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[4]

Slitting Saw Arbor/Holder

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Wxm88

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#1
Here is my simple version of the slitting saw arbor. It made of 7/8” aluminum round stock. It can accommodate the 5/8” bore blades up to 1/4” thick.

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David S

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#2
Got to take your word for it...since I can't see anything. :)

David
 

Wxm88

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#3
Lol, was trying to upload the pictures and you beat me to it. They are there now.
 

kvt

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#4
looks good, But looks like that blade might be missing a couple of teeth.
 

benmychree

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#5
Aluminum would be my last choice of material for an arbor, steel and even alloy steel is more to be desired.
 

Dave Smith

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#6
looks good--you could mill or file a couple flats on it to use a wrench to hold it while snugging your screw tight--it looks like your blade is on backwards for the teeth to cut, but my eyes may not be the best--Dave
 

Wxm88

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looks good--you could mill or file a couple flats on it to use a wrench to hold it while snugging your screw tight--it looks like your blade is on backwards for the teeth to cut, but my eyes may not be the best--Dave
Yes, you were correct. It was a broken blade and I was just testing on tightening it...
 

Wxm88

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#9
Aluminum would be my last choice of material for an arbor, steel and even alloy steel is more to be desired.
Yeah, I need to cut a split slot, and aluminum was the only material in hand. Anyway, it did serve the purpose, will see how it goes. The worst case is to make another when I have tool steel in hand.
 

mmcmdl

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#10
I take it you are referring to a slitting saw and not a split saw ? Gotta go with steel and a good grade at that . Nice job though and it worked which is the main thing .
 

benmychree

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#11
looks good--you could mill or file a couple flats on it to use a wrench to hold it while snugging your screw tight--it looks like your blade is on backwards for the teeth to cut, but my eyes may not be the best--Dave
Yes, it is backwards, cutting forces would unscrew it in use.
 

benmychree

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#12
I take it you are referring to a slitting saw and not a split saw ? Gotta go with steel and a good grade at that . Nice job though and it worked which is the main thing .
Actually, that saw is a screw slotter, not a slitting saw which would have way fewer teeth and consequently more chip space; screw slotters are made for shallow cuts as in straight slotted screw heads.
 

benmychree

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#13
looks good, But looks like that blade might be missing a couple of teeth.
A few missing teeth is no big deal, its when the saw breaks in half that there is a problem!
 

benmychree

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#15
Pun intended! Once I saw a whole gang of slitting saws, like 6 or so do that; the guy was slitting physical test coupons (for Charpy impact test pieces) on a piece of junk Cincinnati #5 mill from the WW-1 era, something jammed up and it took out all the 1/8 X 6 slitters; the bosses were not pleased, to say the least.
 

Wxm88

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#16
I take it you are referring to a slitting saw and not a split saw ? Gotta go with steel and a good grade at that . Nice job though and it worked which is the main thing .
You are right. It is fixed. Thanks.
 

Ulma Doctor

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#18
Nice Work Wxm88!
sweet use of what you have around the shop :grin:
 

EmilioG

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#19
Nice tool but what you don't want in a slitting saw arbor is too much run out, which will affect the cutting action.
Let us know how it works out. I've never seen an aluminum arbor.
 

Wxm88

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#20
Nice tool but what you don't want in a slitting saw arbor is too much run out, which will affect the cutting action.
Let us know how it works out. I've never seen an aluminum arbor.
I don't really have much application of slitting, and I am hoping to get away with aluminum for my occasionally use. Plus, I left enough material so that I can reshape it necessary.
 

Bob Korves

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#21
I saw a very good way of assuring zero runout on a slitting saw on a mill. I believe it was posted by WreckWreck.

Mount the arbor in the mill. Mount a turning/facing lathe tool in the mill vise. Do a cleanup cut on the arbor deep enough to have a new support for the slitting saw. Face the end to length. Install the saw and go to work.
 

EmilioG

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#22
Interesting idea Bob but won’t that arbor now be specific to that mill? I wouldn’t do this to a nice commercial arbor, maybe a shop made?
Not poo pooing the technique. Just asking. :)
 

Bob Korves

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#23
Interesting idea Bob but won’t that arbor now be specific to that mill? I wouldn’t do this to a nice commercial arbor, maybe a shop made?
Not poo pooing the technique. Just asking. :)
The tool gets cut each time it is installed. Only a few thousandths are necessary to clean it up each time. That approach takes spindle runout and arbor runout completely out of the equation (within reason.)
 

Wxm88

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#24
Yeah, It might come to that (cutting before every use) if necessary. I really don’t use the splitting that much, and would not think twice if I have to re-shape the tool for the round out.
 
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