Thread: Slitting saw bore sizes

22 and 27mm are European sizes I think. The most common size I've seen is 1"
There is nothing to say that you can't make up a couple of arbor sizes.

Michael

I thought that might be the case Michael. I'll go with 1" for my first arbor and maybe a 22mm later.

Originally Posted by Michael G

22 and 27mm are European sizes I think. The most common size I've seen is 1"
There is nothing to say that you can't make up a couple of arbor sizes.

Michael

Make a stepped arbor. Machine the cap hollow so that it will clamp on the largest diameter. It needs to be bored deep enough to clamp the largest blade without bottoming.

Mine is on a 3MT arbor and does 28mm down to 12mm in 1mm steps. The down side is the 16mm clearance needed under the blade.

Regards:
BaronJ

Imperial sizes seem to be 7/8", 1", 1 1/4"

Metric as written is 22 and 27..

Originally Posted by BaronJ

The down side is the 16mm clearance needed under the blade.

Hi baron,
I am making this type of arbor (thanks Michael G) which reduces the clearance required. Unfortunately I think it rules out a stepped arbor design:

https://www.woodworkforums.com/attach...99-medium-.jpg

Originally Posted by .RC.

Imperial sizes seem to be 7/8", 1", 1 1/4"

Metric as written is 22 and 27..

I also have some 12.75mm bore slitting saws, some of these are quite thin and only 40 mm diameter. (40x0.5x12.75mm). Also have some 60x1.0x16mm.

I originally bought one of those stepped arbors, a real PITA, not only clearance problems but out of round as well.

I have made an arbor for every slitting saw I have, not a lot of work in it and they are always ready to use.

Actually rather satisfying to make, and use, some of your own tooling.

Originally Posted by Big Shed

I have made an arbor for every slitting saw I have...

I saw in another thread you had made up a few arbors. Are the different saws for different materials? I initially figured a 100 x 1mm saw would cover all my needs. Do smaller saws have some advantages over larger ones? I see they also come in solid carbide.
Chris

I mainly use my slitting saws for the expandable mandrels I make (for closed end pen turning). The smallest of the is only 6.3mm in diameter and if I use a 1.0mm slitting saw the slot is far too wide, so I use the 0.5mm for that. I also make expandable mandrels with 4 rather than 2 slots and again the 1.0mm is too big for that.

OK, thanks.

5/8" 1" 1.1/2" ......Some screw slitting/slotting are smaller in some cases. Some also have weird sizes to lock you in to only buying their brand ....like the carbide tip people do. (And don't we all love them for that?)