Custom Search
Showing posts with label Guitar #9. Show all posts
Showing posts with label Guitar #9. Show all posts

2018-09-20

Finishing the guitar


20180710
After 2 years of playing the guitar, I finally get around to start finishing the guitar.
The string broke so I removed the string and started the finishing process properly.

The sound has developed to be very good.
In terms of sonoriy I would rate it the best amongst my guitar. (2nd is followed by Guitar #5)
Other guitars were generally great at the trebles but OK at the bass sonority.
This guitar has both clarity, separation and great bass sonority.
I attribute this to the bracing and the low air resonance.

First I sanded the top even with various grits: 150, 240, 320, 400, 800, 1500.
Then I pore filled the rosette ring with CA glue.
I tape up those areas which I don't want to coat with shellac.
Finally I coated the surface with thin coats of shellac without any oils.
I noticed some patches of unevenness on the rosette area which means I did not sand it even after the pore filling.
Likely I will need to remove the base coat of shellac in particularly the rosette area.
But the grain really pops out after the shellac is applied


After sanding the top with various grits


Pore filled the rosette with CA glue


Applied a the base coat of shellac.


20180713
More FP in progress the shellac building up slowly.


Slowly building up the shellac. Look at the silking on the top (medullary rays)


Another view


Look at the rosette, the grain starting to pop out


More FP in progress, beginning to get some shine


Starting to get the shine


20180724
Some more polishing to go.
The shellac build is good but after spiriting off I lost some of the shine.
Hmm I am supposed to burnish the surface to compact the shellac but with the bridge in place it's kind of hard to do that.
The excess oil were removed with paper towel.
Those hard to reach area (e.g. bridge area, area besides the fingerboard) are easier to reach if I put a coin into the mueca during the polishing.



Shine is there but I will need to level sand the surface


20180731
I level sand the surface using oil and 800 grit.
Then I followed up with more polishing.
The effect looks much better



After level sanding with 800 grit and oil


The surface is smoother after the level sanding.


More polishing


20180920
I began to finish the back.
I stopped a while as I was thinking what to use to finish the back.
In the end I decided to use shellac.
Pore filling with dust wasn't working out too well.
In the end I use pumice.
The trick to use pumice is not to apply too much of it.
If too much is used it will get tacky and discoloured.
When that happens use more alcohol to level it out.

After a few bodying session, the coat builds up fine.
I polished a bit and things looking good.
I level sand a bit in between.
Some pores are still quite visible so I just a bit more pumice to fill them.
That's the good thing about using FP and pumice to pore fill; you can always go back and do it any time.


After a few bodying sessions.


Pumice


20180927
After a few sessions of polishing this is how it looks.
I level sanded a few times.
There are some along grain graduations though so when I do spirit off I did it in a traverse direction.
It did level it a bit so i think i will continue a few sessions to level them.



After a few sessions of polishing


Can see the reflections

2016-09-07

Prepare for finishing


20160805
I began my preparation for finishing process which is essentially sanding.
My top was quite dirty from all the dust and so I have to sand quite a bit.
Also I need to adjust some of the mode's frequency, especially long dipole down a bit.
After sanding the top looks quite good.



After sanding the top.


A closer look at the sanded top.


20160907
I sanded the back and sides thru the various grits of sandpaper.
They emit a smooth dull sheen after the sanding.
Some parts I will need to sand more to even out the surface.
For finishing the surface preparation is the key.



You can see the glow here


A closer look at the surface

2016-08-05

Shaping neck and Fretting the fingerboard


20160506
I also clean up the neck by thinning the neck profile and sawing away the 2 side excess.
As the neck blank is pretty thick I still have a long way to go.
I also need to clean up the back of the head.



Sawing the excess neck by the sides


Sawing the other side


Cleaning the edges until it is flushed with the fingerboard


Sides of the neck are now aligned with fingerboard.
Now to thickness the fingerboard.


20160512
I sanded straight the fingerboard and began to fret the fingerboard.
The steps are like my previous builds.
Straighten the fingerboard, Reduce the fret barb size, Cut the frets to length, trim the end fret tangs. Round the ends and install the frets.
But my progress is slow so I only manage to install 3 frets only.



Reduce the fret barb size


Trim the end tangs


Install the frets


20160513
I fretted until 12th fret and then string up to try the guitar.
The sound seems to get better than last time I tried (cant really be sure though mainly just a feeling.)
I did notice some buzz so I remove the fret and level that part of the fret board.
One thing I noticed is that it seems pretty easy to play the guitar.
Think this will be a winner.



Fretting done till 12th fret.


Close up view.


20160606
Just an update, I fretted the fingerboard to 12th fret and tried the guitar.
While the guitar sounds great, the fret work isn't.
There was buzzing at 4th 5th fret for the bass strings.
Visually I check the straightness of the fingerboard; it was straight.
Not sure where the problem is.
So I ordered a straight edge for checking and now waiting for the tool to come.


