So here are the profiles of my first three bits. Does everything look ok? Any recommendations? Are they better than Sas could do?
top
bottom
Let me know before I go screw up yet another piece of Briar!
Shaping HSS Bits for Metal Lathe
Re: Shaping HSS Bits for Metal Lathe
Side and front clearance looks to be good. I would suggest a bit of top rake though for best performance and a honing to get rid of the burred edge. Also you may want to consider grinding a right hand turning tool for turning shanks and for facing rod stock.
Re: Shaping HSS Bits for Metal Lathe
sigh, I know nothing about this area, absolutely nothing. I just bought a Taig and I have no fricking clue what tool to use for what.caskwith wrote:Side and front clearance looks to be good. I would suggest a bit of top rake though for best performance and a honing to get rid of the burred edge. Also you may want to consider grinding a right hand turning tool for turning shanks and for facing rod stock.
I assure all of you, ignorance is not bliss.
Re: Shaping HSS Bits for Metal Lathe
caskwith wrote:Side and front clearance looks to be good. I would suggest a bit of top rake though for best performance and a honing to get rid of the burred edge. Also you may want to consider grinding a right hand turning tool for turning shanks and for facing rod stock.
Which is the right hand turning tool? Roughing, Finishing, or Facing?
Thanks!
Re: Shaping HSS Bits for Metal Lathe
wmolaw wrote:sigh, I know nothing about this area, absolutely nothing. I just bought a Taig and I have no fricking clue what tool to use for what.caskwith wrote:Side and front clearance looks to be good. I would suggest a bit of top rake though for best performance and a honing to get rid of the burred edge. Also you may want to consider grinding a right hand turning tool for turning shanks and for facing rod stock.
I assure all of you, ignorance is not bliss.
Get yourself a copy of how to run a lathe by south bend, it's free online and you will learn a huge amount.
Re: Shaping HSS Bits for Metal Lathe
Roughing, but I would make it something in between the roughing and facing for versatility, of course none of these shapes are definitive and you can adapt them to suit your own needs, I for one rarely use "standard" shapes.Gershom wrote:caskwith wrote:Side and front clearance looks to be good. I would suggest a bit of top rake though for best performance and a honing to get rid of the burred edge. Also you may want to consider grinding a right hand turning tool for turning shanks and for facing rod stock.
Which is the right hand turning tool? Roughing, Finishing, or Facing?
Thanks!
Re: Shaping HSS Bits for Metal Lathe
I use modified versions of these as well. Some are pretty close, but its pipe making so... direct translation to wood....
Andrew
www.andrewstaplespipes.com
www.andrewstaplespipes.com
Re: Shaping HSS Bits for Metal Lathe
A friend of mine who bought me a grinder for Christmas sent me this and it's been immensely helpful.
How to Grind Lathe Tool Cutter Bits
Nothing beats sharp tools.
How to Grind Lathe Tool Cutter Bits
Nothing beats sharp tools.