Day 19

I've fallen behind in my blog-keeping duties.  Day nineteen is a few weeks behind me, and I have already done days 20 and 21- those will be up, shortly!

I spent this day doing what was necessary to aid in getting the back of the guitar attached.  I did many of the same steps for the front of the guitar.  I began by placing the back where it would go, using a pencil to mark where the braces intersected the lining, then starting the trimming process.  I used a saw and chisel to respectively cut and pry the excess off of each brace's tips.  Once the braces were trimmed, I carved shallow notches in the linings, to test fit the brace intersection.  After I confirmed that the notches were correctly placed, I continued the process, and made them as deep as each brace was thick.  

Now, the main difference between applying the soundboard and the back is that the back has a bit of a contour- it isn't completely flat.  This means that the butt of the guitar sits closer to the soundboard than the top of the back does.  To explain this concept better, think of the guitar laying on its top, with the soundhole facing down- the depth from the bottom to the top of the guitar (that is, the depth of the side), is greater, where the heel block is, than where the bottom/butt/tail of the guitar is.  The reason for this lies in the theory of sound propagation- it is better to have curves to project the sound, than a flat surface, that won't aid in deflecting the waves- think of how a speaker is shaped like a cone, instead of a disk, or how an amphitheater has a curved back, opposed to a flat one.

That being said, I had to use a plane to reduce the height of the sides at certain points of the guitar, to accommodate this curvature.  This was a bit of a finicky process, where I had to take off a bit, and test-fit, many times over.  I also had to do this at the heel block, using a plane to taper the point on the heel block, giving it a very slight slope, which was going down, towards the neck.  After all of this was done, I was ready to dry-clamp the back on.

After the dry-clamp was confirmed, and the seal looked flush all the way around, the glue was put onto the lining, and in the notches, and the back was put back on, and clamped into place.  

After giving it about 45 minutes to an hour of drying time, I removed the clamps, and had to do some glue scraping, on the inside of the guitar- THIS PART WAS NOT FUN.  I have pretty large hands, and without that disadvantage (in this scenario, anyway), it's not fun contorting your hand inside of a guitar, where there is low clearance, and even less clearance where the braces protrude.  This took me at least a half-hour...


The last step of the day was to trim off the excess wood around the perimeter of the back, as there was now about an inch of extra wood all around it.  Indian rosewood is a hard wood, while cedar is a softer one, so I wasn't able to fully utilize the ease of a whittling knife to do this, as I had with the soundboard.  Instead, I used a saw to get the bulk of of off, cutting what geometrically, on a circle, would be chords.  For the remainder, I believe I used the whittling knife a bit, but I definitely had to put a bit more muscle into it than I did with the soundboard.  And that was it.

After all was said and done, I had a guitar that had a front and a back, and I was able to tap the guitar at various points and hear different tones!  It was great.  The guitar was like a drum!  It's going to sound fantastic, once it is all strung up ;)

Days 16, 17, &18

It has been a while since I've updated the blog.  I'll condense a few days into one entry, since the days were very interrelated, and were spent doing a lot of the same processes, multiple times.  Here goes:

Days 16, 17 and 18 were mostly spent putting in linings for the top and the bottom of the guitar to be glued against, which add structural support to the guitar's body.  This included bending strips of basswood to the right shape, four times over.  I find bending to be challenging, sometimes- it definitely takes some getting used to.

Once the basswood linings were bent to the proper shape/form, I clamped two in at a time, without glue, to check the seams where the basswood met the rosewood.  Once everything looked good, and I was sure there were no gaps, I applied glue to each side of the 2 linings, and glued them into place. 

The clamping of 2 linings

I didn't glue them flush with the tops of the sides, but roughly 2.1mm below, to accommodate the top of the guitar.  I used nearly 50 clamps to keep them secure, and then waited about 45 minutes before removing the clamps to scrape away the glue squeeze-out.  I then did some planing, to make the sides nice and flush, and had to carve the linings, as well.  While the gluing surface stayed at its original width, the lower part of the linings were tapered down, to reduce mass, and create a pleasant aesthetic.

