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Models for grinding HSS Lathe Tools
- Thread starter mikey
- Start date
- Joined
- Feb 17, 2021
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- 489
try making an oversize tool out of wood to check its shape and profile......
- Joined
- Oct 4, 2016
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- 7,163
I hope it will, I went back to your HSS thread, and some research on the bit it's self, I took a WAG on how to shape it, and wow, that's some hard stuff. I'm not sure my 80 grit CBN wheel is still 80 grit, and I need to change my ceramic belt too. 
Last edited:
- Joined
- Nov 25, 2015
- Messages
- 9,722
I have the same stuff. If I remember correctly, you don't cool the tool, if you do it can breakdown from the shock.
Look it up to be sure.
Look it up to be sure.
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- Jun 7, 2013
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- 10,449
What do you intend to use it for, material wise? I may not be the best choice of tool bit.
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- Nov 25, 2015
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From Wesson's website: see attached pdf from their catalog about grinding this is a snippet.
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- Oct 4, 2016
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Thanks WC I did see that, good information.
I am changing a bell housing that was intended for a twin sintered iron disc, and floater, back to a std depth can, and will have to shorten the input shaft. The company said I should try to cut it myself, they do it all the time
I'm worried about the splines being an interrupted cut though. I do have 431, and 432 CNMG bits to try also.
I am changing a bell housing that was intended for a twin sintered iron disc, and floater, back to a std depth can, and will have to shorten the input shaft. The company said I should try to cut it myself, they do it all the time
I'm worried about the splines being an interrupted cut though. I do have 431, and 432 CNMG bits to try also.
- Joined
- Oct 4, 2016
- Messages
- 7,163
I went as deep as .080 DOC in 1.250 4130 bar stock @ 300 rpm, the feed rate might be off, I did not have time to play with it. I did notice that ~1/4 to 3/8" off of the bar it stayed a straw color, and then turned a dark blue, this was with no mist coolant.
- Joined
- Nov 25, 2015
- Messages
- 9,722
for those of you that can't grind HSS worth a damn.
I recommend these 4 videos from Mr. Pete. They will help you grind if you insist you can't
I recommend these 4 videos from Mr. Pete. They will help you grind if you insist you can't
I actually watched his video last night. It’s a very good instructional video.
The grinding jig/holder is slick. It would surely be easier than free hand. That said, if you take your time and refer back to the pictures in the South Bend instruction book ( how to use a lathe) , it’s really not hard to grind your tooling fee hand. Like Mr Pete says multiple times…. There’s a lot of leeway in the angles. You don’t need any special tools to grind a useable hss cutting tool.
The grinding jig/holder is slick. It would surely be easier than free hand. That said, if you take your time and refer back to the pictures in the South Bend instruction book ( how to use a lathe) , it’s really not hard to grind your tooling fee hand. Like Mr Pete says multiple times…. There’s a lot of leeway in the angles. You don’t need any special tools to grind a useable hss cutting tool.