| Official Luthiers Forum! http://www.luthiersforum.com/forum/ |
|
| Cumpiano neck joint questions http://www.luthiersforum.com/forum/viewtopic.php?f=10101&t=21682 |
Page 1 of 1 |
| Author: | jncllc [ Sat Mar 28, 2009 11:59 am ] |
| Post subject: | Cumpiano neck joint questions |
I would like to use a cumpiano neck joint and my questions are how wide and deep is the tenon? Also how big do I make my neck block and should I make it out of maple since the neck & guitar body is maple? Thanks, John |
|
| Author: | John Hale [ Sun Mar 29, 2009 9:59 am ] |
| Post subject: | Re: Cumpiano neck joint questions |
As no-one has jumped in here I will I'm only on number 1, but used this joint. The mortice is still exactly the same as in the book, 3/4" wide 1" deep, wood for the neck block in my opinion us almost irrelevant mahogany is used as it's strong and light really I used oak and I had some, I've repaired guitars with softwood neck blocks too though I wouldn't recommend it. The joint has to be good though mine creaks a little as it wasn't perfect, but it was hand cut I'd rout it now. I take it your familiar with his site? http://www.cumpiano.com/Home/Articles/S ... block.html |
|
| Author: | Barry Daniels [ Mon Mar 30, 2009 7:43 am ] |
| Post subject: | Re: Cumpiano neck joint questions |
You'all know that Cumpiano has abandoned that joint for barrel bolts now, don't you? |
|
| Author: | Mark Groza [ Mon Mar 30, 2009 8:55 am ] |
| Post subject: | Re: Cumpiano neck joint questions |
Barry Daniels wrote: You'all know that Cumpiano has abandoned that joint for barrel bolts now, don't you? Do you mean like this? |
|
| Author: | Barry Daniels [ Mon Mar 30, 2009 8:58 am ] |
| Post subject: | Re: Cumpiano neck joint questions |
I can't really make out the fasteners in that photo, Mark. |
|
| Author: | Mark Groza [ Mon Mar 30, 2009 9:05 am ] |
| Post subject: | Re: Cumpiano neck joint questions |
Barry Daniels wrote: I can't really make out the fasteners in that photo, Mark. Try this pic.I have locateing studs in the tenon in the pic to locate where to drill the neck block for the bolts. |
|
| Author: | Michael Dale Payne [ Mon Mar 30, 2009 10:23 am ] |
| Post subject: | Re: Cumpiano neck joint questions |
I am not sure how you entire assembly is going together but typically scoket head bolts are used rather than studs. But you may just be using the pointed studs to mark your drill holes in your neck block but anyway here is a cross section detail of my version of the Compaino neck joint. Attachment: dowel nut.jpg I also don't know how thick your neck block is but on the length of your tenon an mortise but mine tenon is .6875" and my mortise is .750" deep leaving me 1/16" of clearance between the mortise depth and end of tenon and .50" of wall thickness to support my bolting |
|
| Author: | Terence Kennedy [ Mon Mar 30, 2009 11:49 am ] |
| Post subject: | Re: Cumpiano neck joint questions |
I have the plans for the Cumpiano guitar from the book with the barrel nut neck system. Drawn by a J.G.Moore. The tenon on the plans is 13/16" wide and 1" long. Mine is 3/4" wide and just over 3/4" long. Height top to bottom is determined by the height of the head block. I use 10mm barrel nuts from Ace hardware as the hole is centered on them. They are just a little over 3/4" wide so I file the ends a little. I drill a 3/8" hole and enlarge with a reamer for a snug fit. Terry |
|
| Author: | Mark Groza [ Mon Mar 30, 2009 1:12 pm ] |
| Post subject: | Re: Cumpiano neck joint questions |
I do use the allen bolts.Here is a pic of mine.My tenon is 3/4" wide and 1" deep.The mortice is 1/16" deeper than my tenon for adjustment. |
|
| Page 1 of 1 | All times are UTC - 5 hours |
| Powered by phpBB® Forum Software © phpBB Group http://www.phpbb.com/ |
|