Originally Posted by Rich Carlstedt Did you buy them on eBay
I bought some carbide endmills and they were snapping like popcorn
I believe that sometimes they unload the poor carbide on ebay.
when i used the same size cutter from MSC, it took the load no problem !
On 4 flute plunges, I never go deeper than 1/2 the cutter diameter.
A 2 flute will go 3 diameters, but those 4's cannot clear out the chips.
rich
I run down to 3/64 (.045 )too on carbide . |
Yeah, they're Ebay, but supposedly made in USA. The Chinese imports I have from Ebay seem to work okay too. I don't know, it just seems like maybe this entire lot is bad? I wrote the seller and am waiting to see what he says. I may try another one today and only plunge 1/2 of the diamter and see what happens, but there's just something else going on here because of the "squeal" these make when they touch and start to plunge - just doesn't sound right. I have some ball nose ones from another vendor that I may try, just to see if they work and sound differently.
Mark