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#1
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Is it harder to drill holes in metal when the metal is cold?
Is it harder to drill holes in metal when the metal is cold?
For some reason I think so. I have a few holes to drill in 1/8 or 3/64" steel, outside, and it's about 30 degrees most days lately. They are going to be awkward to drill in the first place, so I don't want it to be harder to do, and I can delay it to 70 degree weather. That's no big deal but now it's more important to me as an academic question. |
#2
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Is it harder to drill holes in metal when the metal is cold?
mm wrote:
Is it harder to drill holes in metal when the metal is cold? For some reason I think so. I have a few holes to drill in 1/8 or 3/64" steel, outside, and it's about 30 degrees most days lately. They are going to be awkward to drill in the first place, so I don't want it to be harder to do, and I can delay it to 70 degree weather. That's no big deal but now it's more important to me as an academic question. no. |
#3
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Is it harder to drill holes in metal when the metal is cold?
On 2011-02-02, mm wrote:
Is it harder to drill holes in metal when the metal is cold? No. As you drill, the metal being drilled and the drill bit heat up from friction. In fact, one should use a cutting fluid to both reduce friction and promote cooling. Sharpen your drills! nb |
#4
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Is it harder to drill holes in metal when the metal is cold?
In article ,
mm wrote: Is it harder to drill holes in metal when the metal is cold? For some reason I think so. I have a few holes to drill in 1/8 or 3/64" steel, outside, and it's about 30 degrees most days lately. They are going to be awkward to drill in the first place, so I don't want it to be harder to do, and I can delay it to 70 degree weather. That's no big deal but now it's more important to me as an academic question. It's actually easier, because the molecules are moving more slowly. You don't want them running around like lunatics, jumping out of the way of the drill. However, wearing mittens while drilling does make it a little harder. |
#5
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Is it harder to drill holes in metal when the metal is cold?
?
"notbob" wrote in message ... On 2011-02-02, mm wrote: Is it harder to drill holes in metal when the metal is cold? No. As you drill, the metal being drilled and the drill bit heat up from friction. In fact, one should use a cutting fluid to both reduce friction and promote cooling. Sharpen your drills! nb And make sure it is not in reverse. A guy at work, Bob, was having trouble drilling a hole so he asked the maintenance guy to sharpen the bit. He did. A few minutes later, Bob comes back and says "you sure screwed can't sharpen a drill bit, it is no better than before" The maintenance guy took the drill from his hand, pulled the trigger, and you can guess the rest. |
#6
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Is it harder to drill holes in metal when the metal is cold?
mm wrote: Is it harder to drill holes in metal when the metal is cold? For some reason I think so. I have a few holes to drill in 1/8 or 3/64" steel, outside, and it's about 30 degrees most days lately. They are going to be awkward to drill in the first place, so I don't want it to be harder to do, and I can delay it to 70 degree weather. That's no big deal but now it's more important to me as an academic question. Hi, B4 asking, why don't you try and tell us? |
#7
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Is it harder to drill holes in metal when the metal is cold?
On Wed, 02 Feb 2011 08:54:45 -0700, Tony Hwang
wrote: mm wrote: Is it harder to drill holes in metal when the metal is cold? For some reason I think so. I have a few holes to drill in 1/8 or 3/64" steel, outside, and it's about 30 degrees most days lately. They are going to be awkward to drill in the first place, so I don't want it to be harder to do, and I can delay it to 70 degree weather. That's no big deal but now it's more important to me as an academic question. Hi, B4 asking, why don't you try and tell us? There's no electricity outside where the work is. I have to find out when someone will be there and arrange to be there when the door to the electricity is unlocked. I'm not sure I could tell anyhow. It might seem to take longer if I was cold. |
#8
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Is it harder to drill holes in metal when the metal is cold?
