Cold cut saw blade

[BoogerGrinder]

Hello,
While cutting up some steel for a project this weekend a piece I was cutting managed to come loose in the saw clamp. This resulted in the saw grabbing, jamming and breaking a tooth. Is this blade now destroyed? Is it safe to use? Can it be repaired?
Cheers

 

[frank horton]

not a prob unless the blade is bent....
even in industry they were used with missing teeth....
They can be replaced but if its cutting OK dont bother...

 

[zzr1200]

It'll cost more to repair than replace, unless you have a blade repair service in your town.

Keep using it make sure the clamp is tight and let the saw cut at it's own pace don't force it...

I always try to have a new spare blade in stock, just in case.

 

[BoogerGrinder]

Thanks for the advice. I will give it a go and see how it cuts.

 

[Hitch]

A good idea to cut in a different place, or finish the cut with a grinder if you fear you've lost a tooth in a cut. If its embedded in the steel, good chance of hitting it and damaging more teeth.

 

[Pete.]

We use them on the portable saws with several teeth missing. They rattle a bit but cut just fine.

 

[Screwdriver]

That doesn't look like a cold cut saw blade??

 

[mightymig]

This place does 350mm TCT blade sharpening for £15.60 including return postage, all you've got to do is send it em cheap.

They also repair teeth included in that price:

"We'll apply new teeth to your blade if required absolutely free, providing the number of teeth isn't greater than 5% of the number of teeth on the blade, after this teeth are charged at £3.00 ex vat each and you will be contacted for additional payment. For example with a 60 tooth blade we will replace 3 teeth for free and anything after is chargeable."

Planning to use them myself soon, disclaimer that I havent used them yet - but 99% sure I found them on here somehow. 10% off first go as well!

TCT Saw Blade Sharpening Grinding and Repair Service

TCT saw blade sharpening service for 85mm - 750mm diameter saw blades. We can service all types of TCT saw blades for cutting wood, plastic, aluminium and steel.

www.thesawcentre.co.uk

 

[Pete.]

That doesn't look like a cold cut saw blade??

Not if you're talking about the slow-speed HSS cutoff blades. It is one of the new breed of metal cutting TC blades which are also commonly referred to as cold cut blades.

 

[BoogerGrinder]

This place does 350mm TCT blade sharpening for £15.60 including return postage, all you've got to do is send it em cheap.

They also repair teeth included in that price:

"We'll apply new teeth to your blade if required absolutely free, providing the number of teeth isn't greater than 5% of the number of teeth on the blade, after this teeth are charged at £3.00 ex vat each and you will be contacted for additional payment. For example with a 60 tooth blade we will replace 3 teeth for free and anything after is chargeable."

Planning to use them myself soon, disclaimer that I havent used them yet - but 99% sure I found them on here somehow. 10% off first go as well!

TCT Saw Blade Sharpening Grinding and Repair Service

TCT saw blade sharpening service for 85mm - 750mm diameter saw blades. We can service all types of TCT saw blades for cutting wood, plastic, aluminium and steel.

www.thesawcentre.co.uk

This sounds great, but unfortunately I am not in the UK.

 

[BoogerGrinder]

Not if you're talking about the slow-speed HSS cutoff blades. It is one of the new breed of metal cutting TC blades which are also commonly referred to as cold cut blades.

Correct, the saw is a Bosch GCD 12 JL.

 

[Screwdriver]

Correct, the saw is a Bosch GCD 12 JL.

Cold cut at 1500 rpm? I sincerely doubt it. Cold cut typically refers to speeds around 100 rpm, these carbide chop saws are commonly referred to as dry-cut.

 

[BoogerGrinder]

Cold cut at 1500 rpm? I sincerely doubt it. Cold cut typically refers to speeds around 100 rpm, these carbide chop saws are commonly referred to as dry-cut.

There you go, you learn something new everyday. I can see why the the terminology gets mixed up though, no matter the cut, the end of the steel is cool to touch as soon as you are done.

 

[Screwdriver]

No worries, it's not just arguing over words for the sake of it. Cold cut saws run about the same speed as you would use a hacksaw. So if you had been sold a coarse tooth carbide tipped dry-cut blade for use in a cold cut chop saw, I wouldn't be at all surprised if it started throwing teeth off the blade!

Cold cut saws are frustratingly slow but incredibly precise. Perfect, almost machined finish, square plumb and flat once they're set up. But my god they are slow...

 

[Pete.]

These saws are considered not hot works. I had to go cut out a large steel chimney which had caught fire and collapsed almost causing a newsworthy disaster because it was stuffed with exotic materials which propagated the fire and melted the flue from within. The HSE got involved and stipulated no hot works for the remainder of the process and we got the job of getting the remainder down to a certain level. This is the tool we used.

 

[Screwdriver]

Well I guess that makes it a not-hot cut blade then don't it...

 

[mightymig]

It is a confusing name as they go on regular chop saws that could take an abrasive blade too, just the heat all goes in the chip and not the part so yeah... cold