Roughing end mills

[Raymond AndersonParticipant @raymondanderson34407]

Hi Folks, Have been making some more toolholders for me qctp and as all the dovetails are now completed I have started to cut the 25mm slots for the toolshanks. Decided to try a cutter that I was given a while back to try. A Guhring RS 100F Firecoated solid carbide rougher, The difference in performance over a conventional 2 or 3 flute mill is staggering. The biggest benefit I think is the greatly reduced cutting forces, I found using a standard 2 or 3 flute my Lux mill [ not the K &T ] was good for about 2.5mm depth of cut in the EN 16t . With the new rougher 6mm was easy on the machine [16mm Ø ] AND a faster feed rate.

I had known about them long ago but had never bothered trying one until now. There is no going back to the plain types now for deep slots or squaring off rough edges. Light cutting and finishing then yes, I will stick to the plain old 2, 3 or 4 flute. Anyone else on here used them often [ the roughers ]

Cheers.

[Raymond AndersonParticipant @raymondanderson34407]

Try out.

[Nick_GParticipant @nick_g]

.

I think that a few here have tried and place in high regard the ones sold by ARC.

I seem to recall that JasonB also made a short video of one chomping away with gusto.

Nick

[Mark CParticipant @markc]

Raymond, i almost exclusivly use ripper style cutters (the ones that look likethey have a thread on the flutes). They shred material, dont get as hot and generally last much better without coolant. I even like the fluted finish you get! The only time I use plain cutters is for fits on mated parts. The only down side is they tend to loose the corners off the cutting edgea but it is easy to take the corners off on an off hand wheel and restore them to even greater degrees of abusability…..
Mark
Ps. I get mine from Cromwell in cobalt rather than carbide as they are less brittle and still very tough

Edited By Mark C on 24/07/2016 11:54:41

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