First mill project - slitting tool advice

[r-mm]

How does this look? How would I pick between 56 and 72 teeth?

Slitting Saws, 0.091" Thick, 2-3/4" Mill Diameter, 72 Teeth

McMaster-Carr

McMaster-Carr is the complete source for your plant with over 595,000 products. 98% of products ordered ship from stock and deliver same or next day.

www.mcmaster.com

 

[r-mm]

You can get 2.5mm wide slitting saws , doing a 10mm deep slot with a 2.5mm end mill sounds like a very bad time indeed

Stu

McMaster skips from 2 to 3mm. The slot width neednt be very precise here it just holds a 2mm thick clockspring tang.

 

[mmcmdl]

72 for steel , 56 for aluminum . These saws need to evacuate chips easily . Air , flood coolant , oil on a brush etc . Take the cut in one shot . DO NOT CLIMB MILL ! Conventional only .

 

[mmcmdl]

If you don't have arbors you can make them quite easily if you don't want to purchase them .

 

[r-mm]

Thanks all. The arbor needs a keyway no? I say that based on the image of the saw. Ive not handled one.

Was going to buy this one:

Straight-Shank Arbor for Slitting Saws, for 1/2", 5/8", 3/4", 7/8" and 1" Arbor Diameters

McMaster-Carr

McMaster-Carr is the complete source for your plant with over 595,000 products. 98% of products ordered ship from stock and deliver same or next day.

www.mcmaster.com

 

[mmcmdl]

Nice one ! Keyway isn't really necessary unless hogging out some big time material . You can use a lock washer under the blade if you choose , never had one loosen up in 48 years . Just keep clearing the chips .

 

[stupoty]

McMaster skips from 2 to 3mm. The slot width neednt be very precise here it just holds a 2mm thick clockspring tang.

I'm seeing them from metric land suppliers but maybe they are more difficult to find in America ?

https://www.protool-ltd.co.uk/p/16892?gad=1

Stu

 

[MrWhoopee]

If I was doing it, given its purpose, I would bandsaw and file that slot.

 

[RJSakowski]

I'm seeing them from metric land suppliers but maybe they are more difficult to find in America ?

https://www.protool-ltd.co.uk/p/16892?gad=1

Stu

2.5mm is .0984" . A .100" end mill would work. Another option and perhaps better,would be to use a 3/32" (..0938") and make two or three passes. The first down the center and then two cleanup passes for the sides.

 

[RaisedByWolves]

Thanks. Did not know slotting end mills existed. The depth of cut may be limiting, when I search for 2.5mm or equivalent inch size the depth of cut is typically not sufficient. Is there a reason not to take multiple passes with a slitting saw?

It will wander and even if it doesn’t you’re still left with standing portions between the cuts.

Keep looking, there are very large slotting saws available.