How to slit on a mill?

[zaebis]

Folks,

I have a few projects that I need to slit a groove 0.10'-0.15' wide @0.5' - 0.7' deep in a stock. I need it done on a mill sliding going X or Y axis. I cant seem to find any R8 tools to do so? Can anyone point me in a right direction?

[bugdog]

Horn Tools

You can try these people maybe they might have some small slitting saw inserts.

Some of their boring bars go down to 0.3mm dia

Regards bugdog

[Glacern]

Slitting saw arbors are readily available with straight shanks that you can grip with an R8 or ER collet. You won't find as many arbors with R8 shanks.

[will gilmore]

http://www.victornet.com/store/Screw...Saws/1580.html

saws and r8 arbor

[will gilmore]

for the depth you want you might need to step up to a larger diameter saw depending on the OD of the arbor

http://www.victornet.com/subdepartme...iam-/1593.html

[PixMan]

For a slot of that depth I would strongly recommend using only a slotting saw that uses an arbor with a driving key. If budget allows, look at an insert-type saw that can really get through the part easily, such as the Valenite V350. The one that would work best would be a V350 A08 12 30 C09. It's a 4" diameter, 1.25" bore, takes "30" seat-size inserts. Inserts should be VSG 3.10 N30-SC. Grades are VP5815 for most materials, or VP5845 of it's a slower-speed spindle. Those inserts are a cut width of .123", right near the middle of your tolerance.

You'll need a stub arbor that fits your machine. You should be able to find an R8 stub arbor on Ebay. You'll probably need at least 2-3 HP to use it effectively, otherwise it'll take 2 or three depth passes. You can download the Valenite Milling Catalog (2007) from their website as a PDF file, and look for pages B3 for the cutter, B4 for the inserts. Those are the catalog page numbers, not the PDF file page numbers.