On Wed, 02 Feb 2011 07:32:54 -0800, Smitty Two
wrote: In article , mm wrote: Is it harder to drill holes in metal when the metal is cold? For some reason I think so. I have a few holes to drill in 1/8 or 3/64" steel, outside, and it's about 30 degrees most days lately. They are going to be awkward to drill in the first place, so I don't want it to be harder to do, and I can delay it to 70 degree weather. That's no big deal but now it's more important to me as an academic question. It's actually easier, because the molecules are moving more slowly. You don't want them running around like lunatics, jumping out of the way of the drill. That sounds frightening. I fear some would run up my arm and get inside my clothes. However, wearing mittens while drilling does make it a little harder. Thanks, and thanks all. |
#9
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Is it harder to drill holes in metal when the metal is cold?
You don't have a cordless drill? Thanks for the
humor, I'd also not want mollecules running up my sleeve. -- Christopher A. Young Learn more about Jesus www.lds.org .. "mm" wrote in message ... It's actually easier, because the molecules are moving more slowly. You don't want them running around like lunatics, jumping out of the way of the drill. That sounds frightening. I fear some would run up my arm and get inside my clothes. However, wearing mittens while drilling does make it a little harder. Thanks, and thanks all. |
#10
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Is it harder to drill holes in metal when the metal is cold?
"mm" wrote in message ... Is it harder to drill holes in metal when the metal is cold? For some reason I think so. I have a few holes to drill in 1/8 or 3/64" steel, outside, and it's about 30 degrees most days lately. They are going to be awkward to drill in the first place, so I don't want it to be harder to do, and I can delay it to 70 degree weather. That's no big deal but now it's more important to me as an academic question. All sound advice but one more which has always been a rule that I learned is to drill slow. When drilling wood, any speed is ok but fast is better. When drilling metal, slow is better. |
#11
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Is it harder to drill holes in metal when the metal is cold?
SBH wrote:
"mm" wrote in message ... Is it harder to drill holes in metal when the metal is cold? For some reason I think so. I have a few holes to drill in 1/8 or 3/64" steel, outside, and it's about 30 degrees most days lately. They are going to be awkward to drill in the first place, so I don't want it to be harder to do, and I can delay it to 70 degree weather. That's no big deal but now it's more important to me as an academic question. All sound advice but one more which has always been a rule that I learned is to drill slow. When drilling wood, any speed is ok but fast is better. When drilling metal, slow is better. that isn't correct. slow drilling, where the bit spins but doesn't cut, will cause work hardening, and the cutting of the bit stops. there are tables of recommended speeds for specific metals and specific sized bits. |
#12
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Is it harder to drill holes in metal when the metal is cold?
I think different metals or woods, different speed
and feed. For many metals, fast is better. For example, thick aluminum works better for me, with high speed and very gentle feed pressure. Most steel, for me, high speed is better. High pressure, to start, and then lighten up. -- Christopher A. Young Learn more about Jesus www.lds.org .. "SBH" wrote in message ... All sound advice but one more which has always been a rule that I learned is to drill slow. When drilling wood, any speed is ok but fast is better. When drilling metal, slow is better. |
#13
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Is it harder to drill holes in metal when the metal is cold?
On Feb 2, 6:52*am, mm wrote:
Is it harder to drill holes in metal when the metal is cold? For some reason I think so. I have a few holes to drill in 1/8 or 3/64" steel, outside, and it's about 30 degrees most days lately. * They are going to be awkward to drill in the first place, so I don't want it to be harder to do, and I can delay it to 70 degree weather. That's no big deal but now it's more important to me as an academic question. In a word, no. It would have to be approaching red heat to soften noticeably and that would ruin the drill bit. Harry K |
#14
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Is it harder to drill holes in metal when the metal is cold?
notbob wrote:
On 2011-02-02, mm wrote: Is it harder to drill holes in metal when the metal is cold? No. As you drill, the metal being drilled and the drill bit heat up from friction. In fact, one should use a cutting fluid to both reduce friction and promote cooling. Sharpen your drills! I second the suggestion to use a cutting fluid, it makes a world of difference when you have to drill a hole. Jon |
#15
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Is it harder to drill holes in metal when the metal is cold?
