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how to determine the hook angle on a saw blade?

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Forum topic by HokieMojo posted 10-25-2010 03:16 PM 2209 views 1 time favorited 4 replies Add to Favorites Watch
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HokieMojo

2103 posts in 2476 days


10-25-2010 03:16 PM

I bought a radial arm saw a little while ago and it came with an unlabeled blade. I was wondering if it is realistically possible to determine the hook angle on the blade without any special tools. my guess is that there probably isn’t an easy way, but some of you guys are pretty good at figuring out great solutions to problems like these.
Thanks!


4 replies so far

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HokieMojo

2103 posts in 2476 days


#1 posted 10-25-2010 09:17 PM

Thanks, but I’m not sure if I was clear with what I’m trying to find. I’m trying to find out how I measure the angle on a blade. It is such a small surface, I don’t think putting a straightedge to it will give me an accurate measurement.

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PurpLev

8476 posts in 2396 days


#2 posted 10-25-2010 09:25 PM

you can take a string from the center of the blade (arbor hole) to the tip of the tooth. stretch the string , and use a angle gauge to check the angle.

-- ㊍ When in doubt - There is no doubt - Go the safer route.

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knotscott

5601 posts in 2123 days


#3 posted 10-26-2010 12:47 AM

A RAS should have a blade with a hook angle that’s near zero degrees, roughly -5° to +5° (it doesn’t have to be negative, but it shouldn’t be a steep positive angle), which should be fairly easy to identify just from looking at it. If you want better precision, the methods Purplev and Bently suggested should work pretty well.

-- Happiness is like wetting your pants...everyone can see it, but only you can feel the warmth....

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HokieMojo

2103 posts in 2476 days


#4 posted 10-26-2010 08:18 PM

I like these ideas. I’m going to give them a shot. I really have no idea what angle the current blade’s hook is. I wish there was at least some kind of markings on the blade to determine the manufacturer too. I could be wrong, but want to assume that if there are no markings at all, it is probably a pretty cheap blade anyway. I don’t know any quality manufacturers that don’t put their name on their own blades.

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