I've been thinking about buying a set of the Milwaukee ShockWave bits and something in the description seems counter productive, the skinny part of the shaft absorbs torque. Great they last longer, but the point is to deliver torque to the fastener.
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Shockwave bits "absorb" torgue?
- Thread starter Danglerb
- Start date
Ole Slewfoot
Well-known member
Which doesn't happen when the bit just shatters like some of the yellow ones.
Torque isn't lost, its just delivered over a longer period of time.
Torque isn't lost, its just delivered over a longer period of time.
The Tool Tyrant
ALLIANCE MEMBER
I just checked the Milwaukee website to read-up on these and at the bottom of the description, it states " This product is no longer avaliable. It has been replaced with:" but nothing new appears after the statement.
Which doesn't happen when the bit just shatters like some of the yellow ones.
Torque isn't lost, its just delivered over a longer period of time.
I don't see how that's the case. Torque sticks, which are used to torque lug nuts, have different sized shafts specifically to limit the torque applied to the nut.
PhysicsDude
Well-known member
I think the assumption is that any reasonable impact driver has a lot more torque than you realistically need for a phillips fastener. The thin part acts like a torque stick so you don't break the tip or break the head off the fastener.
They're not a wonder tool, but they do seem to break less than conventional tips.
They're not a wonder tool, but they do seem to break less than conventional tips.
I'll try to explain that to my Bosch 1/4 drive impact, which needs every ounce inch of torque it has.
Maybe torque absorption is needed for people putting screws into soft material and the torque rises as the screw bottoms out?
My needs are the opposite, I'm taking old screws out and want all the torque.
Maybe torque absorption is needed for people putting screws into soft material and the torque rises as the screw bottoms out?
My needs are the opposite, I'm taking old screws out and want all the torque.
sberry
Banned
I wonder how I make it without them? Are these common drill bits? I go to a big flea once a year and there is a vendor shows up from Minnesota, somewhere like that who lives next to the place that makes them. They are USA, super tough, super sharp and cost about 1/4 what they are off the shelf in a box store. I buy a bag of smaller sizes for pilots, rarely sharpen them and if they done a lot of work toss them. He has grab bags of larger ones, pound, some discount price, some be odd size but they are even cheap enough to be disposable, they are easy to sharpen though vs the dinky ones. I do have an index and selection for special stuff but commons and this year bought a bag of 3/16 and 13/64, 10 of each.
They are cheap enough I treat them somewhat like consumables, like grinding wheels etc. I realize you can sharpen a bit for a long time but find with lots of crude brutal hand drilling the small ones tend to bust after a while.
I wired a steel building a while back. Used some beam clamps but a lot of bolts for boxes and clips. Hi cost job, lots of parts, all in the air. Used 3$ worth of bits for well over a hundred holes.
They are cheap enough I treat them somewhat like consumables, like grinding wheels etc. I realize you can sharpen a bit for a long time but find with lots of crude brutal hand drilling the small ones tend to bust after a while.
I wired a steel building a while back. Used some beam clamps but a lot of bolts for boxes and clips. Hi cost job, lots of parts, all in the air. Used 3$ worth of bits for well over a hundred holes.
DavidB
Well-known member
I agree with the guy above who said they're like small torque sticks. They twist and take some of the torque to avoid breaking the head off the screw or stripping the head or hole. With an impact it would probably hold the torque to some limit. With a drill it'd probably give you a brief bit of time to release the trigger when the screw head contacts the surface.
If you're trying to remove something I'd look to something else.
If you're trying to remove something I'd look to something else.
I wonder how I make it without them? Are these common drill bits?
Screwdriver bits.
Torque isn't lost, its just delivered over a longer period of time.
That's not how physics works.
The amount of force that is applied is the same either way, the force received is different based on torque vs torsion. In one scenario you have lots of torque and nearly no torsion, then with these "ShockWave" bits you have a lot of torque and little torsion up to a certain limit (this limit can be defined by a static calibration, which is the mechanical design and material of the bit) then the excess force you are providing is turned into a majority of torsion rather than torque.
Because this torsion robs rotational acceleration, less work is being done. This is because Work = force x distance, and force = mass x acceleration. Less acceleration, less force, less force less work.
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Ole Slewfoot
Well-known member
Springs store energy, which in this case is supplied as rotational torque.
Todd.Brock
Well-known member
I have the T-25 version. I just bought them and use them in my 18v impact driver. It’s a 4 pack from HD for about 5 bucks? They aren’t revolutionary or anything. Screws still go in and come out
Makita was the first manufacturer to come up with this concept that I'm aware of (2013). Their Gold line. They were designed for impact use with several features built in to deal with the breaking problem. Precise tip shape and a narrowed waist section to "give" when the tool strikes to lessen the shock delivered to the tip, thereby reducing breakage and extending life.
Finally managed to grab a set of #1 and #2 bits. I don't use them with an impact but they do grip fasteners well. As far as longer life I'll have to wait and see.
Good description at Tool Guyd.
http://toolguyd.com/makita-impact-gold-screwdriver-bit-set-review/
Finally managed to grab a set of #1 and #2 bits. I don't use them with an impact but they do grip fasteners well. As far as longer life I'll have to wait and see.
Good description at Tool Guyd.
http://toolguyd.com/makita-impact-gold-screwdriver-bit-set-review/