> From: Jon Elson [mailto:[email protected]] > On 02/19/2020 12:02 PM, John Dammeyer wrote: > > > > And soft castings from scrap aluminium like extruded old window frames is > a challenge unto itself. I too use WD-40 for that. Been thinking of just > using a > spray bottle with kerosene. Supposed to be just as good and much cheaper. > > > Ugh, some extrusions are anodized, so a very mushy pure > aluminum (1100) core with a really HARD outer skin. > That is extremely hard even on carbide cutters, and will eat > plain HSS in seconds. Even re-cast, it may contain > some of the aluminum oxide from the anodizing mixed into it. > > Jon
I must be doing something right. These came out really nice. A variety of scrap stock. http://www.autoartisans.com/mill/XAxis-AlmostDone1.jpg Flycutter wth carbide lathe tool for the surfacing. Clamped onto faceplate and bearing hole bored on lathe for the X axis. Boring head used on Y axis casting behind. The X axis is a two part casting because I wanted to be able to turn it on the lathe. The bearing clamps are bar stock. The bearing clamp holes and counter bores were all accomplished with the DRO using XY dimensions from the drawings. John Dammeyer _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
