Angle grinder scare

[David]

[RubberBiker]

The article doesn't give much detail - but it sounds like he got a massive kickback (not surprising at the rpm involved), presumably from a the kerf pinching up, or twisting the blade in the job. Presumably a

9" grinder.

How on earth was he positioned though for the blade to strike his neck? Maybe he was attempting to use it in a vertical chopping motion through a horizontal log, with the rotating blade in-line with his bodyline (and the blade (disc!) guard removed).

Nothing to stop the kerf gabbing the blade (i.e a riving knife), poor ergonomics to control the force of the kickback (because it's a grinder), no kickback protection (as on a chainsaw) - and bad luck to sustain a fatal injury, rather than a very scary warning.

[Dave]

think my question of what to do with the leyladii stumps is answered here.

Dave

[Owain]

[ericp]

>I think my question of what to do with the leyladii stumps is answered here. >

That will be circular saw blades banned from DIY use next tuesday then!

[Rod]

Lay them across your big brass bed.

Why wait any longer for the one you love When it's standing in front of you.

(Apologies Bob.)

[geoff]

In message , David writes

[Frank Erskine]

On Mon, 07 Sep 2009 22:37:56 +0100, [e-mail] had this to say:

>>>I think my question of what to do with the leyladii stumps is answered here. >>

Nah - all H&S legislation is only as a result of presumed incidents, never real ones.

I sympathise with the guy and his family (really) but where was 'common sense' in all this? Neither schools nor parents seem to play any part in inculcating any thought by their charges. H&S people positively discourage any 'messing about' with which people develop sense and thought - we're all being led to becoming zombies, it would seem.

Only this evening the local rag was hailing a few schools in the area which have become "Academies" (I thought they were supposed to be independent of the local authority, but it seems not), and only highlighted their dance studios and hair salons (oh - and computer suites - wow!) - never mind woodwork and metalwork shops, maths or science classrooms. In fact a friend of mine who retired from teaching a year or so ago assures me that science teaching at secondary level is now a dead duck. Ho hum.

[Owain]

That's be Microsoft Word 101 leading to a career in network engineering, I take it.

Owain

[John Stumbles]

beat me to it geoff :-|

[Frank Erskine]

On Mon, 7 Sep 2009 16:03:58 -0700 (PDT), Owain had this to say:

Yeah - like typing (with US spellchecking activated), probably.

How really, really sad. Seriously.

[The Medway Handyman]

Assuming a 9" grinder, it was prolly a 184mm dia blade - very popular & easy to find size. Can't be arsed to work out the edge speed at 6000 rpm - but I would scare me!

Instruction manuals are full of OTT safety advice, but it would take a very brave - or stupid man to fit a saw blade to an angle grinder.

[Pete Verdon]

I was somewhat bemused watching University Challenge this evening when Paxman read out a good clear description of what a carburettor does, and asked what was the name of this part of an engine. None of the students knew; the second answer happened to be right but was clearly mostly guesswork.

I'm only 28 but I already fear for the youth of today.

Pete

[ericp]

QVC were recently selling an accessory for angle grinders. It let you cut and sculpt wood. It was a circular blade with a chain saw chain wrapped around it.

[RubberBiker]

The one's I've seen are designed for *small* grinders, have a suitable tooth spacing for the rotational speed, *limiters in front of each tooth*, proper blade guards etc

see:

[Bob Eager]

I thought that when I saw it. OTOH, how many modern engines have carburettors? The answer 'injector' was given...

[Chris J Dixon]

But the first answer "injector" was probably correct for the equivalent function in the chap's own car.

Chris

[dennis]

You haven't looked at ICT in schools have you? Knowing M$ stuff makes it harder as they don't use M$ for exams and course work.

They don't use OO either btw.

[dennis]

My old car had what was a cross between a carb and fuel injection proper.. it had single point injection where they basically put one injector in the "carb". so injector was probably the correct answer.

Not having heard it did they state the fuel level was controlled by a float and that the venturi effect drew in the fuel and that it was metered by a tapered pin?

[Dave Plowman (News)]

Not really a cross. A carburettor sucks in petrol via some form of measuring jets. Single point injects a measured amount of petrol into the air stream.