The profile of a lining

While the glue was drying, I added a shellac seal-coat to the exterior surface of the soundboard, with a cottonball wrapped in a small piece of cloth.  This was done to protect the wood from any potential blemishing or discoloration from darker sawdust that it might come into contact with, or any other contaminants, between the point of application and the time of adding the final finish.

Applying the shellac seal-coat to the soundboard

Next, I had to fit the top.  I had to centre it with the fingerboard and tail strip, and then I made lines indicating where the braces needed to be cut, as they were longer than they needed to be, as was expected.  I sawed a little bit off of each brace, and fit it again.  I did this a couple times, to get it right.  Since the braces were now just sitting on top of the linings, I had to carve out a little recession in each lining to allow the braces to sit within them.  I did this with a chisel.  Once everything was fit properly, I did a dry clamp of the top, with a jig that Ned had kicking around.  It is made of MDF (medium-density fibreboard) with a fibrous barrier on one side, that was probably 4 inches thick.  This ensured that a soft

The clamping/gluing of the soundboard to
the top linings

 surface was pressing against the top, so as not to damage it.  The fibre compressed as the clamps were applied, and everything looked pretty good.  Once it was confirmed that the fit was right, I applied glue, and clamped it into place.  I waited 45 minutes or so, then unclamped to do more glue scraping.  I also had to trim off the excess of the soundboard's perimeter, as there was a safety margin of wood left on, which was, at that point, safe to remove.  This was probably a centimeter or two around the whole soundboard- I used a whittling knife, and a plane, mostly.  The cedar was quite soft, so these tools proved to be effective.

Using the drill press to bore holes in the bridge

The bridge, after the shellac seal-coat

The second pair of linings had to be added- this step was done in the same manner as the top linings-  bending, gluing, clamping, scraping, and carving.  While these dried, I drilled the 6 holes in my bridge, where the strings were to be tied on- for this step, I used a drill press.  After the holes were bored, I used some precision tools to clean up the "exit wounds."  Finally, I did a shellac seal coat on the bridge, which made it look really nice.  It darkened the rosewood, and added a nice sheen.



Additional pictures:

Some nice-looking shavings from the plane-
basswood intertwined with Indian rosewood

 

Here's a nice shot of the guitar coming together- I especially
like the shape of the heel block.

Me and my masterpiece :)

Day 15

Saw this little guy on my way to the shop.

Got a good bit done, today.  Before starting the day, Ned made a list for me of tasks to complete.  I got 5/6 of them done, by the end of the day, which wasn't bad, in my opinion. 

I'll try my best to recollect what the list consisted of:  cleaning up the sides, getting the tail strip glued on, cutting the sides to prepare for gluing, gluing the sides to the neck, gluing the upper linings into place... and something else that I can't quite remember.  Maybe it'll come to me, later...

I began by starting on the step that involved the tail strip.  I had a tapered piece of ebony to put where the sides joined at the tail, so I placed the ebony where it needed to go, and drew lines to indicate where it would go.  I then used a small pull-cut saw to create 1mm cuts, corresponding to the location of the lines I had drawn.  I then used a chisel to create a channel for the tail strip to sit in, between the two cuts I had made.  The cuts helped to prevent any grain tear-out/splintering during the chiseling process- they were also evidently a visual perimeter of where

The beginning of the chiseling process

the chiseling was to be done.  I chiseled away for a while, and fitted the ebony strip in.  I also had two very small strips of maple that would go on either side of the ebony, serving as a contrast between the darker woods that were Indian rosewood and ebony.

I did a dry clamp of the three pieces of wood, before I got ready to apply the glue.  It was a tight fit, which I thought seemed pretty good.  After the dry clamp, I got the glue out, and began to apply it.  Ned came to see where I was at in the process, and was quick to show me a more efficient way of applying the glue for the process (I tend to over-think things, sometimes).  The glue was applied, and the pieces were put into place.  A thin block of wood was used to clamp onto, and two clamps were tightened into place.  I eventually placed a third and smaller one, just for security.  Getting the glued pieces into place was a bit of a challenge- as I said before, the dry clamp of the wood was tight; I hadn't accounted for the swelling that the wood would do, after the glue application, but all's well that ends well!

