I learn so many cool things here.
I learn so many cool things here.
"To be obsessed with the destination is to remove the focus from where you are." Philip Toshio Sudo, Zen Guitar
I read that primitive folks in northern regions used reaction wood from spruce or pine to make their bows. There were little to no suitable hardwoods for this in the regions and the reaction wood combined with sinew backing provided the strength.
I haven't measured properties but if it is srtronger in compression it may be good for stability of top under the string load.
Adrian
IIRC, reaction wood in conifers is stronger in compression while reaction wood in hardwoods is stronger in tension.
Clark Beavans
I am having a bit of trouble understanding reaction wood. I tried googling it without much success. Does it have to do woth the thickness of the winter vs summer growth?
Bob Schmidt
Trees have the capability to optimize the location of xylem cells in response to a load (wind, gravity, etc). For example, a branch growing off the main trunk has a constant load of gravity acting in a downward direction. To support the load, conifers grow more xylem cells on the underside of the branch (in compression). Hardwoods have the opposite strategy: they grow more xylem cells on the top side (in tension). If you look at the cross section of a branch, it will usually be somewhat oval because the tree has grown xylem cells where they are optimized for strength. This is also one of the reasons trees have taper, because they are exposed to wind loading.
I think "reaction wood" is better understood by looking at the entire annular growth increment, rather than just the difference between earlywood and latewood in conifers.
Clark Beavans
Getting close...
Charley
A bunch of stuff with four strings
Will it be bowlback? :-)
Re reaction wood... In conifers, the reaction wood's cells have MUCH thicker cell walls and they contain different percentages of the main chemical constituents, I believe more hemicellulose and lignin than "normal" wood. So it's not just thicker summer growth.
Adrian
In other woodworking, reaction wood, especially limbs, is avoided as the anisotropy makes it unstable after milling. That is, the object may warp. On the other hand, using the whole naturally bent limb or trunk can be the strongest, as in timberframe or ship construction. At least that’s what I recall.
In another beautiful canoe tech, the very lightweight Adirondack guide boat, ribs are plucked from the forest in nearly their final shape, or used to be.
Jim
My Stream on Soundcloud
19th Century Tunes
Playing lately:
1924 Gibson A4 - 2018 Campanella A-5 - 2007 Brentrup A4C - 1915 Frank Merwin Ashley violin - Huss & Dalton DS - 1923 Gibson A2 black snakehead - '83 Flatiron A5-2 - 1939 Gibson L-00 - 1936 Epiphone Deluxe - 1928 Gibson L-5 - ca. 1890s Fairbanks Senator Banjo - ca. 1923 Vega Style M tenor banjo - ca. 1920 Weymann Style 25 Mandolin-Banjo - National RM-1
Luminary night was held at the lighthouse last night and a couple from San Antonio Texas won the canoe on one five dollar ticket! They happened to be in town for the event and will make arrangements for pickup in the future. We still have to add brass stem covers and varnish it with UV marine varnish.
Charley
A bunch of stuff with four strings
Nice Charles, I would love to paddle that is some of our lovely little streams here.
THE WORLD IS A BETTER PLACE JUST FOR YOUR SMILE!
Wow, what a classy canoe. Would love to see it up close.
Adam
Lovely! Almost too nice to put in the close proximity of rocks in streams and rivers.
"To be obsessed with the destination is to remove the focus from where you are." Philip Toshio Sudo, Zen Guitar
AH!... a Wee Lassie! I build one in college from cypress... an awesome little boat to paddle! Mine floated the Chattahoochee many times and now sits on display in my mother in-law's art studio!
aka: Spencer
Silverangel Econo A #429
Soliver #001 Hand Crafted Pancake
Soliver Hand Crafted Mandolins and Mandolin Armrests
Armrests Here -- Mandolins Here
"You can never cross the ocean unless you have the courage
to lose sight of the shore, ...and also a boat with no holes in it.” -anonymous
I'm just trying to wrap my brain around the miles of glue joints . . . wow
Clark Beavans
aka: Spencer
Silverangel Econo A #429
Soliver #001 Hand Crafted Pancake
Soliver Hand Crafted Mandolins and Mandolin Armrests
Armrests Here -- Mandolins Here
"You can never cross the ocean unless you have the courage
to lose sight of the shore, ...and also a boat with no holes in it.” -anonymous
Thanks everyone for the kind words. It came in at 34 lbs. Our goal was 35.
Charley
A bunch of stuff with four strings
John Hamlett
www.hamlettinstruments.com
Finally finish this F5 inspired mandolin. Only took 3 years.
[IMG]Untitled by Gary Davis, on Flickr[/IMG]
[IMG]Untitled by Gary Davis, on Flickr[/IMG]
[IMG]Untitled by Gary Davis, on Flickr[/IMG]
A lowly Kay mandolin in need of a neck reset. I used a foam cutter to heat the dovetail pocket plus some drops of water to generate steam. I also have the heat rod that requires a larger hole to insert. I haven't used my steam setup so much since going with the heat rod method.
Old Hometown, Cabin Fever String Band
'Been practicing spraying color for my first sunburst over aluminum & getting excited over the possibilities. This one isn't gonna be your granny's same old same old old brown bass!
Granny didn’t play bass, it was Daddy who sang bass
Not all the clams are at the beach
Arrow Manouche
Arrow Jazzbo
Arrow G
Clark 2 point
Gibson F5L
Gibson A-4
Ratliff CountryBoy A
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