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As a child and later manchild who has played with electric drills, I find it would be very difficult to injure yourself. You'd need to apply a lot of pressure t
by Swizec 9y ago
As a child and later manchild who has played with electric drills, I find it would be very difficult to injure yourself. You'd need to apply a lot of pressure to drill into yourself. You can somewhat safely touch the sides of a drill bit as it's spinning and it won't do anything.
Sore wrists though ... yeah I can see that. Those things vibrate a lot.
I guess you could cause the drill bit to fly out at high speed if you don't fasten it properly, but what kind of maniac drills with a wobbly drill bit?
- jacquesm 9y agoTrue, but drill presses are actually quite dangerous. If they spin moderately fast (a few hundred rpm) and you drill into a steel object that is a few kilos and the drill grabs the piece it can throw the workpiece with lots of force if it isn't tied down well enough, and it takes a lot of tying down before it is 'well enough'. Then there's the chance that the drill bit will shatter and bits come flying off at high speed. This can happen with a hand held power drill as well.
- Swizec 9y agoAh yes I haven't played with drill presses yet. Well a little bit at shop class in middle school but that was soft wood. Never had a drill bit shatter before. How do you achieve that? Does it require anything more than eye protection and long sleeves?
- jacquesm 9y ago> How do you achieve that? Hard metal, moderate vertical pressure, drill bit seizing deep in a hole. The remainder of the drill then has to absorb the energy in the gears and the motor, if the drill is hard enough it won't flex but it will break, and if you're unlucky it will break apart in many small pieces. Eye protection is a minimum with any drill, long sleeves won't hurt. Setting things up so that if the bit shatters it is not going to have anything critical in the plane of rotation helps as well. I've had this happen only twice over 30 years but it's a pretty good surprise when it happens. Both times it was with large bits (20 mm and up), cutting oil and a deep hole in hard steel. That seems to be the perfect recipe. Even then the usual outcome of the bit seizing is the drill circuit protector kicking in before anything bad happens. The large diameter means you'll be gearing down a lot in the drill so there will be a lot of torque available and as long as the bit is cutting you don't really notice that. I suspect that if you analyzed the problem in detail you'd find that some chip got wedged between the drill bit and the hole walls which would shorten the length of bit available to absorb the excess momentum. Extracting the remainder of the drill from the hole can be quite an interesting challenge all by itself.
- ldite 9y agoI've had burns from hot drill bits...
- deleted 9y ago[deleted]
- mauvehaus 9y agoSurprisingly, you can generate enough heat with a hand drill to burn yourself on the bit.
- mauvehaus 9y agoThe other standard drill injury is nigh impossible too. You know, the one that starts out by thinking "I don't need to clamp this". And ends with spinning the workpiece around and catching yourself or your hand. As an added added bonus, you also probably won't find yourself tempted to chuck a wire wheel in a hand drill, which eliminates several other ways to damage stuff or yourself.