The tail strip, with glue and clamps applied

Once the tail strip dried, I began doing some scraping.  The ebony and maple stood above the Indian rosewood, so it had to be leveled.  I scraped it from various directions, and then moved on to cleaning up the sides a bit, since I had the scraper handy.  This mostly consisted of scraping off any dark spots created from the heat burning the wood during the bending process.  Ned did a little tutorial for me involving methyl hydrate- this is used to disperse the dye of the Indian rosewood.  Next time, I'll use that to get the sides closer to completion.  I am pretty sure I'll be doing this to the back of the guitar, too, as it is also Indian rosewood.  Once I finished with the tail strip, I moved on to the next step, which would involve gluing the sides into the heel block.

Ned and I put the sides into the form that he had made.  Measurements were roughed out, and lines were drawn.  Once I had made the lines indicating where I was to cut, I grabbed a cutting block, a saw, and got to work.  I cut the sides to length, and then tailored them a bit more.  I used a small plane to fit them into the slots in the

The tail strip, after the scraping.  Sharp!

heel block.  Once they fit well, it was time to glue.  I filled the slots with glue, then fit them into place, cleaning up the squeeze-out along the way.  Once I had everything set, I looked it all over:  the sides were now glued into the heel block, which is affixed to the end of the neck.  The guitar was starting to look like one.

Towards the end of the day, I pulled out my linings to get them ready to glue.  It came to my attention that I hadn't quite finished bending them, so I got to work.  After getting one bent into shape, I measured and cut it to the proper length, so that its ends fit against the tail and heel blocks.  I began working on the second lining, but time intervened. 

All in all, the day was a good one- I got a lot done.  The guitar's shape was starting to come together.  The only thing on the list that remained was to get the linings glued into place.  Well, that, and finishing up the cleaning up of the sides, with the methyl hydrate, but that would be a fairly easy step.  Next time, I'll do these things, and then attach the soundboard, I believe.  I CAN'T WAIT FOR THE GUITAR TO BE DONE!

Day 14

Ok.  So both of my sides are bent.  Today I'll be bending some basswood linings, trimming the sides, and begin joining them.  I'll also work on my bridge a bit more.

The bridge work I did today consisted of filing, mostly.  I used a few different types of files to flush up the edges of the bone with the sides of the Indian rosewood tie block.  After everything was flush on all edges, I used the files to soften/round the outer edges of the bone.  Doing this makes the finished result look nicer, and it also reduces the chances of any chipping occurring on the sharp outer edges of the bone.  I refinished the whole thing over with a milling file, and then with two different grades of abrasive pads.  Boom.

Next I began getting my tail block ready for gluing the sides together.  The piece was a small flat block of mahogany.  Before gluing, I had to give the surface that was to be glued a slight camber, as the bottom of the guitar, where the sides join, would not be flat, but would have a very slight curve.  I took the piece of mahogany and gave it the desired effect with sandpaper, doing one side of the block, at a time.  The centre of the block would stay the same, but each of its edges would have to be reduced very slightly, and the transition between the reduction and the centre of the block would have to be made fluid, to properly fit the curve.

Ned put some strips of basswood in the bathtub for me, to let them soak in preparation for bending them.  After they sat for a half hour or so, I began bending them.  He briefed me on their qualities and characteristics, and told me what would happen when I bent them.  Basswood is much softer than Indian rosewood, so I would have to be a bit more gentle on them.  He also let me know that a sort of crumpling effect would take place when bending them, as the surface touching the heating peg would sort of fold in on itself, while the outer edge would stretch.  I began bending, and got the feel for the wood.  I noticed quickly the effect he spoke of, and learned how to sort of blend the crumples together, to make the interior smooth.  I got two linings bent, fitting them to the inside curve of the already bent sides, as this is where they would be glued.  There would be four, total.

