Top Adirondack Spruce, 3A grade, classical/000/OM, tempered
Adirondack Spruce was used for the tops on many of the great pre-war American guitars. Many
In general, the visual/cosmetic quality in use today by the best builders and high-end factories (typically the 2A (AA) tops) has more grain and color variation than either good Sitka or Engelmann Spruce - but that variation has been accepted in acquiring and working with this fine, great sounding wood.
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Additional Grading Concerns with Adirondack
Here is how we factor in some of the less desirable features of Adirondack Spruce when grading our highest grade 3A tops:
Winter grain (dark grain) - We will only allow this when we see tight grain in the center and if it does not detract from an overall lighter color impression from the whole top. Normally it is only going to be on the outside edge of the top. If winter grain is found elsewhere on the top (somewhere in the middle) it is because it is not visually overbearing and because the tightness and evenness of the grain is so exceptional.
Wide Grain - This is allowed if the top has an overall even and light color (rare in Adirondack). It may also be allowed in less evenly colored tops if it only appears on the outside edge and appears gradually.
Uneven Grain Spacing - This is allowed when the overall color impression is basically light and even or if the grain (especially in the center) is exceptionally tight.
“Tempered”, “Roasted”, “baked” or 'cooked' woods are exposed to temperatures of 350° to 425° Fahrenheit (about 180°-220° Celsius). They are "cooked" in a vacuum chamber so that there is no flame or burning. The process is called 'torrefaction'. There are a number of positive results with tempered wood including a darker color, greater stability, feel, and tone.
- Wood Species
- Adirondack Spruce
- Shipping Restrictions - Location
- No Restrictions
- 3A Grade
- Classical/OM/000 or smaller
- 20" or 50.8cm
- .120"+ or 3mm+
- Top Width
- Lower bout 15" or 38.1cm Upper bout 11 1/4" or 28.57cm
- Yes, tempered