TC tipped sawblades

[Anthony KnightsParticipant @anthonyknights16741]

I've just purchased a new TC tipped circular saw blade for my mitre chop saw which I use mainly for cutting firewood. I noticed in the inevitable H&S leaflet that accompanied it, that resharpening is not permitted. Is there a genuine reason for this or is the Manufacturer just trying to increase sales.

I should point out that I have a cutter grinder set up in my workshop ,which is perfectly capable of accurately putting a new edge on the teeth. I will be having a go at sharpening the old blade anyway.

[Anthony KnightsParticipant @anthonyknights16741]

Sharpening

[JasonBModerator @jasonb]

Can't see why unless its a cheapie with such small bits of carbide that its not worth it, I get all my ones work ones sharpened

[FMESParticipant @fmes]

Hi Anthony,

I have had many of these sharpened at a company that specialises in doing it, but its almost impossible to do it properly without the proper jig / grinding machine.

There is always another thought that the tips are brazed in and can become unsecure if the grinding overheats the tip.

I think they are just trying to prevent them from being sharpened inappropriately.

Lofty

[Russell EberhardtParticipant @russelleberhardt48058]

For use on wood there will be very little wear but you do need a very sharp cutting edge to get a good finish (but not necessary for firewood!). Usually a few strokes by hand with a diamond lap is sufficient.

Russell.

[Sub MandrelParticipant @submandrel]

I imagine it's just a disclaimer in case someone makes a right hash of sharpening and has an accident.

File in the same place as 'no user servicable parts inside'.

neil

[Jeff DaymanParticipant @jeffdayman43397]

Bear in mind that a diamond, CBN or SiC green grit wheel will be needed for sharpening carbide.

White or pink aluminum oxide wheels won't touch it.

If it is truly dull I would take it to a saw shop, but get a quote from them first before telling them to go ahead- these days sharpening often costs more than a new blade.

Just my $0.02. Your mileage many vary.

JD

[Anthony KnightsParticipant @anthonyknights16741]

Thank you for your replies gentlemen. I do have the correct green grit and diamond wheelson my grinder and have already sharpened slitting saws. I like to have sharp blades as this reduces the strain on the motor. The chop saw is a cheepie I aquired from the now defunct Focus DIY outfit.

[Aestus57Participant @aestus5782081]

Just as an aside to this; I have an acquantance who has cut a tooth out of a similar blade and uses it as quite an effective parting tool. or ?

[KWILParticipant @kwil]

I presume he now has 99 other spare parting blades (teeth) should the need arise! He must be a fellow Scot.

[Ian S CParticipant @iansc]

I use the teeth from rejected blades, brazed onto steel and used as lathe tools, they are good for making small boring bars, most of my blades come from Skil saw type machines. Ian S C

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