francis
C.O.G.
Posts: 2,405
My main instrument is: Whatever I'm building...
|
Post by francis on Jan 31, 2024 19:41:49 GMT
Secondary bracing in position and partially shaped. The bracing forms a ribbed 'dome' like structure (see end view photo) highest over the bridge plate and can be seen to taper away to the tips of each brace.
|
|
francis
C.O.G.
Posts: 2,405
My main instrument is: Whatever I'm building...
|
Post by francis on Jan 30, 2024 20:08:48 GMT
The soundboard bracing. The primary curved braces have been fitted a few days ago. They spent 24 hrs under go bar pressure waiting for the resin to fully cure. They were then partially shaped taking them from full depth across the bridge plate tapering to feathered ends with a smooth curve. The photo shows the secondary braces have been added these too will stay under pressure for 24 hrs before being shaped although their shapes will more radial taller towards the centre of the body and tapering outwards. The upper bout harmonic bar has yet to be added. Unlike all the other braces which are curved to a 20 foot radii matching the soundboard dome, this is flat. But it will be arched to bridge the ends of the longer curved primary braces which pass underneath it. (The block at the top end with the double go bar rods on it is not part of the bracing it was the to initially hold the soundboard in place before other parts were added and pressure applied elsewhere)
|
|
francis
C.O.G.
Posts: 2,405
My main instrument is: Whatever I'm building...
|
Post by francis on Jan 21, 2024 12:00:04 GMT
All very neat and clean - lovely stuff.
|
|
francis
C.O.G.
Posts: 2,405
My main instrument is: Whatever I'm building...
|
Post by francis on Jan 17, 2024 14:10:39 GMT
Working on the soundboard at present. The rosette panels (flame jarrah) have been inlayed along with some black/white/black thin lines and the whole face given a light sanding to level things off. The internal woodwork has been started with the brace laminations being pre bent with a hot pipe/iron (these are currently drying out). Once they've dried out fully they will be bonded together to form a spruce/mahogany/spruce sandwich against their respective formers.
Brace laminations Rosette
|
|
francis
C.O.G.
Posts: 2,405
My main instrument is: Whatever I'm building...
|
Post by francis on Jan 13, 2024 14:05:40 GMT
Mmmm. Bugg** broke a tool bit cutting MoP. 0.4mm cutting well then the sound changed.... Ordered 2 more just in case! Change tack and cut the quarter inch and 4mm slots in the neck blank seems I'm a bit heavy handed this morning.
|
|
francis
C.O.G.
Posts: 2,405
My main instrument is: Whatever I'm building...
|
Post by francis on Jan 12, 2024 17:07:56 GMT
I've been working on some smaller (relatively) parts this week: Fretboard, building up the neck and squaring it up ready to cut slots for the truss rod and carbon stiffners. The MoP fret markers need tidying up a little before I can fit them into the rosewood fretboard. Now the weather is settling down a little I can restart work on the soundboard: Rosette first, then the internal bracing layout and bending/laminating the actual braces.
|
|
francis
C.O.G.
Posts: 2,405
My main instrument is: Whatever I'm building...
|
Post by francis on Jan 2, 2024 22:49:23 GMT
I like to trim the bottom of the pin at circa 45 degrees which pushes the ball end towards the bridge plate away from the pin.
|
|
francis
C.O.G.
Posts: 2,405
My main instrument is: Whatever I'm building...
|
Post by francis on Jan 2, 2024 19:45:06 GMT
|
|
francis
C.O.G.
Posts: 2,405
My main instrument is: Whatever I'm building...
|
Post by francis on Jan 1, 2024 16:07:44 GMT
Test fitting back-n-sides together. I need to shave a little more thickness from the ends of the back braces in a couple of places - getting there.
|
|
francis
C.O.G.
Posts: 2,405
My main instrument is: Whatever I'm building...
|
Post by francis on Dec 31, 2023 15:02:18 GMT
Back braces have now had an initial trim, the finger braces have been glued in place and the reinforcement pieces are all glued down. Some of the reinforcements were glued down along with the fingerbraces, the remainder were glued down once the finger brace bonds had cured. This whole assembly will be back under humidty control tonight.
|
|
francis
C.O.G.
Posts: 2,405
My main instrument is: Whatever I'm building...
|
Post by francis on Dec 30, 2023 14:04:35 GMT
It's a Go-Bar day today. Back braces are being applied and I'm playing with the layout of the rosewood reinforcement pieces. Once the main back brace glue has cured I can shape each brace. Then I can add the four short finger braces, and add the rosewood reinforcement pieces too. That's for tomorrow.
|
|
francis
C.O.G.
Posts: 2,405
My main instrument is: Whatever I'm building...
|
Post by francis on Dec 29, 2023 14:11:18 GMT
I've just sent 'Doc' a new mock-up for approval. It takes on some of the features of his J45 and will now have an Indian Rosewood fretboard and bridge instead of the earlier ebony. I hope you like...
|
|
francis
C.O.G.
Posts: 2,405
My main instrument is: Whatever I'm building...
|
Post by francis on Dec 26, 2023 15:08:31 GMT
Working off some Christmas pudding today sanding the edges of the sides to re-establish their profiles after the linings were fitted. Photos show a general view of the back face/edges of the body after sanding on the 15 foot radius dish. Photo two shows the profile of the tail block slimmed down to match the linings. Photo three shows a section of the sanded edge.
|
|
francis
C.O.G.
Posts: 2,405
My main instrument is: Whatever I'm building...
|
Post by francis on Dec 23, 2023 10:54:52 GMT
Final installment before Christmas folks: Sides have had their mahogany reinforcement strips added and the tail block has been shaped and a trial fit made. The neck block is currently covered in clamps and will be uncovered next time I'm in the workshop. Have a good Christmas all.
|
|
francis
C.O.G.
Posts: 2,405
My main instrument is: Whatever I'm building...
|
Post by francis on Dec 21, 2023 11:24:35 GMT
|
|