After getting two of them done, Ned said it would be best for me to begin cutting my sides, getting them ready to glue together- so I did.  I fit them properly in the template/jig that he had built, and began marking lines where I was to cut.  Essentially, the sides were longer than they needed to be, so I had to trim a bit off of each end.  The bottoms would sit flush together, whereas the tops would fit into the heel block, so they were cut shorter, just shy of the halfway/centre point of the guitar.  I used a square to mark lines on all four sides, fetched a cutting block, clamps, and the pull-cut saw, and began cutting.  

I clamped the sides back into the jig once I was done, and inspected the fit.  Not bad at all!  I took them back out, and got ready to clamp the sides together, with the tail block on the interior wall.  I did a dry clamp, first, to make sure everything was flush.  Four standard clamps were used.  I applied glue to the tail block, set it in place, and put a small sheet of wax paper on the exterior seam of the sides.  I then applied the clamps, after fitting the sides on.  I saw a good bit of glue squeeze-out.  Good stuff.  I used a cotton ball to remove some of the squeeze-out, to make it easier on me, once the glue was dry, as it would've been a bit

more difficult scraping the dried glue off with a wood scraper, on a surface that has a slight curve.  Hard to explain, but yeah.  I set the clamped assembly aside, to let it dry.  I believe that was essentially it, for the day.  Next time, I will be bending the other linings, and gluing the top of the sides into the heel block... or so I think.  Can't wait!

Also- I will be out of town for work, next week, so I will not be updating the blog until the week after next.  Unfortunate...

Day 13

The thirteenth day.  One thing Ned and I discussed on this particular Tuesday was the length of the project.  Him knowing the rate of progress, and the steps involved, he made me aware that we were going to end up going over the estimated twenty days of work.  My guess is that the project will probably end up being between twenty and twenty-five days of work.  Que sera sera.

I started the day off with a bit of work on my bridge, I believe.  Sometimes when I recollect what I did in a day's work, I forget what order I did things in.  Anyway, to the bridge... I had to shape the tie block, and give it a bit of a slope, with the high end being the end that was to be nearest the bottom of the guitar, and the low end being that which is closest to the saddle. 

Here's the bridge- you can see the slope I gave
to the tie block, on the left.

I did this with a plane and file.  I clamped the bridge into the vice, and began with the small ebony plane.  After getting the bulk of the work done with the plane, I finished it off with a file.  The surface had to be completely flat, and smooth, as it would be a gluing surface- a strip of ebony and two small strips of bone would go here.  Once the bridge was done, I did some work on the small piece of ebony that Ned cut for me.  I had to reduce its width to fit the tie block's width, with an allowance for the two small bone strips.  If I remember correctly, the tie block was 11.5mm thick, and the collective width of the two bone strips was about 3.75mm.  This meant the ebony  strip had to be about 8.4mm.  The small strips of bone were to overlap the tie block very slightly, and they would be made flush with it, by means of a file.  so I used the same ebony plane to ready the ebony for gluing, which mean reducing its two sides, making them straight and flat for a gluing surface, where the bone was to be adhered.  Once all was said and done, I placed a sheet of wax paper on the bench, and we got some wedges ready to glue the bone and ebony together.  This part was tricky.  Ned did most of the configuring in the gluing process, as he has done it countless

The small strips of bone

times, and it was just a bit quicker, that way.  I applied the glue, and we let the bone and ebony set.  A few jokes were made, in the process, involving "ebony and ivory."  Haha.


The ebony and bone bits were left to dry, and more work was done, in the meantime.  I got my sides out, and took them upstairs.  They were to be soaked in the bathtub for a half an hour, or so, so I drew a bath for them, and placed them in the water.  Lunch happened, and then the sides were taken back downstairs, to the shop.  Before lunch, Ned had turned the heating peg on, which was used to bend the sides.  The sides were about 2mm thick, if I remember correctly, so they have a bit of natural flex to them.  Once heat is added, is makes them even more malleable.  I did a practice run of bending on a long, thin piece of ebony, to get the gist.  I then started bending the sides.  I was very cautious at first, as I didn't want to apply too much pressure, which could result in severe damages.  I got the hang of how much pressure to add, what motions to make, and how long it takes to heat the wood before the wood sort of "gives."  The bending took most of the afternoon, save for a portion that was spent on gluing the ebony and bone pieces onto the bridge's tie block.

