kango chisel sharpening?

[steveo3002]

ive borrowed a kango concrete breaker , the chisel end is rather blunt looking , i have a bench grinder or angle grinders

would it need treating somehow after sharpening ? am i best off leaving it as is as i have no way of heating it etc

 

[slim_boy_fat]

ive borrowed a kango concrete breaker , the chisel end is rather blunt looking , i have a bench grinder or angle grinders

would it need treating somehow after sharpening ? am i best off leaving it as is as i have no way of heating it etc

For me, that's the important word - I'd not mess with it unless the owner either asked me, or agreed to my 'having a go'. I doubt you'd make a proper job without heat, but I'm only going by instinct.......

Sure someone will be along soon with the definite answer.

 

[Shox Dr]

Either would do, though it wouldnt stay sharp for long. Just get n use it

 

[steveo3002]

yeah i will okay it with the owner ...its not been looked after at all anyway

 

[wyn]

I've sharpened a couple of the K-hex type of chisels with a grinder. They don't really last long after sharpening.
I was using them on tarmac in a tarmac mixer, they would be blunt again in an hour or two.
I'm sure new ones were around £8.

 

[Spark plug]

In my experience, unless your removing plaster or render it doesn't realy matter if they are sharp as they don't stay sharp long anyway.

 

[BrokenBiker]

Brute force and ignorance generally makes a quicker job than sharp chisels with on of those things...and even if you did sharpen it it would only last an hour beforenit was dull again

 

[HMB]

Get a blacksmith to redraw it in a forge

 

[steveo3002]

its proper kango brand , 1 inch wide blunt nub of a chisel , its not overly impressive , chips bits off poor quality mixes , but got a decent lump and it just purred away , is there a knack to using them? trying to bust up fence post footings

 

[brightspark]

what size kango the 900 are supposed to break up to 4inch concrete. after that its the 2500 . a decent kango chisel will sharpen a few times and stay sharp. cheap crap ones are like cheese from the start . u get what u pay for

 

[Pete.]

Hire shops usually do exchanges. All ours are send out for sharpening and re-heat-treating.

 

[dannyp]

i've never sharpend one, nothing getting smshed into concrete stays sharp anyway and if the edge it to fine it'll just snap off.

if it's really struggeling help it out a bit by adding some flaws to the concrete, a grinder cut whever you can get at it will encorage the concrete to breack up when kangoed

 

[8ob]

Get a blacksmith to redraw it in a forge

Thats how they used to be done,then heated up and dunked in oil. I suppose these days they just get slung.

Bob

 

[Bill Edwards]

Can't you just do it with a bench grinder dunking it in a bucket of water every few seconds so you never lose the temper in the first place - like with any chisel, punch, drill etc?
Obviously not sharp to a point or it'll be gone in moments, but so it's got some angle to it.