I've had good luck with the high-spiral (aluminum specific) 2-flute cutters, but have not gone below 1/8" The cutters only have about 3/8" of cutting depth. Something like McMaster 8829A12?
DougM On Sun, Feb 12, 2012 at 5:10 PM, gene heskett <[email protected]> wrote: > Hi Guys; > > I just broke my last brand new 1/16th carbide end mill in about 15 minutes > running time, a 4 flute with about 1/2" of working length, trying to get > started on another alu encoder wheel, getting about 80% of the way around > the outside, running at 2500 revs, and 1.5 ipm, cutting only .005" deep, > running in a puddle of cutting oil. > > Obviously the 4 flute is a no-no in soft alu as it was pushing alu ahead of > itself for 90% of what it did cut which tells me it was half plugged after > the first 1/2" of feed in that heavy duty (0.0037" thick) coors can alu . > Filled up the flutes nearly instantly even if it was swimming in cutting > oil. > > So, I need to find a more suitable mill for this, I assume only 1 or 2 > flute, and maybe only 1/8" of working bit. > > Since I don't have a 10,000 rpm spindle, 2500 is it, what mill should I > buy, and how fast can I feed it? Or am I doomed to go find some harder > sheet alu that cuts cleaner and won't plug up a mill? > > Thanks. > > 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) > My web page: <http://coyoteden.dyndns-free.com:85/gene> > A man usually falls in love with a woman who asks the kinds of questions > he is able to answer. > -- Ronald Colman > > ------------------------------------------------------------------------------ > Try before you buy = See our experts in action! > The most comprehensive online learning library for Microsoft developers > is just $99.99! Visual Studio, SharePoint, SQL - plus HTML5, CSS3, MVC3, > Metro Style Apps, more. Free future releases when you subscribe now! > http://p.sf.net/sfu/learndevnow-dev2 > _______________________________________________ > Emc-users mailing list > [email protected] > https://lists.sourceforge.net/lists/listinfo/emc-users ------------------------------------------------------------------------------ Try before you buy = See our experts in action! The most comprehensive online learning library for Microsoft developers is just $99.99! Visual Studio, SharePoint, SQL - plus HTML5, CSS3, MVC3, Metro Style Apps, more. Free future releases when you subscribe now! http://p.sf.net/sfu/learndevnow-dev2 _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