This is the heating peg I used to bend the sides,
stained with residue from the Indian rosewood.

The bone and ebony were taken out of the wedges, where they were glued, and were reduced on the belt sander, to get excess glue off, mostly.  I then applied glue, and clamped them into place.  While I was doing this, Ned had a client in- I introduced myself, and Ned told him what I was doing, as I continued my work.  I used 3 small clamps, placed equidistantly across the length of the tie block.  I made the edge closest to the saddle flush, and left the slight overhang at the back of the tie block, as it is easier to access with a file, without having the saddle in the way.

Here's the bone and ebony, being glued
and clamped to the tie block.

Once the sides were finished, they were placed into a clamping jig, which was in the shape of the guitar.  This essentially kept the sides in the shape they were in, while being stored for the week or so that I was to spend away from them, before they get glued.  The sides may need a small finishing touch before the gluing process, but I'm not entirely sure. 
 

Here's one of the sides, bent to shape, and wedged to
a form that Ned made.  Both sides are now bent, but my
camera was too low on battery to take a picture.
Next time!

Day 12

Day twelve consisted of much more work on the headstock/neck/heel block unit of the guitar.  If you saw entry 11, you'd know that I did plenty of filing work on the headstock.  I did some more work on the base of the headstock, namely, the transition into the neck.  Let us begin.

The end result- you can just make out the V-shaped
transition.  I'll take better pictures at a later date, to further
illustrate the effect.

I started the day by wrapping up the beveling on the edges of the headstock laminate; just some finishing touches.  By the time I was done that, I had decided which type of transition I was to do on the back of the headstock, where the neck begins.  My options were a curved "V" type of transition, a standard curve, or a bell or uvula-shaped-type of curve.  It was decided that the V-shape was what I would go with, and luckily, Ned said that this was probably the easiest of the three to achieve.  As the neck was still very much a rectangular block of wood, I had to take plenty of it off.

To remove the wood, I began with a coarse round file, to get the feel of the actions I would be taking.  Upon becoming comfortable with the strokes and their shapes, I moved on to a bigger tool, with more bite- a rasp.  I used the rasp to reduce the edges of the neck to curves on both sides.  Before I started, I used a round object to make the outline of the V-shape.  Each segment of the V was essentially an arc of a greater circle, with the peaks pointing towards each-other.  I used the rasp for some time, and towards the end of the process, I transitioned into using files, which would take away less wood with each stroke.  The desired thickness of the neck at the top was to be about 17mm, before accounting for the fingerboard.  I used calipers to measure the section that I had reduced, putting the caliper tips on each side of the ebony center strip, as its edges were the highest and lowest points.  I did some finishing touches to keep the height consistent, and finished the rounding of the back of the neck.

After a good while of work on the top of the neck, it was time to move to the base of it- to the heel block.  There being a large amount of excess wood at this end, Ned did a quick chop for me on the band saw, which would make things much easier.  This yielded a block of wood for me to take home, which I had ideas of making little gifts out of (it contained mahogany, and the ebony centre strip, as well).  I took the neck in my hands and felt the weight that had been taken from it- it was great!  One step closer to completion.  I clamped the neck down to the bench, with a couple clamps, placing a block of wood (softer than mahogany) below it, against the surface to which the fingerboard was to be adhered.  The reason for this was to keep that surface unmarred, and free of blemishes of any sort, to ensure an optimum bonding surface.

I began by using a little template, whose shape resembled a boat, from above, to mark the outline of the heel block's flat surface, which would be attached to the back of the guitar.  After using central lines to align and mark it, I got to work.  In the previous session, I used another template to mark the side profile lines of the heel block, so I now had an idea of the shape of the heel block, from the top and sides.  I began removing wood with a chisel- I found this process much to my liking.  I chiseled away at both sides for what was probably one half-hour, or thereabouts.  Once I had the shape pretty close to what it would be, I began using a rasp.  For time's sake, I will summarize the process:  I used the rasp and various files until the heel block was at the desired shape, which took much time, to make everything fluid and aesthetically appealing.

