gene heskett wrote: > > This particular sheet of alu seems to be dead soft. The chips it was > making looked about the right size spinning around in the oil. > Well, that may be the problem. You do NOT want to keep recutting the same chips. You want a steady stream of something to remove the chips. In some cases an air jet can be used, too. > I don't have water out there other than used. :) And no real drainage > system exists although I have considered just setting the whole mill into a > pan about an inch deep, if I could find a suitable pan. > OK, my Bridgeport has primitive drain basins at the end of the T slots, I return the coolant to the tank with hoses. If this is a desktop mill, you could probably find a plastic tray at the discount store that would suffice. > > Running under cutting oil, about 1/16" deep, is a shop that's showing 51F, > really s/b cold enough. But, the extreme slow feedrates cause localized heating. It is MUCH better to sip along on a fine cut than crawl along a deeper one, as the heat doesn't build up in the work that way.
I still don't understand the 1.5 IPM feedrate, that is way too slow. Now, maybe the gummy nature of this aluminum is such that it can't be cut at all. But, I think this slow feedrate is making things much worse. Maybe the long length of cut of this tool is the problem as others have mentioned. Jon ------------------------------------------------------------------------------ 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 Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
