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Dictionary needed....

Started by mrcaptainbob, May 04, 2010, 11:41:48 PM

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bandmiller2

Allen,sounds like what you call a flitch we call a slab,usally a waste product.When we talk of a cant think of a timber to be sliced into boards or dimention,or simply a log with all the bark cut off.Allen you were talking of getting an oxy outfit to braze on your carbide bits,the big expense is the bottle lease/rental.For a light user those small medical oxy tanks and plumbers "B" acetelyn tanks work well and you just exchange them when empty.Frank C.
A man armed with common sense is packing a big piece

r.man

I have seen small hand torches, the flaming tool not the battery powered light, that are rated for brazing. The fuel used was not propane but I can't remember what it was called. For someone who only needed to braze the occasional thing it would be an inexpensive option.
Life is too short or my list is too long, not sure which. Dec 2014

bandmiller2

R,what your thinking of is mapp gas,its a mix of acet. and propane.wile hot enough it would likely take too long to heat the bits you want quick in and out.Frank C.
A man armed with common sense is packing a big piece

west penn

       

A good book to read is    Understanding Wood  by Bruce Hoadley   Lots of info about sawing, drying, and woodworking and stresses etc. dealing with wood.  Amazon.com has used for 16.00

Don_Papenburg

Captan_crunch , I have always thought that  pith was the very center of the log . (the first years maybe no more than ten rings )    every thing that surrounds that would be early wood or heart wood  except for the lighter colored wood just under the bark . That is called the sapwood .     Some places call slabwood (usualy big box lumber yards) 2x4 studs.
Frick saw mill  '58   820 John Deere power. Diamond T trucks

Tom

The pith is that dark line that runs through the center of the log at "ring 0"  when a tree grows, it is like dipping a candle in hot wax and layer after layer of meristem is layed down.  The lateral meristem on the side of the tree that adds to the girth lies just beneath the bark and is called cambium.  The meristem at the tip of the tree or limb is what adds height.  It is called the apical meristem (growing bud).  As it lays its layers down, that line is left in the center of the tree.  It is very weak and sometimes, over a period of time, separates.  The three to five rings, sometimes more, that are laid down beside the pith are not strong either and are referred to as immature wood.

Heart wood may not exist for years and sometimes not at all.  Heartwood is the sapwood that has died and become progressively impermeable to fluids. Heartwood is the strength of the tree, offering it rigidity.

Heartwood is usually darker in color than the sapwood.  Sapwood is the layer of wood that lies between the heartwood and the cambium layer.  Cambium produces the sapwood and the sapwood turns to heartwood as it dies and the food and water carrying vessels close.  The Sapwood is what carries the nutrients to the top of the tree.

The cambium is the living and regenerative part of the tree.  It is a thin layer lying just beneath the bark that produces bark on one side and sapwood on the other.  Since the tree grows by laying down layer upon layer, those cells never move.  That is why a nail placed at eye level will be found at that same level years later, even though the tree may have overgrown it and encapsulated it in the body of the tree.

Roots have apical meristem too.  They aren't pushed through the soil like you would push a stick, but are showing apparent movement because they are adding new growth to their tips, much the same as the tree above them.

Earlywood and Latewood, sometimes called summer wood and winter wood, are created because the lateral meristem produces different densities of cells when in the growing period or in dormancy.  The quick growth in the spring creates the wide, lighter colored Early wood (spring wood) while the slowing of the growth in the late summer or fall creates the darker colored and more dense Late wood ( summer wood or winter wood).  Since this usually happens dependent upon seasons, a combination of the early wood and late wood is known as an annular growth ring and used to identify the age of the tree.   

Trees can lay down false rings if there are extreme weather changes, so special training is needed to identify the true age of a tree.  Cypress is notorious for appearing to be older than it really is, because it frequently creates false rings.

