Hello welcome to Enots engineering i'm Alan
In the workshop today I'll be looking at a parting off tool that uses inserts and seeing if you can sharpen the
insert up once it's lost its edge
I'll be testing it out on some Hot drawn and Cold drawn steel to see if there's any difference.
and seeing how I can sharpen it using a diamond wheel so let's go into the workshop and see what happens.
I've just fitted my parting off tool into the lathe, this is just a piece of scrap metal.
I just want to try something I know this parting off tool the tip is blunt
I just want to see, if I can sharpen that parting off tool.
it's an insert
So let's see how it cuts as it is.
There's a lot of rubbing on there it doesn't want to cut it's trying too.
If you look at the end
you can see there's no sharp tip there.
What I want to try and do is see if I can sharpen the front edge see if
I can get a sharp edge on that
and get a better cut so at least I could probably use them two or three times
once they've lost there edge
obviously being tungsten carbide.
the only way I can sharpen that is with a diamond wheel.
so we'll go over to the cutter grinder and set this up.
This is the wheel I'm using it's a diamond wheel
You can see it's Chinese
So I'll fit that to the machine and we'll see how it grinds.
As its aluminium you don't need to put any paper washers on the the back or the front.
This is not a washer on there it's just a label with the manufacturer's details on.
Which are all in Chinese I think that cost me £10 three years ago
This is the diamond impregnated resin on the edge the brown part
I'll set the angle of the table at 8 degrees
There's my parting off tool still in the holder. This tool holder here is at zero.
This edge is at zero, I can rest the tool up against that
Move it up to the wheel and use a handle on the bottom to move it backwards or forwards.
I'll turn the wheel on so the wheel goes in a downwards direction.
I've just touched the tip
You can see there it's taken the black off the edge of the tip.
so now it's shiny, it's just sharpened the edge of the tip up.
I've put the parting off tool back in the lathe, in the same setting.
I haven't altered the height
I've haven't altered the angle and I haven't altered the speed.
Lets see how this cuts
I think that shows that you can sharpen carbide inserts.
I think in the future I will keep the blunt inserts.
once I've got a few I can just sharpen them up.
You can see when I sharpened it just on the tip there get the light on it.
You can see the shiny part is where I've sharpened it just a very end.
you can see on the corner there it's blunt on this side.
Maybe I should have a go at doing the sides
I've just touched the tip
There's the tip when it's sharpened you can see on that edge,
just caught the edge of the tip with the diamond wheel.
On this side its caught the tip on the edge
On the front you can see it's just ground the front
I think that might make a bit of a difference try it.
I've not changed any of the settings.
I've changed the steel to another bar and we'll see how these cuts
No problem cutting that, and that was the tip that I've sharpened.
Originally I was going to throw that away I thought it was blunt.
And on the top it has the chip breakers those marks down the middle.
so I think the answer is you can sharpen carbide tip
if you have a diamond wheel
The one on the right is the tip I've sharpened.
The one on the left is a tip that I've used that's not been sharpened.
Well that's it for today
I hope that was interesting and we'll see you next time.
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