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| Checking FB projection over soundboard at saddle position. http://w-ww.luthiersforum.com/forum/viewtopic.php?f=10101&t=52984 |
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| Author: | Colin North [ Sun Mar 01, 2020 2:16 pm ] |
| Post subject: | Checking FB projection over soundboard at saddle position. |
Lotsa questions over the years on neck angle, etc., just though I'd post something on it. This build's a Hybrid and was built with a 28" domed top, flat UTB and started with a flat top rim, so I couldn't do my normal method (straight edge on the upper bout and a drill bit), but worked out something similar. After some sanding on a flat board with the tail propped up, wanted to verify my calculations, so before gluing the top on checked the FB projection using a 7mm spacer (FB + fret height) over the neck block, held that and the soundboard in place with go-bars and placed a straight-edge on the spacer. Then measured the height of the straight edge over the saddle position. Picture below. |
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| Author: | Joe Beaver [ Sun Mar 01, 2020 4:43 pm ] |
| Post subject: | Re: Checking FB projection over soundboard at saddle positio |
Excellent Colin. It is always best to check the angle early on and often during the build. I know this because I've discovered the hard way what can happen if you don't do it!!! |
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| Author: | Fasterthanlight [ Wed Mar 18, 2020 4:36 am ] |
| Post subject: | Re: Checking FB projection over soundboard at saddle positio |
Very good idea... out of interest, what hight at the saddle are you shooting for? |
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| Author: | Colin North [ Wed Mar 18, 2020 10:52 am ] |
| Post subject: | Re: Checking FB projection over soundboard at saddle positio |
Fasterthanlight wrote: Very good idea... out of interest, what hight at the saddle are you shooting for? This is a nylon string hybrid, so 13mm, as I lose ~1mm to relief and then there's soundboard pull-up. Ending up about 11.5mm. For a SS, then depends what I (or the client) want from the sound, but highest is 14mm, lowest could be ~11.5mm. |
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| Author: | johnparchem [ Wed Mar 18, 2020 10:59 am ] |
| Post subject: | Re: Checking FB projection over soundboard at saddle positio |
I do the same but only use the fret board thickness. I like the idea of using the fret board plus fret. Then again I assume 1 mm of relief under tension and I have 1 mm fret height, so that part washes it washes anyway. |
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