Is there such a thing as an impact screwdriver that you can hit with a
hammer (as opposed to the £££ for an electric one)?
I'm removing some old cast-iron guttering and no way the screws will
undo so may have to rip them out. Unless an impact driver exists...
They do. Mine cost a couple of quid from a market stall <mumble> years ago.
Try your local decent car parts shop or google "impact screwdriver" and
the shopping results show a dozen on the first couple of pages.
Ditto. I'd just grind out the bracket and screw head until the bracket slips
off, so that you can put the tools down while everything is still supported
and use two hands to ease it all free. Then you can either grip the
remaining screw shank with a mole wrench to see if it will unscrew it, or
failing that, grind it off flush.
To do what?
Cordless impact drivers are mostly used to drive large screws into
wood (although they're not bad on stuck metal-to-metal fasteners), or
drive auger bits into wood.
Old-fashioned mechanical hit-with-a-hammer impact drivers were
intended for loosening corroded fasteners - for small/home outfits
that didn't have pneumatic impact tools.
On Tue, 12 Apr 2011 06:10:04 -0700, firstname.lastname@example.org wrote:
If the screw heads are in good condition, they usually stay that way. If
they're not, the impact driver is what gets them out.
As I said, I still have mine. The Honda CB72 is long gone - with its
replacement Allen head screws!
Use the BIG mirror service in the UK:
The sort you hit with a hammer have a very strong pre-load spring. You
have to hit them very hard indeed before this is compressed enough to
make the bit turn - too hard for cast-iron guttering, I'd suspect.
But yes - they look like this...
And how many times have you used it since?
(I bought one probably in the early 80's and have used it about twice...
found more use for the bits from it when I discovered they fitted in the
chuck of the old B&D drill and could whizz screws in!)
Ah, but it's one of those tools where the least times you have to use
it the better! :-)
Given how cheap they are I'd say they are also a worthwhile one to
have around 'just in case' as I suspect many people, like me, had the
inconvenience of having to go out and buy one as a last ditch effort
to shift a particularly stubborn nut/bolt.... When working on the car
I am now quick to resort to it if there's any danger of me rounding
off whatever it is that's stuck by using conventional methods!
On Tue, 12 Apr 2011 08:38:44 -0700 (PDT), Mathew Newton
Thanks for all the pointers. The Machine Mart one looks fine, will get
one of those. btw The screws are the ones that hold the brackets to
the facia - nothing to do with the gutter itself - sorry didn't make
I was trying to imagine how it would feel to be bashing at an impact
driver up at gutter level while leaning back on a ladder......Hmmmm -
I'd go for the grinder, I think....although i once nearly took a
finger off grinding a steel tank 10 feet off the ground, but that's
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