thank you
Padma
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| Bolt-on neck for archtops https://luthiersforum.com/forum/viewtopic.php?f=10117&t=16049 |
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| Author: | Dave Stewart [ Fri Feb 22, 2008 3:46 pm ] |
| Post subject: | Bolt-on neck for archtops |
I tried a bolt-on mortice & tenon neck on my last archtop (after getting some good pointers from Mark Blanchard) and was very happy with the results. A tutorial was suggested, so here it is based on my current project. I used 1/4-20 KD bolts & barrel nuts, as I felt they would be more forgiving to the angles involved than fixed inserts. After a spirited debate (not here) about whether or not to glue the extension, I decided not to. The extension contacts the top only as far back as the mortice (no glue), and from there back is totally cantilevered. Two things you'll need are a 24" long (short flute) bit, and a long shopmade allen wrench. (.300" mild steel bar, cross-drilled for a handle at one end & end drilled for a stub of the correct allen wrench at the other- epoxied in) The first step is to properly fit the partially shaped neck, re centerline / height at bridge / etc., so it's perfect before proceeding. |
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| Author: | Dave Stewart [ Fri Feb 22, 2008 3:52 pm ] |
| Post subject: | Re: Bolt-on neck for archtops |
......and tighten her up! Hope this helps. |
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| Author: | SteveCourtright [ Fri Feb 22, 2008 3:57 pm ] |
| Post subject: | Re: Bolt-on neck for archtops |
Awesome Dave to get this tutorial. I am doing an archtop next, after my current OM is well along, so this is timely. So, no glue anywhere in the joint? |
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| Author: | Blanchard [ Fri Feb 22, 2008 9:41 pm ] |
| Post subject: | Re: Bolt-on neck for archtops |
I also bolt on my archtop necks. I use threaded inserts and it is really a pain to get everything lined up properly. Dave's method looks easier and possibly stronger to me. I don't use any glue... not needed. Mark |
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| Author: | Dave Stewart [ Sat Feb 23, 2008 11:22 am ] |
| Post subject: | Re: Bolt-on neck for archtops |
Thanks Mark, and thanks for your help. I should mention that I graphite reinforce right into most of the extension, which I think becomes more important, given it's not glued. |
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| Author: | Blanchard [ Sat Feb 23, 2008 3:02 pm ] |
| Post subject: | Re: Bolt-on neck for archtops |
I run carbon bars up into the extension as well. I think that helps keep the neck extension straight whether the joint is glued or not. Mark |
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| Author: | Dave Taylor [ Sat Feb 23, 2008 4:37 pm ] |
| Post subject: | Re: Bolt-on neck for archtops |
Dave, Thanks for the tutorial. It's always nice to have a few pictures to make it clear. |
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| Author: | Anthony Z [ Sat Feb 23, 2008 10:55 pm ] |
| Post subject: | Re: Bolt-on neck for archtops |
Dave, thanks for posting this tutorial. Very well done and very much appreciated. |
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| Author: | npalen [ Sun Feb 24, 2008 7:53 am ] |
| Post subject: | Re: Bolt-on neck for archtops |
What Anthony said. Nelson |
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| Author: | RBiggs [ Sun Feb 24, 2008 8:32 am ] |
| Post subject: | Re: Bolt-on neck for archtops |
Thanks so much for taking the time to create and share the pics and your method. I'm close to beginning the neck work now on a couple archtops and have wanted to try the bolt-on method. Great timing for me!! Robert |
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| Author: | SteveCourtright [ Sun Feb 24, 2008 7:55 pm ] |
| Post subject: | Re: Bolt-on neck for archtops |
Robert, welcome to the OLF. As a hint - we really love pictures... |
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| Author: | rajones19 [ Mon Feb 25, 2008 7:40 pm ] |
| Post subject: | Re: Bolt-on neck for archtops |
Dave - Many thanks for taking the time to document and post this. I'm planning to move on to archtops soon, once these mandolins are completely done. You couldn't have timed this much better! |
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| Author: | Colby Horton [ Fri Feb 29, 2008 10:25 am ] |
| Post subject: | Re: Bolt-on neck for archtops |
Does anybody know where to get these barrel nuts with a centered hole? All the ones I've seen the hole is slightly off center. You can still use 'em but it would be a lot better with a centered hole. |
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| Author: | Erik Hauri [ Sat Mar 01, 2008 8:15 am ] |
| Post subject: | Re: Bolt-on neck for archtops |
I just sand down the long end of my (Woodcraft) barrel nuts until they're symmetric about the hole; also because the 3/4" barrel nuts always seem to come out at ~0.78" or more when I mic them, so one end is always sticking out the end of a 0.75" tenon. |
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| Author: | Dave Stewart [ Sat Mar 01, 2008 10:31 am ] |
| Post subject: | Re: Bolt-on neck for archtops |
If you shop around a bit, you'll find shorter ones. Mine (shown in the first pic) are under 1/2". (I can therefore make the barrel holes blind, which locates them laterally.) |
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| Author: | the Padma [ Wed Sep 28, 2011 10:06 pm ] |
| Post subject: | Re: Bolt-on neck for archtops |
thank you Padma
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| Author: | Chris Pile [ Wed Sep 28, 2011 11:04 pm ] |
| Post subject: | Re: Bolt-on neck for archtops |
Pretty darn cool. |
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| Author: | Bjornstad [ Wed Aug 07, 2013 5:40 am ] |
| Post subject: | Re: Bolt-on neck for archtops |
Thanks |
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