As a comparison I typically route wood at +/-100ipm [80-130 typically] and 1/2" cutter at 1/2"-3/4" DOC. At these speeds a full cut is possible, but you need to be cranking at 18K or so [using a 3hp spindle]. This equates to a 0.011" chip on a bit w/ two cutting edges (100ipm x 2)/18000rpm= 0.011"/edge.
2500rpm at 8ipm is a 0.0016" chip [assuming the two cutting edges again] I'd think if you ran it faster [IPM] it would work better and last longer. When I'm done cutting I can grab the cutter right out of the spindle and its not even hardly warm [certainly not 'hot']. They don't last forever but I have been able to get many thousands of inches from a good quality carbide router bit. This is in cutting both MDF and various solid and laminated woods. FWIW Jarrett Johnson ----- Original Message ----- From: gene heskett <[email protected]> Date: Thursday, April 28, 2011 11:31 am Subject: Re: [Emc-users] Router Cutter v Milling Cutter > On Thursday, April 28, 2011 12:51:58 PM BRIAN GLACKIN did opine: > > > I use solid carbide 2 flute up spiral bits (1/8") in MDF for > cutting out > > all kinds of stuff. I usually get several ours of continous cutting > > out of a bit (1/8" deep passes at 30-50IPM). > > > So have I, and have broken a couple trying to cut faster than I > have > spindle rpms for & 1/4" deep, probably pushing my luck a lot > farther than I > got with the bit. :) One got so dull it was smoking for the last > 1/4" it > cut before it snapped off at the face of the collet. 2500 revs, > about 8 ipm > just doesn't cut it. > > > Hope that adds a data point. > > > And here is another. > > -- > Cheers, Gene > "There are four boxes to be used in defense of liberty: > soap, ballot, jury, and ammo. Please use in that order." > -Ed Howdershelt (Author) > <http://tinyurl.com/ddg5bz> > <http://www.cantrip.org/gatto.html> > Have you noticed that all you need to grow healthy, vigorous grass > is a > crack in your sidewalk? > > ------------------------------------------------------------------- > ----------- > WhatsUp Gold - Download Free Network Management Software > The most intuitive, comprehensive, and cost-effective network > management toolset available today. Delivers lowest initial > acquisition cost and overall TCO of any competing solution. > http://p.sf.net/sfu/whatsupgold-sd > _______________________________________________ > Emc-users mailing list > [email protected] > https://lists.sourceforge.net/lists/listinfo/emc-users > ------------------------------------------------------------------------------ WhatsUp Gold - Download Free Network Management Software The most intuitive, comprehensive, and cost-effective network management toolset available today. Delivers lowest initial acquisition cost and overall TCO of any competing solution. http://p.sf.net/sfu/whatsupgold-sd _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