The heel block was the last step of the day.  At this point, both the top and the bottom of the headstock were done.  The curves at the top and bottom of the

The end of the chiseling process

neck were defined- all that remains on the neck is joining the two curve transitions, which will complete the neck.  Any finishing touches on the heel block and/or headstock can be done before the finish is applied to the guitar.  Ned told me that the next piece of the puzzle may very well be bending the sides, which is something I have yet to put my hand to.  Exciting!  The day draws nearer where the pieces will begin to be joined... ahhhh, yes.

That about does it for this entry- I will throw in a few extra pictures below.  Until next time!

The complete heel block.  Oh!  If I'm not mistaken, there is
still a bit of wood to be taken off of the back of it... but I may
very well be mistaken- I can't quite remember.

Ah, yes- I almost forgot.  I took a picture of the back of a guitar that Ned just started on, today.  The guitar will be a flamenco, which he is building for one of his clients.  The top is Lutz spruce, and the back is a variety of Maple (I'm not sure which).  But the reason I'm mentioning this will be evident, once you see... the grain patterns are beautiful!

There will be a centre strip, containing strips of ebony
and maple.

Day 11

Running behind on the blog!  Day eleven took place on Friday, May 10.  I didn't take as many pictures, this time, so not every step is individually depicted, but you'll definitely see the sum of the steps in the pictures that are shown

Most of the day's work was spent working on the headstock.  When I started that morning, the headstock was still in need of a lot of work.  The routing job had been done, which gave it its shape, but the router can only do so much- all of the finishing touches would be done with various types of files. 
 

To start, I took a template which was the shape of the headstock, placed it upon the top, and used a well-sharpened pencil to mark  portions of the headstock that needed to be removed via filing.  I started with a very small square file, and switched back and forth between that, and a small triangular one.  The points on these files assisted in achieving the troughs that are seen in the top profile of the headstock.  I defined each trough, and made sure everywhere in between was smooth, and fluid.  I used a half-round file to centre the peak of the headstock, which was where the ebony accent strip that runs the length of the neck/headstock ends. 

The second major step of the day was creating string ramps.  String ramps are found between the guitar's nut and the peg to which the strings are affixed.  There are a few different ways to do string ramps- the two I was choosing between was rounded fronts, or flat ones- I ended up choosing flat.  The look reminded me of church windows, or some other sort of window, having a flat base, and a rounded top.  This step took a good while.  The African wenge laminate is a very hard wood, so filing takes a lot of effort.  I filed the ramps, giving them a very apparent grade, ending just below the taper point, near the base of the guitar's headstock.  I did a bit of a hybrid ramp, having flat bottoms, that transitioned into a curve- Ned complimented my design.  Once the string ramps were complete, it allowed you to see the wenge, maple, and mahogany all at once, which was very nice.

String ramps

During our lunch break, Ned observed that it was a nice day, with little to no wind.  Him having an interest in remote-controlled helicopters, he decided it was a good opportunity to fly!  I believe this was the first time I had ever seen an RC helicopter in action, and I must admit, it was pretty neat.  I spent 5 or 10 minutes watching him fly.  

The next step I worked on was the beveling- all of the sharp edges were beveled, for aesthetic reasons, and also for functionality.  Having a beveled edge reduces the chance of chipping, and permits a better bond for the sealing of the guitar, reducing the chance of the finish being rubbed off, at a corner.  I did all of the beveling with files.  The profile at the top of the headstock, the entirety of the routed channels and string ramps, and the perimeter of the headstock were beveled.  I also softened the back edges of the headstock, and gave the back corner of the peak a slight round.  This process took some effort- like I said, the wenge is tough.



This was essentially the last step of the day.  There were a few little touch-ups I did, throughout the day, that were just for cosmetic purposes, but nothing too substantial.  Files were the tools of the day, and they did their jobs well!  With my help, of course ;)

Here are a few supplementary pictures: