woodbowlsandthings

March 6, 2016

Oneway Easy Core Laser aid

I have and love my Oneway Easy Core System. Before I purchased it I watched a video on the Oneway website which really got me going in the right direction and help me decide this was the coring system I wanted.
In the video were instructions to make several spacers that enable the user to position the cutter appropriately for whichever set of knives were being used.
I made dutifully made the spacers

IMG_2228and labeled them although they worked as advertized they never really worked as well has I had hoped, primarily because I often use different chucks and sometimes want to position the cutters off center.

Whenever I would use a different chuck or a different location for the cutter I was mostly guessing what the core would look like and exactly how thick the bottom would be.

At first I would position the system where I thought it should be and by holding the cutter over top of my wood, sort of swing it back and forth and look down from the top to try to guess what I would wind up with.

Next I made a pointed stick with a metal rod attached that I could position over the cutter and adjust it for each size of cutter. This actually gave me a better idea of where the cutter would cut, but still not quite what I was looking for.

I soon realized that I wanted a better ‘mouse trap” and realizing that I could easily adapt the laser from my Kobra Hollower to accurately position the cutter without the concern that I might cut too thin a bottom or even go through and hit my chuck.

Here is a photo of the set-up I am now using, it’s fantastic! Quick to set-up and adjust no matter which size cutter I’m using or how I have the blank mounted.

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I simply measured from the center of the pivot to the outside edge of the cutter and scribed these distances on the arm of my Laser. I have the three smallest cutters. Measured from the center of the pivot to the outside edge of the cutter they measure 5″ – 6 1/8″ – and 7 7/16″.

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I am lucky that I use a 1″ threaded bar to adjust a router table when I use it on my oneway and was able to utilize it on the end of my Kobra Laser.

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While taking these photos I thought why don’t I also do a mock-up that could be utilized  by turners who either don’t have the same laser set-up I do or don’t already have a laser.

Here is a similar design that anyone with the Onway Coring System can easily make and use to take all the guess work out of the process.

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If you decide to make this tool, don’t forget to make the upright long enough for the biggest bowl that you can turn on your lathe.

Here are the components. First the bar to hold the laser and enable it to be adjusted for each cutter. I left mine a little long just in case I ever get a larger lathe. I drilled a hole for my laser a little smaller than it’s diameter, cut a slot with a hole at the end to allow the bar to open and gently pinch the laser. I then drilled holes for a screw to allow for the adjustment for each cutter as described above.

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These are all the components. I suggest that if you are following this design you fill the hole in the end of the upright with superglue to strengthen it(don’t insert the screw until the glue has hardened the wood around the hole). This will allow you to use it many times without stripping the screw hole.

IMG_2225In use, both designs work wonderfully. Here are a few photos of them in action.

One other major advantage of this design is that if a blank has bark or a natural edge it is easy to see exactly where the cutter will cut relative to that.

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7 Comments »

  1. Picture is not showing

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    Comment by John Spitters — March 6, 2016 @ 3:33 pm

    • Hi John. Looks as if you may have tried to see this when I was composing it. Or at least that is what I hope happened. It should be live with all the photo’s now, I hope.

      Like

      Comment by peteblair — March 6, 2016 @ 4:01 pm

  2. Hi Peter this is a very full description of your process – I’ll give it a shot John

    Like

    Comment by ajg64 — November 27, 2016 @ 2:18 pm

  3. Thank you so very much for the article. This is exactly what I needed you the reasons you gave!! Ken Gunnell

    Like

    Comment by Ken gunnell — March 15, 2017 @ 4:04 pm

    • Cheers Ken, I am so pleased that this helped you. I know if I had seen in a few years ago it would have made my life a lot easier!!

      Like

      Comment by peteblair — March 15, 2017 @ 4:06 pm


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