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Oct 27, 2020 - 3:38:42 PM
1516 posts since 4/13/2017
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I was considering purchasing a CNC machine for making bridges, cutting headstock overlays, doing detailed inlay work, and other stuff. Would one of these fantastic machines be capable of making a block rim perfectly round?

Oct 27, 2020 - 4:09:28 PM

QldPicker

Australia

104 posts since 4/17/2020
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As somebody who worked with laser cutters/etchers in a previous life, (Epilogue and Trotec up to 120W), the answer is yes, dependant on materials.
CNC machines (non laser), appropriate to the task will do just about anything you require subject to operator skill and setup.
youtube.com/watch?v=xdeWQQZEtH0
youtube.com/watch?v=smIi4zrfatw

The basic underlying principle behind all CNC machines (lasers included) is the same.
If I was in your shoes, I must admit some form of CNC would be top of my priority list.
My love of Laser technology gave me the nickname of Dr Evil.

Oct 27, 2020 - 4:36:10 PM
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274 posts since 8/7/2007

Hunter,

Both machines are really great to have in any shop. Just remember that a CNC machine is not a miracle worker and is not a fix-all for poor design. Garbage in equals garbage out. I have experienced several companies that “got into the banjo business” with CNC machines but their products were still sub par.

The main thing you need to really study up on is fixturing and tooling. A CNC machine that will hold a tolerance of .002 inches will not be of much help if the fixtures are inconsistent. Consistent accurate repeatability is The name of the game. Good luck and please report back with what type of machine you decide on.

Eric

Oct 27, 2020 - 4:47:43 PM
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1516 posts since 4/13/2017
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@esullivan

I'm not sure what I'll decide on. I think I had probably better spend the money on a good 16" metal lathe and guarantee good rims than a CNC machine and ruin a few rims trying to find a way to get true consistency. Thanks for the input!

Oct 27, 2020 - 6:17:55 PM

1516 posts since 4/13/2017
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esullivan
Not sure why that didn't work in the last post, but oh well haha.

Oct 27, 2020 - 7:22:16 PM

11209 posts since 6/2/2008

If you want to see what a luthier and banjo specialist can do with CNC, follow Richie Dotson on Facebook.

Oct 28, 2020 - 3:01:46 AM

215 posts since 9/6/2019

quote:
Originally posted by QldPicker

As somebody who worked with laser cutters/etchers in a previous life, (Epilogue and Trotec up to 120W), the answer is yes, dependant on materials.
CNC machines (non laser), appropriate to the task will do just about anything you require subject to operator skill and setup.
youtube.com/watch?v=xdeWQQZEtH0
youtube.com/watch?v=smIi4zrfatw

The basic underlying principle behind all CNC machines (lasers included) is the same.
If I was in your shoes, I must admit some form of CNC would be top of my priority list.
My love of Laser technology gave me the nickname of Dr Evil.


But did you air quote every time you said it?

Oct 28, 2020 - 4:38:44 AM

527 posts since 2/15/2015

I wonder if anyone has ever tried to print a bridge? Sure it wouldn't be wood but there are other materials out there that might do just as well as wood, but are not as easy to work with as wood, which would necessitate accuracy in the print out.

Wouldn't it?

(I'm not sure but I think i just wrote a song...)

Edited by - geoB on 10/28/2020 04:40:02

Oct 28, 2020 - 2:53:26 PM

QldPicker

Australia

104 posts since 4/17/2020
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