On Sunday 06 September 2009, 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 > Not sure Erik. What I've used here is the normal 'cutting oil' the pipe threaders use by the quart or gallon. Yes, if cutting fine cuts, it will sludge up,so I flush it by dribbling some more down the running bit. but the part finish seems to be ok. Heavier cuts, where the chips are say a .010" or more cross section, don't seem to suffer as badly.
My machine is an elcheapo, no wipers. Sawdust when doing wood seems to be a much larger problem as that glues itself to the way oils and really binds things up. I've had to run the tables clear off and clean things up several times. -- 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) The NRA is offering FREE Associate memberships to anyone who wants them. <https://www.nrahq.org/nrabonus/accept-membership.asp> Odets, where is thy sting? -- George S. Kaufman ------------------------------------------------------------------------------ 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
