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
