HSS vs Carbide milling feeds & speeds

[JasonBModerator @jasonb]

This video was posted on another forum tonight, makes interesting viewing to see how much more the carbide cutters can remove at "normal" speeds.

PS you can skip the calculations at the start if you just want to watch the chips

[JasonBModerator @jasonb]

[Thor 🇳🇴Participant @thor]

Thanks for posting the video Jason. Impressive amount of chips produced by the carbide cutters, I am not sure though that my milling machine is rigid enough for such depth of cuts. I have used carbide cutters when dealing with material with a hard surface or hard spots, but with small depth of cuts. Carbide cutters also seems to be more brittle than HSS.

Thor

[GarryCParticipant @garryc]

Thanks Jason, very interesting. The formula's at the start went over my head – is there an up to date 'handbook' with such formula in I've come across one from Tubal Cain but not a recent edition..? Had to look up the references to FC3 and HPC as I had no idea what there were either, so a little bit wiser now.. My Mill doesn't have auto feeds but hope to have one in the future.. I'm guessing there must a be a book somewhere with all this info in – I'll have to do some digging..

Cheers

Garry

[John HaineParticipant @johnhaine32865]

FS Wizard for both Apple and Android devices does this well. Free lite versions for both.

[GarryCParticipant @garryc]

Thanks John, had trouble finding the free iPhone / iPad download – here it is **LINK**

and the Tutorial – http://zero-divide.net/?page=FrontPage&shell_id=151&action=search_results&search_category_id=1110&search_where=3&search_string=FS%20Wizard

Edited By Garry_C on 23/07/2015 08:58:29

Edited By Garry_C on 23/07/2015 09:11:58

Edited By Garry_C on 23/07/2015 09:12:42

[Raymond AndersonParticipant @raymondanderson34407]

I think that using a "throw away "hss cutter against a carbide end mill is not really a fair comparision.

even if it is as the lad said, a cheaper brand of carbide cutter. A fairer test would have been an hss Co end mill from

Emuge Franken , Guhring Titex or Clarkson "premium" Interesting vid though but, I feel, not cut and dried.

[Ian S CParticipant @iansc]

Perhaps a comparison test between different qualities of HSS could be useful(there probably is one).

Ian S C

[KWILParticipant @kwil]

Yes the carbide cutters are more brittle than HSS if you insist on knocking them about. Always keep cutters separated, one from another.

You do not need autofeed to use carbide, but steady "engagement" is necessary.

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