On 30 Jun 2015, at 18:01, Dave Caroline wrote: > I used to drive a capstan for long periods, getting the blade right > was key to less cleanup work, taper the end but the right amount for > your material, part drops off no pip, then over travel to clean the > bar pip. That was in my HSS days. > > I have now crossed over to a sandvick insert with is pretty damned > good even on on a manual lathe > http://www.greenwood-tools.co.uk/shopscr23.html > http://www.sandvik.coromant.com/en-gb/products/t-max_q-cut/Pages/default.aspx > That one gets my vote, for medium-to-large stock. 600rpm would be comfortably within its range for work up to about 40mm. It's my standard parting off tool. I switched from HSS some years ago, and have not regretted it. I believe HSS would provide a keener edge, but the carbide tool forces the chip inwards as it curls upwards, so it clears it out of the slot very effectively.
I use much smaller and thinner carbide blades for smaller diameters and softer materials: the Mini-Thin Grooving and Cut-Off inserts from MSC Industrial. The tips are fragile and they must be mounted exactly at right angles to the axis, but they work a treat in thicknesses from 0.5mm to 2mm. I mostly use 1mm with a straight front to the tip. Marcus > the inserts come in left right and flat forms, also reasonable for > turning in tight places > > I also hand grind HSS for tiny clock/watch parts, getting the edge on > centre is critical for good work > > Dave Caroline > > ------------------------------------------------------------------------------ > Don't Limit Your Business. Reach for the Cloud. > GigeNET's Cloud Solutions provide you with the tools and support that > you need to offload your IT needs and focus on growing your business. > Configured For All Businesses. Start Your Cloud Today. > https://www.gigenetcloud.com/ > _______________________________________________ > Emc-users mailing list > Emc-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/emc-users ------------------------------------------------------------------------------ Don't Limit Your Business. Reach for the Cloud. GigeNET's Cloud Solutions provide you with the tools and support that you need to offload your IT needs and focus on growing your business. Configured For All Businesses. Start Your Cloud Today. https://www.gigenetcloud.com/ _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