On Wed, 2 Feb 2011 11:38:46 -0500, "Stormin Mormon"
wrote: You don't have a cordless drill? Thanks for the humor, I'd also not want mollecules running up my sleeve. I have a 12 or some low voltage one I bought at a yard sale, after he upgraded, but it would never drill all the holes I need. It's very rare I need a cordless anything. |
#16
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Is it harder to drill holes in metal when the metal is cold?
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#17
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Is it harder to drill holes in metal when the metal is cold?
chaniarts wrote:
All sound advice but one more which has always been a rule that I learned is to drill slow. When drilling wood, any speed is ok but fast is better. When drilling metal, slow is better. that isn't correct. slow drilling, where the bit spins but doesn't cut, will cause work hardening, and the cutting of the bit stops. there are tables of recommended speeds for specific metals and specific sized bits. And all are slower than drilling in wood. Or bone. |
#18
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Is it harder to drill holes in metal when the metal is cold?
?
"Jon Danniken" wrote I second the suggestion to use a cutting fluid, it makes a world of difference when you have to drill a hole. Jon Spray it with WD-40, it is widely used as a lubricant. |
#19
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Is it harder to drill holes in metal when the metal is cold?
"Stormin Mormon" wrote in message ... I think different metals or woods, different speed and feed. For many metals, fast is better. For example, thick aluminum works better for me, with high speed and very gentle feed pressure. Most steel, for me, high speed is better. High pressure, to start, and then lighten up. Agreed, but I've had good success with fast speeds on most woods, to avoid splintering/chipping and slow speeds on most metals, especially aluminum. Aluminum being soft is easy to drill at slower speeds, though, I can see using faster speeds on it due to that softness. |
#20
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Is it harder to drill holes in metal when the metal is cold?
"mm" wrote in message ... Is it harder to drill holes in metal when the metal is cold? For some reason I think so. I have a few holes to drill in 1/8 or 3/64" steel, outside, and it's about 30 degrees most days lately. They are going to be awkward to drill in the first place, so I don't want it to be harder to do, and I can delay it to 70 degree weather. That's no big deal but now it's more important to me as an academic question. No, unless you are talking about below zero, when everything becomes more brittle. Take it easy, and the friction will heat it up in a couple of seconds. Ever touch a drillbit that has just cut a hole? They get pretty warm. Use a pilot bit to make it easier if you are going to be cutting any holes larger than 1/4". Steve Heart surgery pending? Read up and prepare. Learn how to care for a friend. Download the book. http://cabgbypasssurgery.com |
#21
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Is it harder to drill holes in metal when the metal is cold?
On Wed, 2 Feb 2011 17:33:23 -0500, "Ed Pawlowski"
wrote: ? "Jon Danniken" wrote I second the suggestion to use a cutting fluid, it makes a world of difference when you have to drill a hole. Jon Spray it with WD-40, it is widely used as a lubricant. But not as a cutting fluid. It's a lousy cutting fluid. |
#22
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Is it harder to drill holes in metal when the metal is cold?
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#23
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Is it harder to drill holes in metal when the metal is cold?
On Wed, 02 Feb 2011 11:17:17 -0500, mm
wrote: On Wed, 02 Feb 2011 08:54:45 -0700, Tony Hwang wrote: mm wrote: Is it harder to drill holes in metal when the metal is cold? For some reason I think so. I have a few holes to drill in 1/8 or 3/64" steel, outside, and it's about 30 degrees most days lately. They are going to be awkward to drill in the first place, so I don't want it to be harder to do, and I can delay it to 70 degree weather. That's no big deal but now it's more important to me as an academic question. Hi, B4 asking, why don't you try and tell us? There's no electricity outside where the work is. I have to find out when someone will be there and arrange to be there when the door to the electricity is unlocked. I'm not sure I could tell anyhow. It might seem to take longer if I was cold. What? No cordless drill??? |
#24
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Is it harder to drill holes in metal when the metal is cold?
