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more fun with my small cnc
http://www.luthiersforum.com/forum/viewtopic.php?f=10101&t=43718		 Page 1 of 1
Author:  weslewis [ Wed Jun 25, 2014 6:13 pm ]
Post subject:  more fun with my small cnc
cutting out the fretboard and fret markers, nut set in .118 from 0 fret position for nut compensation...board next to it is 1/4 inch mdf I used for a practise cut first..
Author:  weslewis [ Wed Jun 25, 2014 6:17 pm ]
Post subject:  Re: more fun with my small cnc
oh I slotted and radiused the fretboard before machining, fret slots cut with a stewmac blade and Lmi template, radiused on a jig Todd Stock had posted using a router..
Author:  Kelby [ Thu Jun 26, 2014 12:33 am ]
Post subject:  Re: more fun with my small cnc
Why did you not use the CNC to radius the board and cut the slots?
Author:  weslewis [ Thu Jun 26, 2014 6:13 am ]
Post subject:  Re: more fun with my small cnc
right now I am not set up for 3d machining which is required for radiusing , and didn't have a .023 bit to cut the slots , cutting the slots on a table saw is fast and easy.
Author:  arie [ Thu Jun 26, 2014 10:14 am ]
Post subject:  Re: more fun with my small cnc
weslewis wrote:
right now I am not set up for 3d machining which is required for radiusing , and didn't have a .023 bit to cut the slots , cutting the slots on a table saw is fast and easy.



looks nice!. btw you don't need 3d to machine a constant radius fretboard. it is not a requirement. a true compound? -yes, but not a straight radius if that is what you are making.

what software are you using?
Author:  whiskywill [ Thu Jun 26, 2014 10:52 am ]
Post subject:  Re: more fun with my small cnc
The position markers are not equi-spaced from the fret slots. Is that deliberate?
Author:  weslewis [ Thu Jun 26, 2014 12:16 pm ]
Post subject:  Re: more fun with my small cnc
Using v carve pro, camera angle makes the markers look off
Author:  Don Williams [ Thu Jun 26, 2014 12:22 pm ]
Post subject:  Re: more fun with my small cnc
How did you index the slots to get the taper and nut in the correct relationship with the slots?
Looks like you over-cut the nut location... too close to the 1st fret.

It's not your camera angle, it's the location of the cut. Everything got shifted downward...

:(
Author:  weslewis [ Thu Jun 26, 2014 12:27 pm ]
Post subject:  Re: more fun with my small cnc
Measured distance between nut, less .118 for comp and first fret dead on
Author:  weslewis [ Thu Jun 26, 2014 12:34 pm ]
Post subject:  Re: more fun with my small cnc
You can see 0 fret position slot in 3rd pic
Author:  James Ringelspaugh [ Thu Jun 26, 2014 1:15 pm ]
Post subject:  Re: more fun with my small cnc
Sorry to be a downer, but .118" is waaaay too much nut compensation... maybe you were thinking of saddle compensation? .02-.03" is usually plenty at the nut.
Author:  weslewis [ Thu Jun 26, 2014 1:43 pm ]
Post subject:  Re: more fun with my small cnc
Each string is individually compensated by machining nut, see Trevor Gore books, .118 is needed basically for low e, comp is from 0 fret position, the saddle is also compensated as well
Author:  Pmaj7 [ Thu Jun 26, 2014 1:44 pm ]
Post subject:  Re: more fun with my small cnc
I think most people use about .012 by default. That's what you get when you use the (LMI) fret template. What type of CNC is that?
Author:  weslewis [ Thu Jun 26, 2014 1:50 pm ]
Post subject:  Re: more fun with my small cnc
Machined nut
Author:  James Ringelspaugh [ Thu Jun 26, 2014 2:16 pm ]
Post subject:  Re: more fun with my small cnc
Ah, I see... I guess it doesn't hurt to have extra bone to work with if you don't mind a little extra file work
Author:  weslewis [ Thu Jun 26, 2014 4:42 pm ]
Post subject:  Re: more fun with my small cnc
Nut also machined on cnc
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