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Sharpening circular saw blades

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JohnArnoldBrown

from United Kingdom

Joined: 03 Dec 2005
Posts: 72
Location: Surrey,
United Kingdom

PostPosted: Tue Mar 27, 2007 9:43 am Reply with quote

Is it worth having 250mm TCT circular saw blades resharpened, or is it cheaper to just replace them? The blades in question are Freud, and cost around 35 each.
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crazycanuck

from Canada

Joined: 01 Mar 2007
Posts: 205
Location: Canada

PostPosted: Tue Mar 27, 2007 2:17 pm Reply with quote

its up to you sharpening will probably cost up to 50% of blade, buy a cheaper throw away blade and keep yours for rough work
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JohnArnoldBrown

from United Kingdom

Joined: 03 Dec 2005
Posts: 72
Location: Surrey,
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PostPosted: Tue Mar 27, 2007 2:47 pm Reply with quote

Well I guess if it would cost that much in Canada it would be twice as much over here, but I don't want a cheaper blade, I really like the smooth cross-cut I get from this Freud LP40M.
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Jasonb

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PostPosted: Tue Mar 27, 2007 5:09 pm Reply with quote

Probably cost about 15 without looking up how many teeth your blade has, will cut as good if not better once sharpened.

If you are in my part of surrey try Delta Power tools in Warlingham, usually 7day turnaround as they don't do it themselves. Otherwise look for "Saw Doctors" in yel pages.

Jason
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JohnArnoldBrown

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PostPosted: Tue Mar 27, 2007 6:24 pm Reply with quote

Thanks, Jason. It has 60 teeth, and it's still cutting well, but I accidentally found a screw yesterday, which set me wondering about sharpening services.
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anobium

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PostPosted: Wed Mar 28, 2007 6:28 pm Reply with quote

Have you thought of doing it yourself?
All you need is a good flat file and a piece of wood to wedge the blade whilst you file each tooth.
I do it and it works perfectly.
PS just remember to unplug the saw before you start.
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Jasonb

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PostPosted: Wed Mar 28, 2007 6:39 pm Reply with quote

As The tungsten carbide teeth are harder than your average file, even a saw file I don't think the OP will have much luck. You would need a diamond file to touch up the teeth and need to take equal amounts off all 60 teeth on both the face and top bevel - 120surfaces icon_exclaim.gif

Jason
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Scrit

from United Kingdom

Joined: 21 Dec 2005
Posts: 1094
Location: Lancashire,
United Kingdom

PostPosted: Wed Mar 28, 2007 6:47 pm Reply with quote

anobium wrote:
Have you thought of doing it yourself?
All you need is a good flat file and a piece of wood to wedge the blade whilst you file each tooth.
I do it and it works perfectly.
PS just remember to unplug the saw before you start.

icon_lol.gif icon_lol.gif icon_lol.gif icon_lol.gif
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anobium

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PostPosted: Thu Mar 29, 2007 12:07 pm Reply with quote

None of you guys ever sharpened or set a saw.
You will be telling me next that you send your hand saws away to be sharpened, or even worse you buy those throwaway type from B@Q.
Tsk tsk tsk icon_lol.gif icon_lol.gif
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Scrit

from United Kingdom

Joined: 21 Dec 2005
Posts: 1094
Location: Lancashire,
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PostPosted: Thu Mar 29, 2007 1:38 pm Reply with quote

anobium wrote:
None of you guys ever sharpened or set a saw

Even in the days of CV (chrome-vanadium, remember them) circular saw blades most joiners sent them out as they require a specialist grinder to sharpen. However, there is no way you can hand sharped a carbide-tipped circular saw. Period. There are four facet angles per tooth times however many teeth. Get the angles wrong and the blade cuts like sh*t. And last time I looked saw files didn't work on carbide tips......

anobium wrote:
You will be telling me next that you send your hand saws away to be sharpened, or even worse you buy those throwaway type from B@Q.

Don't we?



and for your benefit that is a pre-WWII Disston in a Disston saw vice. icon_lol.gif

Scrit
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Jasonb

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PostPosted: Thu Mar 29, 2007 5:09 pm Reply with quote

anobium wrote:
None of you guys ever sharpened or set a saw.
You will be telling me next that you send your hand saws away to be sharpened, or even worse you buy those throwaway type from B@Q.
Tsk tsk tsk icon_lol.gif icon_lol.gif


The OP was asking about TCT circular saw blades, if you can tell us your method for hand sharpening them that would be great.

Jason
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JohnArnoldBrown

from United Kingdom

Joined: 03 Dec 2005
Posts: 72
Location: Surrey,
United Kingdom

PostPosted: Thu Mar 29, 2007 5:33 pm Reply with quote

Hey! Enough already! My question has already been answered comprehensively by Jasonb, whose opinion I respect(because I've seen those pictures of his work).
Maybe anobium is thinking of high speed steel circular saw blades or something. To change the subject, I asked in another thread if anyone had an opinion about Tornado router bits from Rutlands, but didn't get much response. Surely someone must have tried them!
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Jasonb

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PostPosted: Thu Mar 29, 2007 5:50 pm Reply with quote

Tend to stick with Wealden and the odd CMT bits.

Jason
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anobium

from United Kingdom

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PostPosted: Thu Mar 29, 2007 6:28 pm Reply with quote

My apologies lads, I stand corrected, for some reason I missed the tct reference, but honest I do resharpen my high speed blades and they cut perfectly. icon_redface.gif icon_redface.gif

Scrit when did you last use that saw, not recently I think, and the teeth, from what I can see look slightly uneven.
Interesting saw vice but not as good as a wooden home made one which keeps all the blade rigid. icon_wink.gif icon_wink.gif
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Scrit

from United Kingdom

Joined: 21 Dec 2005
Posts: 1094
Location: Lancashire,
United Kingdom

PostPosted: Fri Mar 30, 2007 12:01 pm Reply with quote

anobium wrote:
Scrit when did you last use that saw, not recently I think, and the teeth, from what I can see look slightly uneven.
Interesting saw vice but not as good as a wooden home made one which keeps all the blade rigid. icon_wink.gif icon_wink.gif

That was taken just before I started to top and refile it. Every time I buy and old saw they're the same - badly out. As to rigidity - you just move the blade along a bit when you need to.

Incidentally how do you set your CV blades? I haven't seen a circular saw anvil setter for thirty odd yaers

Scrit
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