SPEED TIGERCarbide Square End Mill - 4 Flute - IPVE1/4 4 (1 Piece, 1/4") - Unequal Flute Spacing & Helix Design - Anti-Vibration - for Stainless Steel - Mill Bits Sets for DIYers & Professionals

I used a lot of cutting oil, but this done the job I needed it to do. Very, very happy with this end mill. Fits perfectly in my drill press.

Works good

I've tried at least a dozen carbide tipped cutters (reciprocating blades etc.) that claimed to cut cast iron, all of them dulled or broke (lost teeth) after 6 or 7 cuts (up to 3/16" thick). Yes, at slow speeds with cutting oil.This is the only one that still cuts after dozens of uses.

I will buy more from this company. Compared to what I have been using this tool is amazing.

I've gone through my share of endmills and they always burn up as with a 24k rpm spindle, going less than 3000RPM is not easy as the torque available is almost nil. I bought one of these for hardened steel and stainless steel I needed to mill and this endmill I've got actual cutting time so far 6 hours contact in hardened steel and 11 hours in stainless steel total and this still cuts like a hot knife through room temperature butter. 3137 rpm at around 650mm/min works great in either metal. 1st order from this company and won't be my last, in fact all my purchases will be from this company.

I use this as a router bit and it's incredible. I've routed fir, oak, mahogany, aluminum, brass, and thin mild steel. After 3 months of occasional use (only about 5 minutest a day averaged out) it's still about as sharp as new. I use it primarily to open up strike plates for customers whose doors aren't closing properly and it's been a godsend. Try it out; what have you got to lose?

Perfect as described

I ordered a set of high-speed steel bits and found them to be woefully inadequate. I ordered and received these bits to find that they are sharp and cut much cleaner than the HSS. I strongly recommend buying these as individual components versus the set I bought direct from the mill manufacturer.