On Monday, January 05, 2015 12:15:07 PM Pete Matos did opine And Gene did reply: > that is exactly right. I have a .040 radius cutter just like that here > I needed for a recent project and it is definitely not designed for > plunging. if you ramped in at a very shallow angle I am sure it might > would work in wood but in metal you are looking at a crash. This one > is double sided and makes a great radius in use. Also keep in mind > that as I have found on MOST of these style cutters the actual > profile of the bit is not the radius, actually the radius is there > but there is a little bit of extra length on the bottom and side/top > of the cutter edge to smooth the transition in case you do not get it > dead nuts perfect presumably. So your actual depth of cut needs to > be compensated for this distance. Most are also marked with the > actual ground non cutting middle diameter for your offsets. if you > stick them down with double sided carpet tape and then cut them apart > and follow up with the roundover it would be easy or if nothing else > leave a web in between below the level of the bottom of the roundover > cutter and do your roundover profiling first and then part them off > however you choose. That carpet tape is pretty damn sticky and I have > cut a lot of aluminum parts that were not extremely critical > dimensionally easily with it and then you can peel the parts off it > after the cutting is completed. Just some random thoughts. Peace > > Pete > I hadn't even considered that for parts this small as I have tried it before and its easier pushed around that I thought. Bigger stuffs, 2x2" or more would likely work ok, but these will only be 1/2" square when cut out, so I think I'll use the same code that carves the mahogany to make a holding jig in micarta or maybe even alu as I have some 1/2" thick 7078t6 scraps in the bottom drawer.
As for the ploughing, I had it figured to be at depth of cut as I approached the edge so I would not be plunging But that mill is almost $50 at MSC, double ended solid carbide. That, and delivery time discourages me. Thanks Pete. [...] Cheers, Gene Heskett -- "There are four boxes to be used in defense of liberty: soap, ballot, jury, and ammo. Please use in that order." -Ed Howdershelt (Author) Genes Web page <http://geneslinuxbox.net:6309/gene> US V Castleman, SCOTUS, Mar 2014 is grounds for Impeaching SCOTUS ------------------------------------------------------------------------------ Dive into the World of Parallel Programming! The Go Parallel Website, sponsored by Intel and developed in partnership with Slashdot Media, is your hub for all things parallel software development, from weekly thought leadership blogs to news, videos, case studies, tutorials and more. Take a look and join the conversation now. http://goparallel.sourceforge.net _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
