Martin
Administrator
Posts: 11,994 
Mini-Profile Background: {"image":"http://mandocello.org/lytebox/images/adirondack.jpg","color":""}
Mini-Profile Name Color: 0a530b
Mini-Profile Text Color: 4f3517
|
Post by Martin on Jan 9, 2015 14:13:43 GMT
At our annual members bash at Halifax last year, I had the opportunity to order a wonderful octave mandolin from the very talented davewhite. I had been thinking about it for some time ever since seeing, hearing and then playing ocarolan's CBM (Ceol Binn Mór), which is the finest sounding instrument of its type I've ever experienced. Just after New Year, I got word from Dave that he had begun the process of creating this instrument, and thought it might be interesting to share the progress here. You can also follow it on Dave's website at: www.defaoiteguitars.com/page59.htm |
|
ocarolan
Global Moderator
CURMUDGEONLY OLD GIT (leader - to join, just ask!)
Posts: 35,722
Mini-Profile Background: {"image":"","color":"c0cfe1"}
Mini-Profile Name Color: 182a3f
Mini-Profile Text Color: 733a1c
|
Post by ocarolan on Jan 9, 2015 14:14:39 GMT
Yabadabadoo!
Nice looking grain on the walnut back, Martin.
Keith
|
|
Martin
Administrator
Posts: 11,994
Mini-Profile Background: {"image":"http://mandocello.org/lytebox/images/adirondack.jpg","color":""}
Mini-Profile Name Color: 0a530b
Mini-Profile Text Color: 4f3517
|
Post by Martin on Jan 9, 2015 14:15:48 GMT
 The main components are assembled.  Some cunning plans.  The neck scarfe joint is cut and glued on the English Walnut neck blank using hot hide glue. |
|
Martin
Administrator
Posts: 11,994
Mini-Profile Background: {"image":"http://mandocello.org/lytebox/images/adirondack.jpg","color":""}
Mini-Profile Name Color: 0a530b
Mini-Profile Text Color: 4f3517
|
Post by Martin on Jan 9, 2015 14:17:28 GMT
 The volute on the back of the neck is shaped using the thickness sander.  The stacked heel is glued up using hot hide glue.  The European Spruce top is initially thicknessed, jointed and glued up using hot hide glue and the tent method. |
|
Martin
Administrator
Posts: 11,994
Mini-Profile Background: {"image":"http://mandocello.org/lytebox/images/adirondack.jpg","color":""}
Mini-Profile Name Color: 0a530b
Mini-Profile Text Color: 4f3517
|
Post by Martin on Jan 9, 2015 14:18:59 GMT
 The English Walnut back is initially thicknessed, jointed and glued up using hot hide glue and the tent method.  The truss rod slot is routed out.  The adjustable truss rod is glued in with an English Walnut cap using fish glue. |
|
Martin
Administrator
Posts: 11,994
Mini-Profile Background: {"image":"http://mandocello.org/lytebox/images/adirondack.jpg","color":""}
Mini-Profile Name Color: 0a530b
Mini-Profile Text Color: 4f3517
|
Post by Martin on Jan 9, 2015 14:20:43 GMT
 Then the slots for the two carbon-fibre rods are routed.  The carbon fibre rods with English Walnut caps are glued in with fish glue and clamped while the glue dries. The English Walnut central rosette ring is cut from a back off-cut using the circle cutting jig . . |
|
Martin
Administrator
Posts: 11,994
Mini-Profile Background: {"image":"http://mandocello.org/lytebox/images/adirondack.jpg","color":""}
Mini-Profile Name Color: 0a530b
Mini-Profile Text Color: 4f3517
|
Post by Martin on Jan 9, 2015 14:21:52 GMT
 . . . with this result.  Next the rosette channel is routed out of the top.  The central English Walnut ring flanked by black/pear/black purfling is tested for fit and glued in using white pva glue. |
|
alig
C.O.G. 
Posts: 1,059
|
Post by alig on Jan 9, 2015 15:18:47 GMT
Nice one, Martin!
