Help ID’ing Round Carbide Insert and Finding a Supplier

[VicParticipant @vic]

Yes, I know it’s a ten year old thread, but just in case this helps anyone else I bought some of these and again the ‘F’ does seem to indicate a nicely sharp edge.

[bernard towersParticipant @bernardtowers37738]

It’s the gt that denotes it

[bernard towers]

On bernard towers Said:

It’s the gt that denotes it

Previous posts would suggest that other **GT inserts were not found to be as sharp by the OP which suggests it is not the GT that makes the difference.

 

As Vic mentions the F seems to indicate the sharpest edge. Quick look at Ceratizit cataloge and they have 3 main specifications for their inserts Fine, Medium and Roughing. **GT are available in M and F which would suggest a different geometry most likely a sharper edge on the F than the M which is a bit “blunter” but more durable while still being sharper than the **MT inserts which tend to be F or M grade.

[Wade BeattyParticipant @wadebeatty78296]

I get my round carbide cup inserts from this site. I made an arbor and use a battery drill and a diamond plate to sharpen.
<p style=”text-align: left;”>https://azcarbide.com/shear-cup-cutters/</p&gt;

[VicParticipant @vic]

There was a link earlier and I took a screenshot of the relevant part. This was confirmed by Ceratizit. Ignore the Red lettering, I added this for my own reference.

[egaParticipant @ega]

Skimming through this old thread I wasn’t sure whether insert tooling for *handheld* tools was intended. I’m an old-school woodturner and, if so, would be grateful for some pointers to modern developments.

In particular, is carbide now used for cutting as opposed to scraping?

[ega]

On ega Said:

Skimming through this old thread I wasn’t sure whether insert tooling for *handheld* tools was intended. I’m an old-school woodturner and, if so, would be grateful for some pointers to modern developments.

In particular, is carbide now used for cutting as opposed to scraping?

Yes, carbide inserts have become very popular with some woodturners. If you use the right technique, most inserts can be used to cut rather than scrape. It’s all about technique.

The round RCGT types discussed earlier in this thread are not normally used for scraping.

As far as I’m aware, most of the inserts offered to woodturners were intended for other purposes but some suppliers imply theirs are specifically made for woodturning?

For things like hollowing, carbide inserts excel.

If you’re interested take a look at Simon Hopes carbide tools, and also Glenn Teagles, and Hunter Tools USA. There are lots of videos on YouTube showing them in action.

The only issue is that some cutters are often sold at exorbitant prices – hence this thread was started many years ago!

[egaParticipant @ega]

Vic:

Thank you for that.

Looking at the Simon Hope website reminded me that I actually bought one of the Termite ring-shaped tools some years ago but have yet to do anything with it!

[ega]

On ega Said:

Vic:

Thank you for that.

Looking at the Simon Hope website reminded me that I actually bought one of the Termite ring-shaped tools some years ago but have yet to do anything with it!

I’ve been meaning to try a ring or hook style tool but I get the impression they aren’t for seasoned wood?

[Vic]

On Vic Said: 

I’ve been meaning to try a ring or hook style tool but I get the impression they aren’t for seasoned wood?

I may be in a better position to answer this when I have got some experience with the Termite. Off the cuff, I would have thought that the chips from green timber would be more likely to choke the throat of the ring tool. I expect that the orientation of the grain is also a factor.

I’ve never used a hook tool but understand they were favoured by the early turners who were working unseasoned timber at slow speeds which may be what you had  in mind.

[renardiere7Participant @renardiere7]

I can offer a bit of an insight into hook tools but have to say I’m far from an expert. Many years ago I met an old fellow at the South of England Agricultural Show, he was turning out beautiful turned salad bowls from Elm at a prodigious rate and he was using hook tools.  I was aware of hook tools but had never seen them used, after a longish conversation I managed to wangle an invite to his workshop and was further instructed on the making and use of hook tools.

As a result of all this I enrolled on a blacksmithing course at Plumpton Agricultural college and ended up producing a series of hook tools.  I’m sad to say that my woodturning took a step backwards at this point as other things became priorities.

As a generality, hook tools really are for green wood. You can use them in seasoned timber but the hook radius needs to be much smaller and as sharp as you can get it. I forged my tools from 1/2″ silver steel with standard hardening and tempering.

[renardiere7]

On renardiere7 Said:

…

ended up producing a series of hook tools.

…

Successfully making and using one’s own tools is intensely satisfying!

[Author]

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