03-05-2015, 12:15 AM
(03-04-2015, 09:01 PM)Highpower Wrote: I liked your smoke trails too Dave. Looked like a miniature air show going on. Were the chips in the shape of miniature aircraft too?
Glad you liked them Willie
I think the chips must be aircraft shaped because looking at the smoke trails some seem to be doing loops. I always thought they came off in a slight curve not doing acrobatics
doesn't seem right to me I too use WD 40 on aluminum using carbide inserts and I also find the surface finish is much better. I think with aluminum the heat generated is much less than steel so the thermal stress is much less. Also the WD 40 stops the build up of aluminum on the cutting edge.
On the lathe I also use the same cutting fluid as on the mill (not really an oil ) and again it does improve the surface finish (not always
) which is what a cutting fluid suppose to do. I just don't think it gets hot enough to induce the thermal stress at the sort of speeds I use. Some guys use these mist type coolant systems ............seems to work.
Just to say I use WD40 on the lathe and on the bandsaw when cutting aluminum.
DaveH