R.L. Wurdack wrote: > I cut a lot of 6061and 7075 dry, but for finish cuts I use a little A9. Most > of the parts I make are small. I get a mirror finish with a light final cut > and just a brushed on coat of A9. I use it for tapping, drilling, and > reaming as well. It smells pretty vile, but not as bad as coal oil. > > Dick > > >> 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 > > What is neat oil. I've never heard that term before? Doug
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