The simplest and first thing to check is if the slitting saw is perfectly centred on the mandrell. Then does the mandrell run true.

Do You mean 0.1mm per tooth?

This gives 8mm per rev on my best 100mm slitting saw.

There was a machine in one of our bays that was used for sharpening cold saw blades (think about 10-12" diameter when new). It used a cam system to push the blade round one tooth then move the grinding wheel in to sharpen a tooth before repeating the process. The problem with this was that after a number of sharpening cycles the blade was getting more and more off centre. in the end the machine was scrapped and the blades are now sent to an original blade supplied where they are sharpened by a CNC controlled system that maintains the concentricity for the life of the blade. Typical batch size sent for sharpening is 40 blades.

Martin C

Yes I do. Your figures imply 80 teeth on the cutter. I would regard that as a fine pitch cutter, not really suited to anyrhing other than shallow slotting. Here's a picture I took earlier:

The definition isn't clear cut (pun not intended, but couldn't resist it) but the slitting saw bottom right is fine pitch. I only use them for shallow slots, as on screw heads. The problem with deeper cuts is that the gullets get jammed with the swarf; equals a broken cutter. The other slitting saws shown are coarse tooth and will happily cut a deep slot in one pass. If I have a deep slot to cut I'll use a DOC of at least 10mm per pass.

As Jason says slitting saws won't be running fast. So if we take a coarse 100mm slitting saw with 36 teeth in mild steel it'll be running a bit under 100rpm. At 0.1mm per tooth that gives a feedrate around 360mm/min. In practice I run slitting saws slower than calculated, even with flood coolant there's some steam produced. I'd run a 100mm cutter at 60rpm and a proportionate feedrate.

Andrew