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Brunton Angle Finder jig for the McNaughton Center Saver

Discussion in 'Tutorials and Tips' started by Nick Carruthers, Mar 7, 2019.

  1. Nick Carruthers

    Nick Carruthers

    Joined:
    Jun 7, 2018
    Messages:
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    Location (City & State):
    Providence, RI
    Hello all!

    A few months ago, I got the McNaughton Center Saver coring jig used off of eBay. It was advertised as "used only a few times," presumably because it is difficult to set up. While searching YouTube, I came across Gavin Brunton's channel. He designed a spreadsheet to calculate and a jig to set the entry angle based on the diameter and depth of the bowl blank. I took his instructions, built the jig in CAD, and then printed it on my 3D printer.


    View: https://www.youtube.com/watch?v=QViwRjm0dYc


    The 3D model files can be downloaded from https://www.thingiverse.com/thing:3366592

    Prints can be ordered from https://www.thingiverse.com/thing:3366592/apps/print/#apps . Note the this is a third-party service and I don't make any money off of it, and can't support any technical issues with it.

    Gavin's Channel with the original videos: https://www.youtube.com/channel/UClXgFhhTjQxrOJQIT3Go61g

    He has information in the comments of this video on how to get the spreadsheet he designed to calculate the angles.


    View: https://youtu.be/h-KYdwELDNI

    I hope you enjoy!
     
  2. Bill Boehme

    Bill Boehme Administrator Staff Member

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    Thanks for the information, Nick. I decided to move this thread to the Tips & Tutorials Forum.
     
  3. Nick Carruthers

    Nick Carruthers

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    OK, no problem!
     
  4. robo hippy

    robo hippy

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    Well, this is a new one to me..... Have to ponder this for a bit, especially since I have always done it by eyeball..... Some possibilities here.

    robo hippy
     
    Emiliano Achaval likes this.
  5. Bill Boehme

    Bill Boehme Administrator Staff Member

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    I see that you can buy the tool made with a 3D printer and they give three links, but I haven't found any information on the cost. I could make one the old fashioned way with a coping saw and a drill press, but that's too much like work and the end result would be pretty crude.
     
  6. Nick Carruthers

    Nick Carruthers

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    I think you have to go through the process of selecting material and printing provider before it will give you a quote. I will see if I can figure out an easier way.
     
  7. Emiliano Achaval

    Emiliano Achaval Administrator Staff Member

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    Same here, have to admit I did a lot of funnels when I started, maybe this can cut the learning curve.
     
  8. Bill Boehme

    Bill Boehme Administrator Staff Member

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    Plus, it's always good to get a new toy.
     

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