2012/6/12 gene heskett <ghesk...@wdtv.com>: > On Tuesday, June 12, 2012 06:36:40 AM andy pugh did opine: > >> On 10 June 2012 19:52, gene heskett <ghesk...@wdtv.com> wrote: >> > Imagine my surprise when that grade 8 bolt carved like butter, both >> > with carbide inserts and with HSS tool steel, leaving a mirror-like >> > finish. >> >> I was just sent this link, which is truly fascinating: >> http://youtu.be/mRuSYQ5Npek >> >> It shows how bad finishes can sometimes be formed due to material >> rolling under the cutting edge, and it is also fascinating how much of >> the time the effective cutting edge is made of the material itself. > > It also seems to confirm that the T.i.N plated tool is the better tool, at > least until the plating is worn away.
Not necessarily: at 2:24 there is uncoated HSS tool in ECR steel at 3:59 there is Ti coated tool in ECR steel I seriously doubt that the second picture would provide better result. Ti coating might have less friction, but all the cutting parameters - surface speed, depth, feed per revolution - also have big impact for particular material. And adding appropriate S word to increase spindle speed or changing the cutting depth does not cost anything, while buying Ti coated tool certainly does. -- Viesturs If you can't fix it, you don't own it. http://www.ifixit.com/Manifesto ------------------------------------------------------------------------------ Live Security Virtual Conference Exclusive live event will cover all the ways today's security and threat landscape has changed and how IT managers can respond. Discussions will include endpoint security, mobile security and the latest in malware threats. http://www.accelacomm.com/jaw/sfrnl04242012/114/50122263/ _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