It'll be with you in no time...
|
|
|
|
Post by Mike Floorstand on Jan 9, 2015 23:54:42 GMT
Great start to the New Year - looking forward to watching this one develop!
|
|
Martin
Administrator
Posts: 11,994
Mini-Profile Background: {"image":"http://mandocello.org/lytebox/images/adirondack.jpg","color":""}
Mini-Profile Name Color: 0a530b
Mini-Profile Text Color: 4f3517
|
Post by Martin on Jan 12, 2015 9:09:35 GMT
 The Ebony headstock veneer is glued onto the top of the headstock using fish glue.  The English Walnut sides are thicknessed A hole for the "porthole" soundport has been made in the bass side. The Ebony centre of the "porthole" is cut and tested for fit.  The neck-block curve on the sides is bent on the hot-pipe. |
|
Martin
Administrator
Posts: 11,994
Mini-Profile Background: {"image":"http://mandocello.org/lytebox/images/adirondack.jpg","color":""}
Mini-Profile Name Color: 0a530b
Mini-Profile Text Color: 4f3517
|
Post by Martin on Jan 12, 2015 9:11:29 GMT
 Next the sides are bent in jig. The sides are sprayed lightly with water, wrapped in brown paper and sandwiched as slat, side, slat, heating blanket, slat and the neck end clamped down to the bending form. The blanket is switched on and when hot enough the lower bout shape is bent.  After fine tuning on the hot pipe and some initial trimming here's the bent bass side in the mould  Here's the treble side bent in the mould. |
|
Martin
Administrator
Posts: 11,994
Mini-Profile Background: {"image":"http://mandocello.org/lytebox/images/adirondack.jpg","color":""}
Mini-Profile Name Color: 0a530b
Mini-Profile Text Color: 4f3517
|
Post by Martin on Jan 12, 2015 9:12:41 GMT
 Next the English Walnut neck block is made. This is a two piece construction The two pieces are roughly shaped and glued together using hot hide glue.  The Ebony veneer is bent to the shape of the volute and glued on the rear of the headstock using fish glue.  The headstock is then cut to shape and the tuner holes are drilled using this jig. |
|
Martin
Administrator
Posts: 11,994
Mini-Profile Background: {"image":"http://mandocello.org/lytebox/images/adirondack.jpg","color":""}
Mini-Profile Name Color: 0a530b
Mini-Profile Text Color: 4f3517
|
Post by Martin on Jan 12, 2015 9:14:01 GMT
 Here’s the result.  The rebated holes for the tuner inserts are then reamed.  After a bit more shaping of the headstock the Rubner tuners are checked for fit. |
|
Martin
Administrator
Posts: 11,994
Mini-Profile Background: {"image":"http://mandocello.org/lytebox/images/adirondack.jpg","color":""}
Mini-Profile Name Color: 0a530b
Mini-Profile Text Color: 4f3517
|
Post by Martin on Jan 15, 2015 13:08:01 GMT
 The neck block shaping is finished, two 6mm holes drilled for the carbon fibre internal braces, the bolt holes drilled and the slot for the fingerboard support cut - the final depth of the slot will be determined when the neck is fitted.  Next the neck-block is glued to the sides with epoxy using the mould as a jig.  The English Walnut tail block is made with two 6mm holes drilled for the internal carbon fibre braces. The 6mm carbon fibre tubes are then glued in using epoxy and the sides glued to the tail block using fish glue. |
|
Martin
Administrator
Posts: 11,994
Mini-Profile Background: {"image":"http://mandocello.org/lytebox/images/adirondack.jpg","color":""}
Mini-Profile Name Color: 0a530b
Mini-Profile Text Color: 4f3517
|
Post by Martin on Jan 19, 2015 13:12:47 GMT
 The end graft channel is cut and the Ebony end graft flanked by black/ pear/ black purfling glued in using hot hide glue. Here's the result.  The ebony porthole ring is glued to the ebony backing plate using hot hide glue.  The centre of the porthole is then routed out. |
|
Jo whoever he is.
