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| Radius dish users: Flatten small bout under fretboard? How? http://www-.luthiersforum.com/forum/viewtopic.php?f=10101&t=43089 |
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| Author: | Ed Haney [ Sat Mar 29, 2014 7:13 pm ] |
| Post subject: | Radius dish users: Flatten small bout under fretboard? How? |
I modified this thread since I got the answer to my first question (Thanks!) but not fully on the second question I had asked. Are you also flattening the top's small bout where the fretboard end is glued?  If not, how are you handling the dome under the fretboard to ger a proper fit of the fretboard?  Thanks, Ed |
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| Author: | bluescreek [ Sat Mar 29, 2014 7:21 pm ] |
| Post subject: | Re: Radius dish users:Where do you locate dome center on gui |
I use the center front to rear right to left.. |
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| Author: | Doug Balzer [ Sat Mar 29, 2014 7:31 pm ] |
| Post subject: | Re: Radius dish users:Where do you locate dome center on gui |
Don't need to locate the centre as the radius is consistent throughout. It shouldn't matter really where you locate the workpiece. |
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| Author: | Johny [ Sat Mar 29, 2014 7:46 pm ] |
| Post subject: | Re: Radius dish users:Where do you locate dome center on gui |
Doug Balzer wrote: Don't need to locate the centre as the radius is consistent throughout. It shouldn't matter really where you locate the workpiece. Yes. Just picture yourself standing in a 20' radius sphere with the inside covered in sandpaper. A radius dish is just a section of this awesome sphere. |
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| Author: | Ed Haney [ Sat Mar 29, 2014 9:34 pm ] |
| Post subject: | Re: Radius dish users:Where do you locate dome center on gui |
I had not thought of it as a section of a sphere. Given that, as you say, it would not matter where it was in the dish. Thanks. Ed |
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| Author: | Jeff Highland [ Sun Mar 30, 2014 2:38 am ] |
| Post subject: | Re: Radius dish users:Where do you locate dome center on gui |
Yes, but you could if you tried, take off nothing at the heel and maximum at the neck block, which would change the angle between the top and the side at this location. |
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| Author: | DannyV [ Sun Mar 30, 2014 3:06 am ] |
| Post subject: | Re: Radius dish users:Where do you locate dome center on gui |
Doug Balzer wrote: Don't need to locate the centre as the radius is consistent throughout. It shouldn't matter really where you locate the workpiece. Likewise. With respect to the where the FB lays on the top, I use a 25' radius on the top. I radius all top braces to 25'. On the UTB I leave a 3" centre section flat. Make marks and sand up to them in the dish. I have been doing this on the last 8 or so guitars and the geometry has been working out consistently perfect (or very close) every time. Prior to this method I was leaving the entire upper bout flat. I constantly ended up with more FB drop off than I liked. No more with this method. Cheers, Danny |
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| Author: | bluescreek [ Sun Mar 30, 2014 5:42 am ] |
| Post subject: | Re: Radius dish users:Where do you locate dome center on gui |
https://www.youtube.com/watch?v=pz6xzVRA51E if you really want to control this process using the Drive the bus technique works well for me. I rely on the center post as it makes this process repeatable and outcome reproducible. Free turning the dishes can have so issues. I will measure as I go and spinning is more efficient than rubbing. |
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| Author: | violinvic [ Sun Mar 30, 2014 7:38 am ] |
| Post subject: | Re: Radius dish users:Where do you locate dome center on gui |
I view the dish as a sphere, also. I try to get the endblocks down to the desired height and the waist heights equal. |
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| Author: | Hesh [ Sun Mar 30, 2014 7:49 am ] |
| Post subject: | Re: Radius dish users:Where do you locate dome center on gui |
Doug Balzer wrote: Don't need to locate the centre as the radius is consistent throughout. It shouldn't matter really where you locate the workpiece. Bingo! Doug nailed it! Anywhere on the dish, if it's made correctly is the same radius and an exact location is not necessary. Depending on your methodology it should not matter. If you radius the rim in the dish, driving the bus as John said, and then remove the rim from the dish and flatten the upper bout on a flat surface rim location in the dish is moot. |
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| Author: | Robbie_McD [ Sun Mar 30, 2014 9:38 pm ] |
| Post subject: | Re: Radius dish users: Flatten small bout under fretboard? H |
Re: Radius dish users: Flatten small bout under fretboard? How? Hesh has a fantastic tutorial on this topic on his site. |
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