I machine some very soft AL (99.99+% AL). It's impossible to machine without lubricant. I just use some no-name cutting lubricant (Probably similar to WD-40), that we also use it for tapping. Without this kind of lubricant the cutting heads (3-fl endmills) gum up within seconds.
On Sun, 2009-09-06 at 18:29 +1000, Erik Christiansen wrote: > On Sat, Sep 05, 2009 at 02:19:50AM -0400, Gene Heskett wrote: > > > > Hard grades of alu can be cut at faster feed speeds but requires the > > surface > > be well flooded to preserve the finish and exclude as much oxygen from the > > cut as is possible. That of course we all know. > > Having just produced a shoebox full of Al swarf, cutting dry, I am > abashed. But "suds" is reputed to get into felt slide wipers, and rust > intermittently used machines, so I've never used that. An attempt to use > neat oil resulted in gluggy heaps of aluminium porridge encumbering the > tool. Is thinner oil the answer? > > Erik > > ------------------------------------------------------------------------------ > Let Crystal Reports handle the reporting - Free Crystal Reports 2008 30-Day > trial. Simplify your report design, integration and deployment - and focus on > what you do best, core application coding. Discover what's new with > Crystal Reports now. http://p.sf.net/sfu/bobj-july > _______________________________________________ > Emc-users mailing list > Emc-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/emc-users ------------------------------------------------------------------------------ Let Crystal Reports handle the reporting - Free Crystal Reports 2008 30-Day trial. Simplify your report design, integration and deployment - and focus on what you do best, core application coding. Discover what's new with Crystal Reports now. http://p.sf.net/sfu/bobj-july _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
