tag:blogger.com,1999:blog-4746036612237842643.post8583453815543520308..comments2023-11-02T10:32:19.715+00:00Comments on Dan Heeks's Milling: Hardened SteelDan Heekshttp://www.blogger.com/profile/00912132320353856846noreply@blogger.comBlogger2125tag:blogger.com,1999:blog-4746036612237842643.post-68751863537462855252012-01-22T18:30:52.856+00:002012-01-22T18:30:52.856+00:00Thanks Roy. When you say 0.1mm cutters, do you mea...Thanks Roy. When you say 0.1mm cutters, do you mean the diameter of the effective flat at the end of an engraving cutter? What angle do the tips of your cutters have?<br />I am now cutting mild steel, so I hope it will cut quicker and deeper than this. I am trying tonight with 0.1 depth of cut ( instead of 0.2mm ) with 0.66mm/sec feed, but I only have 7k rpm maximum. You must have a very specialize machine to have 100k? ( mine is just a milling machine, so not specifically an engraving machine )Dan Heekshttps://www.blogger.com/profile/00912132320353856846noreply@blogger.comtag:blogger.com,1999:blog-4746036612237842643.post-91407476343757145452012-01-22T03:27:30.826+00:002012-01-22T03:27:30.826+00:00I cut titanium with tiny carbide cutters all the t...I cut titanium with tiny carbide cutters all the time. Titanium machines a lot like stainless steel. I use 0.1mm cutters.<br />If I machine deeper than 0.03mm/pass and 0.3mm/sec they break. And I'm running these cutters between 70 and 100k rpm. So I'm not surprised you break cutters....<br /><br />Yea, I also digitize the surface (to maintain a constant cutting depth)<br /><br />an example:<br />http://www.youtube.com/watch?v=Op_9kf_IoPoRoy Goodellhttps://www.blogger.com/profile/10308289849483089431noreply@blogger.com