Last Update: 02/22/09
New Lattice Model
Sound Sample(1mb) of 7x7 cedar lattice bracing(No Carbon Fiber)
Sound Sample(1.2mb) of 9x9 balsa lattice bracing with Carbon Fiber.Adj.Neck model.
Current R & D projects include work on a milled carbon fiber/epoxy fingerboard as well as Diamondwood fingerboards.
|Balsa lattice bracing being shaped to the dome shape of the top.
|Inside view of adjustable neck model. Interior veneer is Australian Jarra.
|Adjustable neck features an allen bolt between the 17th and 18th frets. There is no degradation of sound quality with this style of neck.
|The "guts" of the adjustable neck. It is held on by the pull of the strings. There is a small mortise and tenon joint that acts as a vertical stop and the neck pivots off a horizontal piece of carbon fiber. The set screw in the neck/fretboard adjusts the action.
|The guitar is strung up prior to binding and purfling the edges of the guitar so I can make final adjustments to the resonance of the top. This photo is of the monopole vibration mode. Here is a
Sound Sample(1mb) of the adjustable neck model prior to having the finish applied.
|The adjustable neck model features a different shape to the heel that helps prevent any side play in the neck.
|Here is the typical veneer sequence for laminating the sides.
|Fresh out of the mold. inside view of the sides.
|Fresh out of the mold. Outside view of the sides.
|Inside the body prior to attaching the top.
|The upper bout is solid. Only the lower bout is active. This is not a problem because the upper bout adds nothing significant to the sound of a guitar.
|The adjustable neck is reinforced with carbon fiber bars and hard maple.
|The first two Schramm lattice guitars! Notice the arm rest on these guitars. The arm rest prevents the player from touching the top allowing more of it to vibrate.
|Back of adjustable neck model.
|Top of adjustable neck model.
|Mold for the back.
|Adjustable neck style body prior to attaching the back.
|Summer 2008 chassis design with deeper molded back.
|Top view of the Summer 2008 chassis.
|Scooping of the "A" bracing.
|Inside view of the Summer 2008 chassis.
|2008 design with extra heavy density balsa bracing and carbon fiber.
|630mm short scale lattice guitar.
|2008 elevated fingerboard model lattice guitar.
|Back being molded in the vacuum press.
|Back removed from vacuum press. Inside view of back.
|Back removed from vacuum press. Outside view of back.
|Back being cut out.
|Arching of the back. No braces are needed for these backs.
|Back ready for clean-up.
|2008 molded back.
|A 2009 Schramm lattice guitar with the lattice being glued to a soundboard via vacuum clamp.
|Built in August 2008, this lattice guitar has an adjustable neck system similar to the design of Greg Smallman. At this stage I "voice" the instrument with the back off! I remove wood at specific locations to adjust the timber and feel of the instrument. Believe it of not guitars sound just as loud without the back.
Here is a Sound Sample of this guitar without the back prior to any adjustments.
Here is a Sound Sample of the same guitar after adjustments.
|Close up of the same 2008 guitar.