Tuesday, October 30, 2007
Tuesday - The Beginning of the Finish!
Monday - Rope Burns!
Sunday, October 28, 2007
Sunday - Covered Bridges and Mountains
Took off for the Green Mountains. Beautiful, but I missed the fall colors by a week or so.
We could take a lesson from Vermont - rare to see a big chain store. Not a lot of cell phone towers. Hardly any homes built into mountains. Just trees. And beauty.
Saturday - Sweatin' Bullets
The next thing to do was to put in a binding and purfeling channel. These are decorative strips of either plastic or wood surrounding the guitar body. In order to do this, one must use a router and a special fixture attached to it.
Then carefully go around the guitar body and cut out the channels.
Piece o' cake, one might say. Knowing how a router operates, and knowing that it is moving at 20,000 rpm with a 1/4 inch bit that can rip a large mass of wood out of my precious guitar body made me just a tad nervous. Such a tad nervous that I was soaking wet by the time I was done with the process.
George being the master craftsman and master teacher made people feel at ease with the process, and developed an almost goof proof system to do it. Surprisingly, it looks pretty good! In fact, it looks great!
Saturday, October 27, 2007
Friday - I hear and I forget, I see and I remember, I do and I understand
Contouring the sides in preparation for the back
Finished contoured back
We then prepared the back to fit, by scalloping the braces, checking the fit (this happened several times) the drawing the final cutting pattern out (we had left the back about 1/4 inch wider all the way around to prepare it for a perfect fit). We then made a final cut on the bandsaw.
We then "test" clamped the back to prepare for gluing. In this guitar making business, it is smart to prefit everything. We then glued and clamped the back.
Back clamped together
A few hours later we took the clamps off. Looks like a finished body, but nothing is ever easy in this guitar making business. Tomorrow - the edge bindings!
Thursday, October 25, 2007
It's a Guitar! (almost)
It does look pretty cool though! That's my t-shirt you are seeing. Got to do the back tomorrow!
The rest of the day was spent reinforcing the inside of the body with thin strips of veneer at key "cracking" points. We also prepared a special lamination for a future extra sound hole.
Wednesday, October 24, 2007
Week Two! Monday, Tuesday, and Wednesday
Monday Bending sides!
We bent our sides, binding, and kerfing strips today and joined them together.
This is the side bending fixture. It has three 200 watt light bulbs inside and is what we used to form our binding strips, kerfing, and sides.
We then attached the kerfing strips to the sides. Notice the saw cuts in the strips that are attached to the sides. These are called kerfs. They allow the thick strips to bend rather easily, yet when bent provide a great deal of support for the sides, top, and back. Great engineering - thought of many years ago!
Tuesday - Hand tools and craft.
Watching a craftsperson at work is truly an amazing thing. Today George showed us how to take our bracing which was glued to the top last week and produce and instrument with tone. We used hand tools - chisels and little tiny hand planes about 1 inch long then cut down the bracing on the top. It took a piece of wood that sounded like a brick, and produced an instrument.
The beginning of day!
Finished!
George demonstrating how to check for tone on a soundboard.
Wednesday - Let's make something that looks like a guitar!
Today we worked on preparing the soundboard and neck to meet
We fit the neck and top together and checked alignment.
We then glued the neck block to the top.
We prepared the sides by hand planing and then running them through the jointer. Nothing like taking paper thin wood and running it through a machine that can rip your arm off!
Monday, October 22, 2007
Sunday - Our day off
I actually had time to take a walk around the lake when we got back "home." Ended up at a cemetery and walked around a little - appreciating the history of the area.
Sunday, October 21, 2007
Week One!
I finally arrived and have been without an internet connection. We are having a day off today and I will post the week's comments on our work below. I will add pictures later which will help explain what had been happening.
Sunday – Information Overload!
The first day of class. Wow! Beautiful place, wonderful people. George and Pippa had the group for dinner the evening before and we were all fed way too much! The berry cobbler was a hit. We awoke in great shape Sunday morning ready to go.
George introduced us to the theory behind the acoustic guitar – that in an acoustic guitar, the wood is the tone control, unlike an electric which can be dialed in. We learned about the cellular structure of wood (this shop teacher kind of learned that 35 years ago, but wasn't paying that close attention in class at that time). We learned that by quarter sawing wood, wood was produced that provided a more efficient transmission of sound and was also stiffer – important stuff when dealing with the thin material that makes up a guitar body.
We got some great information on the whole makeup of the guitar, the wood used for the top, sides, and bottom, how the bracing provides both strength and transmission of sound, and how the neck relates to the completed instrument.
After lunch we picked out pieces for our top, learned how to select the pieces by both looks and tone quality, and glued them together.
This old guy was taught a few new tricks to get the cleanest edge for gluing. Great beginning!
Monday – Necks and Backs!
We made some patterns out of poster board in the morning – a pattern for the back and top, and a pattern for the neck. More great information – I am prepared to modify my design on my second guitar, custom made for my friend Loren. His fingers are a little shorter than mine, and by adjusting the frets on the scale and making a slightly smaller neck he will be ripping out the tunes on his new axe!