On Wed, 2 Feb 2011 12:18:33 -0700, "chaniarts"
wrote: SBH wrote: "mm" wrote in message ... Is it harder to drill holes in metal when the metal is cold? For some reason I think so. I have a few holes to drill in 1/8 or 3/64" steel, outside, and it's about 30 degrees most days lately. They are going to be awkward to drill in the first place, so I don't want it to be harder to do, and I can delay it to 70 degree weather. That's no big deal but now it's more important to me as an academic question. All sound advice but one more which has always been a rule that I learned is to drill slow. When drilling wood, any speed is ok but fast is better. When drilling metal, slow is better. that isn't correct. slow drilling, where the bit spins but doesn't cut, will cause work hardening, and the cutting of the bit stops. there are tables of recommended speeds for specific metals and specific sized bits. Slow cutting speed and fast feed is the secret. Do not let the bit "slide - it must "dig" - particularly on stainless or tool steel |
#25
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Is it harder to drill holes in metal when the metal is cold?
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#26
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Is it harder to drill holes in metal when the metal is cold?
In article ,
"SBH" wrote: When drilling metal, slow is better. As others have said, that isn't quite true. Metal cutting speeds are properly measured in "inches per minute" (IPM) not "revolutions per minute" (RPM). Bearing in mind that softer metals like aluminum can be cut faster than harder metals like steel, for any given material, some observations: A drill moves faster near its perimeter than it does near its center, making RPM to IPM conversions elusive. That's why metals are often step-drilled. Start with a small bit and a high RPM, work your way up to larger bits with progressively slower RPMs. High-speed machining aside, I'd drill a 1/16" hole in steel at about 1500 RPM. If I worked up to 1/2", I'd be down to 100 RPM. That's why step drilling is so important. Matching the feed rate (how fast you push the drill through the material) to the speed (IPM or RPM) is something that is learned by cutting thousands of holes. |
#27
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Is it harder to drill holes in metal when the metal is cold?
wrote in message ... On Wed, 2 Feb 2011 17:33:23 -0500, "Ed Pawlowski" wrote: ? "Jon Danniken" wrote I second the suggestion to use a cutting fluid, it makes a world of difference when you have to drill a hole. Jon Spray it with WD-40, it is widely used as a lubricant. But not as a cutting fluid. It's a lousy cutting fluid. It makes women scream when used as a personal lubricant. Steve |
#28
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Is it harder to drill holes in metal when the metal is cold?
wrote Slow cutting speed and fast feed is the secret. Do not let the bit "slide - it must "dig" - particularly on stainless or tool steel I watch for chips or better yet, spirals. I love to watch guys use high speed and watch the drills get red hot. I just use high speed when drilling wood. Slow and steady and as long as I'm getting chips or spirals, I just let it work. I also like my Drill Doctor. I used to have about 500 drill bits, about a dozen of them sharp. Now I have two full indexes of sharp bits. Steve |
#29
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Is it harder to drill holes in metal when the metal is cold?
On 2/2/2011 8:52 AM, mm wrote:
Is it harder to drill holes in metal when the metal is cold? For some reason I think so. I have a few holes to drill in 1/8 or 3/64" steel, outside, and it's about 30 degrees most days lately. They are going to be awkward to drill in the first place, so I don't want it to be harder to do, and I can delay it to 70 degree weather. That's no big deal but now it's more important to me as an academic question. I've noticed that I have more bits shatter in cold weather. I have very few drill bits break in warmer weather. If I'm doing serious drilling in any metal other than sheet metal, I use a lubricant called Tap Magic. It's for drilling and thread cutting. TDD |
#30
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Is it harder to drill holes in metal when the metal is cold?
On 2/2/2011 4:33 PM, Ed Pawlowski wrote:
? "Jon Danniken" wrote I second the suggestion to use a cutting fluid, it makes a world of difference when you have to drill a hole. Jon Spray it with WD-40, it is widely used as a lubricant. But being basically kerosene, it doesn't make the best cutting oil. -- Steve Barker remove the "not" from my address to email |
#31
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Is it harder to drill holes in metal when the metal is cold?
On Feb 2, 11:34*am, "Ed Pawlowski" wrote:
?"notbob" wrote in message ... On 2011-02-02, mm wrote: Is it harder to drill holes in metal when the metal is cold? And make sure it is not in reverse. *A guy at work, Bob, was having trouble drilling a hole so he asked the maintenance guy to sharpen the bit. He did. A few minutes later, Bob comes back and says "you sure screwed can't sharpen a drill bit, it is no better than before" *The maintenance guy took the drill from his hand, pulled the trigger, and you can guess the rest. Have to admit; been there, done that, with a new set of bits, felt like a fool. Rene |
#32
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Is it harder to drill holes in metal when the metal is cold?
