Models for grinding HSS Lathe Tools

[mikey]

So what would you say a much smaller radius for the tip of the tool to keep that finish?

His nose radius is already pretty small. Tim is using the end edge to shear the cut; see the shaving? That is what you get when using the end edge just behind the nose radius, a shearing cut. This produces a nice finish in almost all materials and can be especially effective with light passes.

 

[Brento]

That is nice to know i will remember that

 

[Fermic]

Hello everyone,

I have been having trouble with 2 pre-cut HSS tools after cutting some alu 6061 : one is dulled and one is broken and poor regrind was tried on it.

The offset cutter, I can try replicate the grind with the intact left hand.
The turning cutter looks not very ground.

My bench grinder is a brand new Dewalt 6-inch.

My pictures

 

[Aukai]

Do you have diamond cards to re hone the edges instead of grinding? Did this work well when you were cutting?

 

[Fermic]

Do you have diamond cards to re hone the edges instead of grinding? Did this work well when you were cutting?

Sadly not, I only have one combination india stone. Which grit I should get for the diamond card ?

They were working fine before I pushed too far at cutting alu.

 

[Aukai]

Can you get these up there?

https://www.amazon.com/DMT-D3EFC-Dia-Sharp-Extra-Fine-Diamond/dp/B00006IIO3/ref=sr_1_2?dchild=1&keywords=diamond+sharpening+card&qid=1614824463&sr=8-2

 

[Brento]

I can say the cards Aukai suggested work good i have a set of them. I also pick up the ezelap sticks and get them today.

 

[Fermic]

Good to hear, I'll start with these cards in this order.

 

[Aukai]

Find a good lapping oil too to keep the cards clean while in use. I use Trend, but it is said to be expensive, and other light oils can be used but I cannot comment on how good that is..

 

[Fermic]

Find a good lapping oil too to keep the cards clean while in use. I use Trend, but it is said to be expensive, and other light oils can be used but I cannot comment on how good that is..

Seems to be expensive, indeed. I'll start looking around for this such oil.