Carbide tip holders

Hi,

Can anyone recommend a set of carbide tipped holders plus inserts for a Myford Super 7 and an ideal Quick Change Toolpost to hold said tip holders.

Thanks in advance

Michael

Edited By JasonB on 18/12/2017 10:38:16

Enquire at Arceurotrade? I am positively certain that Ketan, for sure, can fix you up with something appropriate for your needs.

I'm not a fan of cutter sets as you usually get at least one that will never get used and that negates any cost saving that buying a set may have given.

You can do a lot with a Right Hand turning tool, boring bar and parting tool.

Also try to stick with one particular style of insert as it reduces the numbers to have to buy and keep stock of. The CCMT shape is a good all rounder and a narrow GTN-2 a common parting insert that won't put too much strain on your machine. If you do go for a set then google the inserts it uses as some are a bit obscure and you are then tied to getting inserts from that one supplier.

I have a mix of holder makes - Glanze, ARC, JB cutting Tools all work OK. 6mm Square would be about right in the myford.

I have been using Glanze tools from Chronos, 8mm square in a AA size Multifix tool holder for my emco compact 8. So far very pleased with the aluminium inserts for turning, facing and boring, I have not used the other inserts on steel much yet.

I can use 10mm CCMT holders in my ML7 with a good quality Dickson QCTP holder.

Chronos and RDG sell Dickson QCTPs or you could buy a Myford (also RDG) at a premium but the quality is IMHO better. Some of the cheaper import holders have an overly thick lower shelf which restricts the size of tooling but if you keep these for boring bars and other accessories you can save some money.

There are some CCMT 06020X TCT holders and tips bargains from China on slow boats (Make sure your order is under £15 to save on VAT charges) on ebay.

HTH

Jon

Harold Hall's design for a QCTP: **LINK**

RDG have a Dickson clone: **LINK**

Try JB Cutting Tools and Greenwood for holders and tips. As a basic set two to take rhombic tips for RH facing and turning, one to use the small angle and the other the large, would be a good starting point.

AVOID the sets of brazed-on carbide tools - the one you use most will chip and you'll be very frustrated.

Or get a Diamond tool holder - I use that more than carbide now.

I'd go for the Diamond toolholder - see the sidebar to the right. Easy to sharpen, easy to adjust. See the many discussions re carbide vs HSS in this size lathe.

John

I have several toolholders from Bangood that I am pleased with. CCMT inserts will give you 2 cutting edges per tool using the 80* corner. There are holders available that will allow you to use the 100* corner. That would allow the use of all 4 corners on the insert. U have a larger lathe and can use the WNMG insert toolholders. They give me 6 edges per insert.

+1 for diamond toolholder. Not cheap, but then carbide inserts ain't cheap either, and you're not tempted to carry on with a past its best tip, just 2 minutes to resharpen the HSS. I find it especially good on SS as basically HSS is sharper than carbide

Interesting idea noted on a post here was that you may not need a QCTP if using insert-tooling. They proposed supergluing shims to the underside of each tool, as the cutting height is constant with insertable cutters.

So, if you're on a budget, and using insertable carbide tools....

However, I seem to have learned that I am using carbide for roughing and HSS for finish. And CCGT tips are amazing on aluminium when run at high speeds.

Try the CCGT inserts with steel too and you'll find that carbide can be just as sharp as HSS. Many of the CCGT inserts are actually specified for light and finishing cuts in steel. For light machinery, it makes a lot of sense.

If you are looking for cheaper inserts, they are widely available from Far Eastern sites for peanuts if you can bring yourself to order them up a couple of weeks before you need them.

Murray

Yes, I’ve glued shims to the underside of my insert tooling with Epoxy, works well and no need for a QCTP.

QCTP does have the advantage that tools in holders and therefore tools go back in the same place so handweel/DRO readings can be used on multiple parts that need a tool change part way through machining, not just so they go back at correct height.

If you are interested in a project and want a QCTP the late John Stephenson designed one for the Myford some time ago. I made one to his design in 2005 with slight modification for a bigger lathe and have used it ever since. The metalwebnews website it was on has long since gone but the drawings and description can be found on the internet archive here.

Russell

The benefits of a QCTP cannot be understated but I do understand why it wouldn't necessarily fit the style of an old machine, if that's what you're into.

I've bought plenty of carbide tips in the past, coated, uncoated, polished and use them all in a decent sumimoto arc holder.

Michael W