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Spiral carbide dovetail bit?

8/16/16       
Andrew J. Coholic  Member

Website: http://www.joecoholiccustomfurniture.com

In my shop, I have a dovetailer that uses a single flute cutter, which comes stock as a straight edge, brazed carbide bit. It sits in a holder that is eccentric and you use the "cam" adjustment to make the bit cut looser or tighter.

We make predominantly solid wood drawer boxes, with some from Baltic Birch. I know the cut quality can be improved over the stock bit with something after market.

Which leads to my question: Does anyone know if a tooling company makes a single flute, solid carbide spiral that would replace this type of bit? Im heading down to the IWF next week and will bring one stock bit to show/talk to some of the tooling companies. But if someone is already making a replacement as stock, I'd like to know. Prob cheaper than getting a few custom made as well.

The bit is for my Cantek machine, but the same bit is used in some of the Omec machines as well.

8/17/16       #2: Spiral carbide dovetail bit? ...
Brad Member

Will any of the Vortex bits fit your machine? If not, I bet they can make you one.

Vortex bits

8/17/16       #3: Spiral carbide dovetail bit? ...
Ryan Akhurst

Website: http://www.cantekamerica.com

Hi Andrew, the machine you have there uses an eccentric dovetail bit (the spindle is centric). By rotating the bit in the chuck you change the cutting circle and ultimately change how tight or loose the joint is. I have not seen a two flute eccentric bit for that model.

The automatic machine we have (JDT75) comes with 2-flute bits (spiral bit is optional) and will produce a nice finish in plywood. The spindle on this machine is eccentric. This is the only semi-auto machine with a 2-flute cutter as far as I know.

8/17/16       #4: Spiral carbide dovetail bit? ...
Andrew J. Coholic  Member

Website: http://www.joecoholiccustomfurniture.com

If you see in my first post, I am looking to get a single flute cutter. Not a standard two flute.

I use single flute spiral carbide bits in my CNC router, so I cannot see why a dovetail in the same design (single flute spiral in solid carbide) cannot be made. I will be speaking to my regular tooling supplier (Royce/Ayr) at the show but was wondering if this bit is already being made by someone.

That being said - Ryan - I believe the bit is not "eccentric" as the ground shaft is cenetred with the body of the cutter. The chuck that the bit gets fastened to on the machine, does have an eccentric or off centered middle part. Once the bit is secured to the collet, the collet itself can be rotated which brings the cutting edge of the cutter closer in or further away from,, the spinning axis of the spindle.

With a two flute cutter, in this design of chuck, only one flute would be doing any cutting anyhow so two flutes isnt going to improve things.

The stock cutter is not "bad" per say, but I am just looking for something even better, thats all. And speaking to some tooling people, a spiral carbide is what I am after.


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