We cut and glued the neck to provide the proper angle for the head joint. Then we picked out our back wood – I chose a beautiful set of maple. We then did basically the same process of gluing that we did for the top.
Tomorrow we will cut out the soundhole and install the rosette – should be fun!
Tuesday – Rosettes and Routers
In order to prepare for the rosette, we needed to determine the location of our soundhole. This is based on how many frets we decided to use on our necks. I chose a 14 fret neck, which is common for a larger acoustic, and a total of 20 frets to the soundhole. We then needed to calculate the width of the rosettes, so we could determine the proper location of the router and guide which would cut out the channel for the rosette. Victor and I chose a design which would require 3 separate passes with the router.
Once that was done, we needed to prepare the wood for the top. This required planing and scraping. Once again I learned new ways to sharpen tools and was reminded of the incredible power of a simple scraper blade to provide a smooth top. We used a really neat plane – an Asian design, and a tool which I will purchase when I get home. Once the top was smooth it was time for power tools and fear of destroying two days of work.
Victor and I worked together on our layout, since we had the exact same design. It was good to have another brain working, as mine was a little slow at times. We used a router with a special adjustable fixture attached which allowed us to make a perfect circle.
We cut our circles, and then it was time to fit in the rosettes. Which didn't fit. George showed us a great trick to bevel the lower edges, and we pushed them into place with a veneer roller. Perfect fit!
Wednesday - I've got blisters on my fingers!
No, it wasn't because I was playing the drums like Ringo lamented. Although my buddy Mike would be a happy camper staying here in the dorm, as there is a full drum set just sitting and waiting for a little Wipe Out action. This morning was planing and scraping. Three hours. An appreciation for the craft, and the use of hand tools to provide a balanced top, which will provide a beautiful tone. We scraped our rosettes clean, and then flipped the top over. The top was approximately 200/thousands of an inch, and we needed to take it down to .125 inch. Time. Patience. And constant checking with the neat caliper that George designed.
Another tool to make when I arrive home. Each plane stroke removed about .002 inch, so, quite a few were needed. Plus constant checking to make sure one area did not get overworked. All done with human power. And great tools.
Once the top was planed and sanded to thickness, we could cut out our shape.
Thursday Catch up Day!
The morning was a time for everyone to get caught up. We also started to design our the headstock of the guitar – everyone was encouraged to to their own design. I looked at several, and picked out a pretty traditional idea, drew it out, and transferred it to poster board.
We selected an ebony piece for the peghead – hard wood that can accept the tuners and stay in good shape. We chose contrasting veneers to be glued under this piece, and glued and clamped the sandwich to the headstock.
Jack routed a channel for a decorative insert on his guitar – I will wait until another time for that challenge. George's experience once again came through as he told us to always use epoxy resin when gluing a structural member such as this.
Using a fixture set at 15 degrees, (the headstock is 15 degrees lower than the neck), George showed us how to produce a straight 90 degree cut, so the plastic nut can sit accurately. Another example of precision work made easy by learning from a master of his craft!
We routed a channel in our neck stock to accept a special metal truss rod which will relieve the tension on the neck caused by tightening the steel strings.
We also cut a slot (mortise) in a block of mahogany which will accept the tenon (also cut today) on the neck. This will be bolted on to the body later. We cut our sides to prepare them for bending on Monday.
Friday – Cool Looking Headstock!
We transferred our headstock design to the actual neck piece.
We were encouraged to check for clearance for the strings. We then cut the shape out on the band saw – another place to make a major mistake – everyone came through without error.
George showed us an awesome method to bring out the beauty of the veneer under the peghead using files and rasps to bevel the edge.
We then drilled the 6 holes for the tuners – another place to mess up the whole thing – and we all survived undamaged.
In preparation for bending the sides we “kerfed” 4 basswood strips which will be glued to the edges of the bent sides. This will add considerable strength to the very thin side pieces.
The rest of the day was spent working with spruce brace wood and designing our bracing pattern for the top (soundboard) of the guitar. The pattern is designed to provide both strength and tone quality. Strength is especially needed where the bridge is placed. Each luthier has their own design – all intended to provide strength and quality sound.
George then demonstrated a most awesome clamping technique using bamboo rods and a special table which is used to glue the irregular shaped brace pieces to the top and back.
Saturday – Day 7!
I love my walk to the shop in the morning!
This morning we beveled the top brace with a special sanding block. Then we glued the top brace of the soundboard using the beveled table side of the special clamping fixture. After an hour of clamping time we then flipped the table to the flat side and glued the rest of the braces.
I worked on my binding material – this is the material which will match up the top and bottom with the sides. I chose maple with an ebony veneer edge. George showed me how to easily glue and quickly clamp the strips together. This will make a truly beautiful transition piece on the finished guitar.
We also worked on the back bracing – a little simpler pattern, but the back has the addition of a spine brace down the center of the back. This piece required beveling, clamping, and planing.
Tomorrow is our day off! We are going to find some lumber and make some of the jigs and fixtures that George uses.