On Thu, 03 Feb 2011 03:39:49 -0600, The Daring Dufas
wrote: On 2/2/2011 8:52 AM, mm wrote: Is it harder to drill holes in metal when the metal is cold? For some reason I think so. I have a few holes to drill in 1/8 or 3/64" steel, outside, and it's about 30 degrees most days lately. They are going to be awkward to drill in the first place, so I don't want it to be harder to do, and I can delay it to 70 degree weather. That's no big deal but now it's more important to me as an academic question. I've noticed that I have more bits shatter in cold weather. I have very few drill bits break in warmer weather. If I'm doing serious drilling in any metal other than sheet metal, I use a lubricant called Tap Magic. It's for drilling and thread cutting. Thanks. I'll keep my eyes open for that, and bring some kind of lub with me for this. I don't have an enormous number of bits, certainly not in the right size, so I'll take them all with me. This weekend it's supposed to be in the 40's and he'll probably be there**, but I just learned I need to buy one more part, maybe today if I find it. **Not only that, I stopped by to check on the work to be done and indeed he does have an outdoor outlet, just 10 feet away. Maybe it's not connected at the moment, but even if it is, I don't know how to use it after he told me he didn't have one. I vaguely think he'd resent it. And I don't know how to tell him he has one. Same reason. TDD |
#33
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Is it harder to drill holes in metal when the metal is cold?
On 2/4/2011 11:56 AM, mm wrote:
On Thu, 03 Feb 2011 03:39:49 -0600, The Daring Dufas wrote: On 2/2/2011 8:52 AM, mm wrote: Is it harder to drill holes in metal when the metal is cold? For some reason I think so. I have a few holes to drill in 1/8 or 3/64" steel, outside, and it's about 30 degrees most days lately. They are going to be awkward to drill in the first place, so I don't want it to be harder to do, and I can delay it to 70 degree weather. That's no big deal but now it's more important to me as an academic question. I've noticed that I have more bits shatter in cold weather. I have very few drill bits break in warmer weather. If I'm doing serious drilling in any metal other than sheet metal, I use a lubricant called Tap Magic. It's for drilling and thread cutting. Thanks. I'll keep my eyes open for that, and bring some kind of lub with me for this. I don't have an enormous number of bits, certainly not in the right size, so I'll take them all with me. This weekend it's supposed to be in the 40's and he'll probably be there**, but I just learned I need to buy one more part, maybe today if I find it. **Not only that, I stopped by to check on the work to be done and indeed he does have an outdoor outlet, just 10 feet away. Maybe it's not connected at the moment, but even if it is, I don't know how to use it after he told me he didn't have one. I vaguely think he'd resent it. And I don't know how to tell him he has one. Same reason. One thing I do recommend when drilling small diameter holes with a hand held drill, is to use the short jobber length bits. You can pick them up at most industrial suppliers in packs of 10 or I believe Harbor Freight has them too. The 1/8 bits are 1-1/2 to 2 inches long and less likely to break in a hand held drill. I use the titanium nitride coated bits, they're gold in color. TDD |
#34
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Is it harder to drill holes in metal when the metal is cold?
....
::::: ::::: :::: :::: Spray it with WD-40, it is widely used as a lubricant. ::: ::: But not as a cutting fluid. It's a lousy cutting fluid. :: :: It makes women scream when used as a personal lubricant. :: :: Steve WD-40 is NOT a lubricant! That's an urban myth and totally wrong. Just the opposite, it removes all oil, grease, water, etc. from wherever it's used. Look it up. Using WD-40 without following up with a light oil will only increase the wear rate on the parts it's used on. Look it up. With the parts now dry after using it, it may seem to work freely for a bit, but it'll screw up sooner and you'll spray it again, it'll lock up again, spray it again, etc.. HTH, Twayne` |
#35
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Is it harder to drill holes in metal when the metal is cold?
