Paul


Unless, I guess, the clamp pivot, the point where the clamp contacts
the work, and the top of the work are all approx. in a line.

Dave

Posted by Dan on May 4, 2008, 7:24 am
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And if that happens again, hold the drill down to the table and shut
the drill press off. It will prevent the piece from flying off the
table. I've that happen lots of times and holding the piece down on
the table with the drill has become second nature.
Sure is dangerous though. I ought to quit doing that.


Posted by SteveB on May 4, 2008, 1:51 pm
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> And if that happens again, hold the drill down to the table and shut
> the drill press off. It will prevent the piece from flying off the
> table. I've that happen lots of times and holding the piece down on
> the table with the drill has become second nature.
> Sure is dangerous though. I ought to quit doing that.

If it's all the same to you, the next time I drill a 5# or better piece of
1/2" plate, I'll just clamp it down and keep my fingers and hands out of it.

Steve



Posted by Mark Rand on May 4, 2008, 4:21 pm
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wrote:

>Today, I was drilling a 1/4" pilot hole in a 1/2" plate. Going to drill a
>1/2" final hole. The plate was about 6 x 9". I did not clamp it to the
>base. The drill caught the plate and began spinning it. I just jumped
>back. The more it spun, the more it became out of balance, and it finally
>snapped before I could reach in and hit the switch. It went flying, but
>didn't do any damage. Broken drill bit was all.
>
>Accidents happen when we are doing the most mundane common tasks, and do not
>observe the MOST COMMON safety precautions.
>
>DOH!
>
>Steve


Thinks to self:-

Thanks for the reminder. I must get a telescopic pendulum safety switch for
the drill press.

Mark Rand
RTFM

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