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Is it insane to put a 15" blade on my 12" radial arm saw?

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Forum topic by thedudeabides posted 11-01-2009 04:30 AM 1979 views 0 times favorited 50 replies Add to Favorites Watch
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thedudeabides

75 posts in 1837 days


11-01-2009 04:30 AM

I know it’s not a good idea to monkey with this sort of thing, but I have a zero notch 15-inch blade and an old radial arm saw with a 12-inch freud diablo on it now. The 15-inch blade fits, and I’d only need it on temporarily to cut about a dozen annoying-to-cut 6×6 beams. If the horsepower can handle it, would there be any other reason not to do this? I’m just trying to understand the potential negatives before I even consider it.


50 replies so far

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a1Jim

112367 posts in 2274 days


#1 posted 11-01-2009 04:39 AM

#1 your saw is not designed for that kind of use. #2 you probably want to live a little longer. Most of the time people use chain saws or beam saws( still very dangerous if you not careful)

-- http://artisticwoodstudio.com Custom furniture

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cstrang

1772 posts in 1865 days


#2 posted 11-01-2009 04:43 AM

Please do not do this, think safety always!! As Jim said ”#1 your saw is not designed for that kind of use. #2 you probably want to live a little longer.”

-- A hammer dangling from a wall will bang and sound like work when the wind blows the right way.

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thedudeabides

75 posts in 1837 days


#3 posted 11-01-2009 04:43 AM

I can imagine it might burn out the motor, or the blade might not have enough power to cut through it, but from a safety standpoint, what do you think the dangers are?

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a1Jim

112367 posts in 2274 days


#4 posted 11-01-2009 04:55 AM

If it broke the arbor and in planted the blade between your eyes would your consider you might have made a mistake. Graphic I know but is cutting these 6×6 s that important to have any chance of serious injury. You must know someone with a chain saw thats how lumber yards cut them all the time.

-- http://artisticwoodstudio.com Custom furniture

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cstrang

1772 posts in 1865 days


#5 posted 11-01-2009 04:57 AM

It is all about torque really, a very powerful force and 15” blade can generate alot more than a 12” dado stack.

-- A hammer dangling from a wall will bang and sound like work when the wind blows the right way.

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GFYS

711 posts in 2168 days


#6 posted 11-01-2009 05:17 AM

OK I’ll be the odd duck and say I don’t think it’s a big deal. Makita makes a 16 5/16 circle saw. The blade fits his arbor…its made to fit that size arbor.

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lew

10100 posts in 2452 days


#7 posted 11-01-2009 05:22 AM

You know how a radial arm will tend to walk thru a piece. The larger the blade, the more likely this will happen and with even more force. When that little voice in your head says “I wonder if this is safe”- it probably isn’t.

-- Lew- Time traveler. Purveyor of the Universe's finest custom rolling pins.

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Dick, & Barb Cain

8693 posts in 2996 days


#8 posted 11-01-2009 05:23 AM

What would you do about a blade guard? This could be very dangerous.

The RPM may be wrong for that blade.

-- -** You are never to old to set another goal or to dream a new dream ****************** Dick, & Barb Cain, Hibbing, MN. http://www.woodcarvingillustrated.com/gallery/member.php?uid=3627&protype=1

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okwoodshop

443 posts in 1872 days


#9 posted 11-01-2009 05:28 AM

We have a saying in tennessee for this kind of stuff, it goes somethin like this—”hey ya’ll watch this S#%t”. And is usually followed by a scream and a 911 call. Putting this question on here is that little voice in your head.

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GFYS

711 posts in 2168 days


#10 posted 11-01-2009 05:32 AM

What would you do about a blade guard? This could be very dangerous.

hmm I run a saw with a 42 inch blade without a guard.

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thedudeabides

75 posts in 1837 days


#11 posted 11-01-2009 05:37 AM

Remember, there are no bad questions. I’ll probably just use the chainsaw, but before the Internet I’d have no way to know. Keep in mind, we’re not all master woodworkers in here, some of us are newbies who just want to make sure. For all I know it could be common to swap out blades for larger ones. The dumb thing would have been to just try it, the smart thing would be to post it in a woodworking forum to get advice first.

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okwoodshop

443 posts in 1872 days


#12 posted 11-01-2009 05:39 AM

AMEN

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a1Jim

112367 posts in 2274 days


#13 posted 11-01-2009 05:42 AM

“I run a saw with a 42 inch blade without a guard.”
Hmmm imagine that kick back!
We all do things are own way, some of us have better health insurance than others. LOL

-- http://artisticwoodstudio.com Custom furniture

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GFYS

711 posts in 2168 days


#14 posted 11-01-2009 05:44 AM

thedudeabides…I think you know what you can do or not..personally I might consider it given more information. But I have no idea what typo of experience you have so obviously I can’t suggest you do anything. Take care.

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Cosmicsniper

2199 posts in 1855 days


#15 posted 11-01-2009 06:22 AM

My dad’s RAS would choak itself and give up the ghost if it tried that, especially if it was tried in one pass. Then, my dad would kill me, if I didn’t get killed in the process.

I doubt your RAS will have the HP for it, which is why it is 12” in the first place.

If I were to try it, I would do it in two or more
passes. But at that point, you might as well use a regular blade and run two passes, top and bottom.

Come to think of it, what’s wrong with doing that? I do it all the time on my table saw.

-- jay, www.allaboutastro.com

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