Excellent video, been thinking about getting a lathe for ages, probably going for one of these. Great videos will watch them all. very informative. Thanks for taking the time to make them. Very enjoyable !
You have minimum requirements written on back side of the inserts. I usually use ~1mm DoC, ~.25mm/rev and ~145m/min surface speed. If I need to do under .7mm DoC I choose HSS instead. When I need good surface finish BTW.
Hi Mark. I have the exact same lathe as you. However I am not suffering the same finish issues as you. These Insert tip tools like to be loaded. I recommend 1mm to .8mm roughing cuts and between .1 and .25 finishing cuts. speed between 800 - 900 RPM. Also with your toolpost at an angle you are messing with the tools natural geometery. These types of tool are designed to be held square. Another problem may be you material grade. Hope this helps
Hi BBR, Thanks for watching and your reply. I've been doing some more work on the finish and agree with most of what you've written above. I'll be posting another video on the finish in the next day or so. The best result I've had so far has been .2mm cut at either 800 or 1200 rpm, anything lighter in terms of depth and the quality really does fall off. I've never had issues with the tool angle before using these Glanze tipped blades, but I'll give that a go and see if it makes a difference. Cheers Mark
Excellent video, been thinking about getting a lathe for ages, probably going for one of these. Great videos will watch them all. very informative. Thanks for taking the time to make them. Very enjoyable !
You have minimum requirements written on back side of the inserts. I usually use ~1mm DoC, ~.25mm/rev and ~145m/min surface speed. If I need to do under .7mm DoC I choose HSS instead. When I need good surface finish BTW.
Thanks. Helpful video and comments.
Hi Mark. I have the exact same lathe as you. However I am not suffering the same finish issues as you. These Insert tip tools like to be loaded. I recommend 1mm to .8mm roughing cuts and between .1 and .25 finishing cuts. speed between 800 - 900 RPM. Also with your toolpost at an angle you are messing with the tools natural geometery. These types of tool are designed to be held square. Another problem may be you material grade. Hope this helps
Hi BBR,
Thanks for watching and your reply.
I've been doing some more work on the finish and agree with most of what you've written above. I'll be posting another video on the finish in the next day or so. The best result I've had so far has been .2mm cut at either 800 or 1200 rpm, anything lighter in terms of depth and the quality really does fall off. I've never had issues with the tool angle before using these Glanze tipped blades, but I'll give that a go and see if it makes a difference.
Cheers
Mark
GREAT :-) What a case, I made allmost the same video last week, ah,ah,ah... take care
Good Video. I would be running faster, around 1300rpm and inserts like to work, I would try heavier cuts even for a finish cut.
I think carbide is not made to give good finish. Its made to cut fast.
For finishing, you need sharp tool. Carbide is not sharp at all.
Carbide is sharp enough but ccmt is terrible geometry for such smal lathe
Definitely i would using tnmg or vcmt