In ,
Steve B typed: :: wrote in message :: ... ::: On Wed, 2 Feb 2011 17:33:23 -0500, "Ed Pawlowski" ::: wrote: ::: :::: ? :::: "Jon Danniken" :::: wrote ::::: ::::: I second the suggestion to use a cutting fluid, it ::::: makes a world of difference when you have to drill a ::::: hole. ::::: ::::: Jon ::::: ::::: :::: :::: Spray it with WD-40, it is widely used as a lubricant. ::: ::: But not as a cutting fluid. It's a lousy cutting fluid. :: :: It makes women scream when used as a personal lubricant. :: :: Steve It's a lousy cutting fluid because it is NOT a lubricant! Go to their site and read up. |
#36
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Is it harder to drill holes in metal when the metal is cold?
In ,
The Daring Dufas typed: :: On 2/2/2011 8:52 AM, mm wrote: ::: Is it harder to drill holes in metal when the metal is ::: cold? ::: ::: For some reason I think so. ::: ::: I have a few holes to drill in 1/8 or 3/64" steel, ::: outside, and it's about 30 degrees most days lately. ::: They are going to be awkward to drill in the first place, ::: so I don't want it to be harder to do, and I can delay it ::: to 70 degree weather. ::: ::: That's no big deal but now it's more important to me as ::: an academic question. :: :: I've noticed that I have more bits shatter in cold :: weather. I have very few drill bits break in warmer :: weather. If I'm doing serious drilling in any metal other :: than sheet metal, I use a lubricant called Tap Magic. It's :: for drilling and thread cutting. :: :: TDD I do the same but if I get caught short, I'll sometimes use kerosene. As long as you're not stupid enough to let the bit get red hot, it'll never ignite on you and if it does it's easy to quench that little bit. Most of the so called drilling "lubricants" are mostly kerosene anyway if you look at the contents. HTH, Twayne` |
#37
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Is it harder to drill holes in metal when the metal is cold?
On 2/4/2011 7:57 PM, Twayne wrote:
In , The Daring typed: :: On 2/2/2011 8:52 AM, mm wrote: ::: Is it harder to drill holes in metal when the metal is ::: cold? ::: ::: For some reason I think so. ::: ::: I have a few holes to drill in 1/8 or 3/64" steel, ::: outside, and it's about 30 degrees most days lately. ::: They are going to be awkward to drill in the first place, ::: so I don't want it to be harder to do, and I can delay it ::: to 70 degree weather. ::: ::: That's no big deal but now it's more important to me as ::: an academic question. :: :: I've noticed that I have more bits shatter in cold :: weather. I have very few drill bits break in warmer :: weather. If I'm doing serious drilling in any metal other :: than sheet metal, I use a lubricant called Tap Magic. It's :: for drilling and thread cutting. :: :: TDD I do the same but if I get caught short, I'll sometimes use kerosene. As long as you're not stupid enough to let the bit get red hot, it'll never ignite on you and if it does it's easy to quench that little bit. Most of the so called drilling "lubricants" are mostly kerosene anyway if you look at the contents. HTH, Twayne` One of the purposes of a "cutting" lubricant is to cool the cutting tool. The Tap Magic will actually flow toward the action. I got the stuff when I was doing a lot of fabricating out of aluminum and the product eliminated all drilling and tapping problems I was having. http://www.tapmagic.com/ TDD |
#38
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Is it harder to drill holes in metal when the metal is cold?
?