20160701
The straight edge came and I check the fretboard against the straight edge.
Indeed I was quite right the fingerboard was more or less straight.
So I proceed to fret and tried the guitar.
Still it was buzzing almost every fret.
Then I noticed the action was pretty low so I remake a saddle with higher action and viola... no more buzzing.
The action was now 3.5mm (T) and 4 on (B) and I can lower them a bit more.
Previous action was more like 2.5 / 3 ... no wonder it buzz like mad...
Anyway I finished up the fret to 18th fret and now it plays nicely.
Now to finish up the instrument and get ready for finishing...
What's left is to adjust the neck thickness and heel cap.



Finished fretting (well almost)



20160705
After solving the string problem, I began to reshape the neck.
I just use the spokeshave and the sandpaper.



Sanding the neck straight after removing the bulging area by spokeshave


Sanding the heel


The texture feels nice after sanding.


20160708
Before I start the finishing, I need to touch up some remaining parts.
So I glue cut the heel cap and glue it onto the heel.
The heel cap is made from the bridge cut-off and smell really nice when I sand it.
It is slightly over-sized and will trim it once I glue it on.
(On hindsight, I should make it correct size and trim the heel instead (easier to carve).
But if glued out of position, I won't have much to play around with. (So a locating pin will solve that).


Cutting to shape.


Filing to shape


Ready for gluing


Glued on


20160715
I shape the heel cap and neck.



Shaped the back of the neck


Shape the heel and heel cap


20160805
I cut the string clearance slot at the head and sanded the headplate and top.
This time round I did some design with the slot instead of a straight cut.
I also rounded the edges for the head.
I like a curve round edge look actually, though a straight cut usually will emphasize worksmanship usually...


Cutting the slots


Chisel away the part for string clearance


Done.

2016-07-05

Audio clips for guitar #9


20160705
Though the guitar is not exactly completed, I managed to record some audio clips from it.
I must say I am very satisfied with the sound.
It has that deep controlled bass but not excessive like the normal fan.
The treble is very even and balanced but right now the harmonics doesn't not appear much
This could be due to the very old string which I used for testing the sound and for adjusting the saddle and nut.
When I changed to new string I will record again.
The string used are old string Aquila Nylgut treble strings with Hannabach pure gold bass.

Here are some teasers...


La Catedral by Barrios 1st Movement Preludio

La Catedral by Barrios 2nd Movement Andante Religioso

Lagrima by Tarrega

Preambulo (intro) by Ponce

2016-05-13

Shaping neck and Fretting the fingerboard


20160506
I also clean up the neck by thinning the neck profile and sawing away the 2 side excess.
As the neck blank is pretty thick I still have a long way to go.
I also need to clean up the back of the head.



Sawing the excess neck by the sides


Sawing the other side


Cleaning the edges until it is flushed with the fingerboard


Sides of the neck are now aligned with fingerboard.
Now to thickness the fingerboard.


20160512
I sanded straight the fingerboard and began to fret the fingerboard.
The steps are like my previous builds.
Straighten the fingerboard, Reduce the fret barb size, Cut the frets to length, trim the end fret tangs. Round the ends and install the frets.
But my progress is slow so I only manage to install 3 frets only.



Reduce the fret barb size


Trim the end tangs


Install the frets


20160513
I fretted until 12th fret and then string up to try the guitar.
The sound seems to get better than last time I tried (cant really be sure though mainly just a feeling.)
I did notice some buzz so I remove the fret and level that part of the fret board.
One thing I noticed is that it seems pretty easy to play the guitar.
Think this will be a winner.



Fretting done till 12th fret.


Close up view.


20160606
Just an update, I fretted the fingerboard to 12th fret and tried the guitar.
While the guitar sounds great, the fret work isn't.
There was buzzing at 4th 5th fret for the bass strings.
Visually I check the straightness of the fingerboard; it was straight.
Not sure where the problem is.
So I ordered a straight edge for checking and now waiting for the tool to come.


20160701
The straight edge came and I check the fretboard against the straight edge.
Indeed I was quite right the fingerboard was more or less straight.
So I proceed to fret and tried the guitar.
Still it was buzzing almost every fret.
Then I noticed the action was pretty low so I remake a saddle with higher action and viola... no more buzzing.
The action was now 3.5mm (T) and 4 on (B) and I can lower them a bit more.
Previous action was more like 2.5 / 3 ... no wonder it buzz like mad...
Anyway I finished up the fret to 18th fret and now it plays nicely.
Now to finish up the instrument and get ready for finishing...
What's left is to adjust the neck thickness and heel cap.



Finished fretting (well almost)