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Knowledge You Can Build On — Est. 1998

Using Kel McNaughton Center Saver

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Using Kel McNaughton Center Saver

#1

Using Kel McNaughton Center Saver

Donna Banfield

>Hi all

I have a 3 hp 2436 with the 44" outboard, riser block set up. I have about a half dozen walnut logs between 26 and 35 inches in diameter, which will be turned on the outboard. I also have the Kel-McNaughton center saver -- standard and large knives.

Here's my question: because of the riser block that allows me to use the tail stock, theoretically I can place my standard banjo on this riser block, which could then be used to hold the gate for the coring knives. I realize that I can only take smaller cores (=/- 16 inches) out of these pieces, but I'd prefer to take some cores out rather than have the bulk of this walnut lie in shavings on the floor. Are there any contraindications to me using the center saver in this manner? For example, would the torque on these large blanks, even moving at a slower speed, be too much for the steel, causing them to bend/break? Am I asking for a serious injury?

Can I/should I try this? Has anyone else tried something like this?

Thanks for any advice or recommendations.

Donna Banfield

Re: Using Kel McNaughton Center Saver

#2

Re: Using Kel McNaughton Center Saver *LINK*

Les Robison

>I would suggest you try a message to Mike Mahoney. I know he has a DB 36 and also uses the McNaught on all his lathes. He is MR. McNaughton.


http://www.bowlmakerinc.com/

Re: Using Kel McNaughton Center Saver

#3

Re: Using Kel McNaughton Center Saver

Bill Grumbine (Kutztown PA)

>Hi Donna

A 16" core is a 16" core regardless of what size chunk it is coming out of. I do not think it is going to be a problem for you to core your large pieces on the outboard side of the lathe. I regularly core at about 750-800 rpm. As long as the tool is set up properly, i.e. so that the gate is taking up the stress instead of you taking up the stress, it cores very smoothly. You just want to avoid jamming it in right from the get go. Once you make a nice entry into the wood, it is over in a matter of a minute or two, and you have a nice core on the floor.

Bill

Re: Using Kel McNaughton Center Saver

#4

Re: Using Kel McNaughton Center Saver

Greg Jensen

>Donna,

You should not have a problem coring out on the outboard. If your core outs are not too deep you can get up to 20" with the standard blades. Take it slow and make sure to back off your forward pressure applied to the blade when you get half way through and start to turn toward center. When cutting toward center you almost have to hold the blade back when cutting the end grain.

Greg Jensen

North American Rep for Kelton Tools.

Re: Using Kel McNaughton Center Saver

#5

Re: Using Kel McNaughton Center Saver

Barry Irby

>I have been trying to become proficient with the Coring system. The only reason I can see that might give you trouble is what Bill mentioned, the speed. I have bee finding that the system works much better if the speed is up around 750 or 800 RPM, just as Bill said. I would be unable to spin a blank that big that fast on my lathe, but maybe yours will handle the chore well.

Re: Using Kel McNaughton Center Saver

#6

Re: Using Kel McNaughton Center Saver

Ron in Drums PA

>I don't know Donna. I core on a 3/4hp Jet 1236 with sheet metal legs. The biggest core to date is almost 10". If my measly Jet can handle it, I'm sure your beefy 3hp 2436 can do a much better job of it.

Re: Using Kel McNaughton Center Saver

#7

Re: Using Kel McNaughton Center Saver

Pat Mulligan

>Make sure you leave plenty of clearance for the knife going in.Especially with those long knives.I had a bad catch on a large cherry blank and bent the spindle on my lathe. Good luck Pat

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