"Twayne" wrote WD-40 is NOT a lubricant! That's an urban myth and totally wrong. Just the opposite, it removes all oil, grease, water, etc. from wherever it's used. Look it up. From their web site; note number 4: http://www.wd40.com/faqs/#a96 What does WD-40 do?WD-40 fulfills five basic functions: 1. CLEANS: WD-40 gets under dirt, grime and grease to clean. It also dissolves adhesives, allowing easy removal of labels, tape and excess bonding material. 2. DISPLACES MOISTU Because WD-40 displaces moisture, it quickly dries out electrical systems to eliminate moisture-induced short circuits. 3. PENETRATES: WD-40 loosens rust-to-metal bonds and frees stuck, frozen or rusted metal parts. 4. LUBRICATES: WD-40's lubricating ingredients are widely dispersed and tenaciously held to all moving parts. 5. PROTECTS: WD-40 protects metal surfaces with corrosion-resistant ingredients to shield against moisture and other corrosive elements. What does WD-40 contain? While the ingredients in WD-40 are secret, we can tell you what WD-40 does NOT contain. WD-40 does not contain silicone, kerosene, water, wax, graphite, chlorofluorocarbons (CFCs), or any known cancer-causing agents. |
#39
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Is it harder to drill holes in metal when the metal is cold?
On Fri, 04 Feb 2011 12:53:31 -0600, The Daring Dufas
wrote: On 2/4/2011 11:56 AM, mm wrote: On Thu, 03 Feb 2011 03:39:49 -0600, The Daring Dufas wrote: On 2/2/2011 8:52 AM, mm wrote: Is it harder to drill holes in metal when the metal is cold? For some reason I think so. I have a few holes to drill in 1/8 or 3/64" steel, outside, and it's about 30 degrees most days lately. They are going to be awkward to drill in the first place, so I don't want it to be harder to do, and I can delay it to 70 degree weather. That's no big deal but now it's more important to me as an academic question. I've noticed that I have more bits shatter in cold weather. I have very few drill bits break in warmer weather. If I'm doing serious drilling in any metal other than sheet metal, I use a lubricant called Tap Magic. It's for drilling and thread cutting. Thanks. I'll keep my eyes open for that, and bring some kind of lub with me for this. I don't have an enormous number of bits, certainly not in the right size, so I'll take them all with me. This weekend it's supposed to be in the 40's and he'll probably be there**, but I just learned I need to buy one more part, maybe today if I find it. **Not only that, I stopped by to check on the work to be done and indeed he does have an outdoor outlet, just 10 feet away. Maybe it's not connected at the moment, but even if it is, I don't know how to use it after he told me he didn't have one. I vaguely think he'd resent it. And I don't know how to tell him he has one. Same reason. One thing I do recommend when drilling small diameter holes with a hand held drill, is to use the short jobber length bits. You can pick them up at most industrial suppliers in packs of 10 or I believe Harbor Freight has them too. The 1/8 bits are 1-1/2 to 2 inches long and less likely to break in a hand held drill. I use the titanium nitride coated bits, they're gold in color. Good to know. Thanks. I was at HFreight yesterday, but may be there again in two weeks. I did find the part I need, but the immediate need for the trailer faded today when I didn't bid on the furnace and someone else did with 9 seconds left. I thought he would have to relist it. I don't know if I wanted it or not, but I'm still depressed. TDD |
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Is it harder to drill holes in metal when the metal is cold?
On Fri, 4 Feb 2011 20:57:56 -0500, "Twayne"
wrote: In , The Daring Dufas typed: :: On 2/2/2011 8:52 AM, mm wrote: ::: Is it harder to drill holes in metal when the metal is ::: cold? ::: ::: For some reason I think so. ::: ::: I have a few holes to drill in 1/8 or 3/64" steel, ::: outside, and it's about 30 degrees most days lately. ::: They are going to be awkward to drill in the first place, ::: so I don't want it to be harder to do, and I can delay it ::: to 70 degree weather. ::: ::: That's no big deal but now it's more important to me as ::: an academic question. :: :: I've noticed that I have more bits shatter in cold :: weather. I have very few drill bits break in warmer :: weather. If I'm doing serious drilling in any metal other :: than sheet metal, I use a lubricant called Tap Magic. It's :: for drilling and thread cutting. :: :: TDD I do the same but if I get caught short, I'll sometimes use kerosene. As long as you're not stupid enough to let the bit get red hot, it'll never ignite on you and if it does it's easy to quench that little bit. Most of the so called drilling "lubricants" are mostly kerosene anyway if you look at the contents. HTH, Twayne` Does this or the other lubricants work when you're drilling up? |
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