Shim it or regret not shimming it
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| Oops. What do you suggest? https://www.luthiersforum.com/forum/viewtopic.php?f=10101&t=46822 |
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| Author: | PhilQ [ Thu Dec 10, 2015 10:04 am ] |
| Post subject: | Oops. What do you suggest? |
Hi folks. Working on a build right now. The neck angle is pretty spot on, but I sanded a little too aggressively on the cedar top to flatten the part where the tongue on the neck will be glued. I can still flex it down to glue it, but is it better to do that, or should I glue a shim? The gap at the bottom of the tongue is fairly significant... Thanks! |
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| Author: | jfmckenna [ Thu Dec 10, 2015 11:17 am ] |
| Post subject: | Re: Oops. What do you suggest? |
Shim it or regret not shimming it
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| Author: | Colin North [ Thu Dec 10, 2015 11:19 am ] |
| Post subject: | Re: Oops. What do you suggest? |
Shim. If by "fairly significant" you mean more quite a lot... If it's more than say, 1/20" Easy enough to make. Thickness a longish piece of fingerboard wood to the gap size, or rather slightly less to give some fall-off (about 15 thou), put it on a support piece of timber or thick ply. Clamp/glue another piece (any hard wood) of the same thickness on top of it, with the end twice the length of your fretboard extension from the end of the shim. Use a longish plane with the part of the sole behind the blade (very sharp blade and finely set) resting on the top piece and the tip of the plane overhanging the end and taper the shim until you just reach the supporting timber at the end. Cut off tapered section when finished. Got your shim. (Got this from the departed Todd Stock - tip for tapering a small wedge) |
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| Author: | kencierp [ Thu Dec 10, 2015 11:23 am ] |
| Post subject: | Re: Oops. What do you suggest? |
At a couple of fairs I've seen the work of a well established maker here in Mid Michigan (reasonably priced but not cheap) and every sample he had at his booth had an extension shim. He felt it gave room for tweaking? |
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| Author: | PhilQ [ Thu Dec 10, 2015 12:05 pm ] |
| Post subject: | Re: Oops. What do you suggest? |
Thanks! I wonder if truss rod access through the soundhole will become a problem... |
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| Author: | meddlingfool [ Thu Dec 10, 2015 12:31 pm ] |
| Post subject: | Re: Oops. What do you suggest? |
Define significant... |
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| Author: | kencierp [ Thu Dec 10, 2015 12:41 pm ] |
| Post subject: | Re: Oops. What do you suggest? |
Quote: I wonder if truss rod access through the soundhole will become a problem... Perhaps I am missing something -- if you cut a slot in the shim the truss rod wrench won't even know its there. |
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| Author: | PhilQ [ Thu Dec 10, 2015 1:01 pm ] |
| Post subject: | Re: Oops. What do you suggest? |
meddlingfool wrote: Define significant... Close to 1/16th at the end. |
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| Author: | meddlingfool [ Thu Dec 10, 2015 2:59 pm ] |
| Post subject: | Re: Oops. What do you suggest? |
Personally I would just glue it down, unless it's a cutaway. |
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| Author: | cphanna [ Fri Dec 11, 2015 6:40 pm ] |
| Post subject: | Re: Oops. What do you suggest? |
Shim. |
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| Author: | Joe Beaver [ Fri Dec 11, 2015 10:30 pm ] |
| Post subject: | Re: Oops. What do you suggest? |
Having the fingerboard extension drop off a little from the body joint is not necessarily a bad thing. It Wil make it easier to to do a neck reset down the road. But, it should be in the 1/16 - 3/32 range. More might be unsightly. |
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