This study of Tree growth and aging is a large part of the knowledge one must have to become a Dendrologist.

sigidi

Quote from: Tom on May 09, 2010, 12:58:24 AM
The pith is that dark line that runs through the center of the log at "ring 0"  when a tree grows, it is like dipping a candle in hot wax and layer after layer of meristem is layed down.  The lateral meristem on the side of the tree that adds to the girth lies just beneath the bark and is called cambium.  The meristem at the tip of the tree or limb is what adds height.  It is called the apical meristem (growing bud).  As it lays its layers down, that line is left in the center of the tree.  It is very weak and sometimes, over a period of time, separates.  The three to five rings, sometimes more, that are laid down beside the pith are not strong either and are referred to as immature wood.

Heart wood may not exist for years and sometimes not at all.  Heartwood is the sapwood that has died and become progressively impermeable to fluids. Heartwood is the strength of the tree, offering it rigidity.

Heartwood is usually darker in color than the sapwood.  Sapwood is the layer of wood that lies between the heartwood and the cambium layer.  Cambium produces the sapwood and the sapwood turns to heartwood as it dies and the food and water carrying vessels close.  The Sapwood is what carries the nutrients to the top of the tree.

The cambium is the living and regenerative part of the tree.  It is a thin layer lying just beneath the bark that produces bark on one side and sapwood on the other.  Since the tree grows by laying down layer upon layer, those cells never move.  That is why a nail placed at eye level will be found at that same level years later, even though the tree may have overgrown it and encapsulated it in the body of the tree.

Roots have apical meristem too.  They aren't pushed through the soil like you would push a stick, but are showing apparent movement because they are adding new growth to their tips, much the same as the tree above them.

GO TOM!!!! 8) ;D 8)

Frank C, we call a slab a piece of timber cut horizontally straight through, from bark to bark, so it would have two sawn faces and two natural edges  ;D
Always willing to help - Allan

MFinity

Seems to me the more ordinary but still, most useful, tools should get the attention they deserve, so herewith, some definitions of basic tools that many of us are likely to find around the shop:

A few of my favorites:

HAMMER: Originally employed as a weapon of war, the hammer nowadays is used as a kind of divining rod to locate the most expensive parts not far from the object we are trying to hit.
EIGHT-FOOT LONG DOUGLAS FIR 2X4: Used for levering an automobile upward off of a trapped hydraulic jack handle.
PHILLIPS SCREWDRIVER: Normally used to stab the vacuum seals under lids and for opening old-style paper-and-tin oil cans and splashing oil on your shirt; but can also be used, as the name implies, to strip out Phillips screw heads.
DRILL PRESS: A tall upright machine useful for suddenly snatching flat metal bar stock out of your hands so that it smacks you in the chest and flings your beer across the room, splattering it against that freshly-stained heirloom piece you were drying.
PLIERS: Used to round off bolt heads. Sometimes used in the creation of blood-blisters.
HACKSAW: One of a family of cutting tools built on the Ouija board principle. It transforms human energy into a crooked, unpredictable motion, and the more you attempt to influence its course, the more dismal your future becomes.
EXPLETIVE: A balm, also referred to as mechanic's lube, usually applied verbally in hindsight, which somehow eases those pains and indignities following our every deficiency in foresight.
;D

Jeff

Quote from: mrcaptainbob on May 04, 2010, 11:41:48 PM
I cant talk intelligently without knowing what I'm saying. Where can I find explanations for wood cutting terms...such as/but not limited to...can't, peevey, pith, etc. ....

Sorry I didn't answer in a more timely manner on this, but I've been busy. ;) :)

I let mrcaptainbob in on this a day or so early, but its ready now.
https://forestryforum.com/board/index.php/topic,43883.0.html
Just call me the midget doctor.
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Commercial circle sawmill sawyer in a past life for 25yrs.
Ezekiel 22:30

r.man

I bow down to your superior knowledge and typing. I am also amazed at the amount of work that must have gone into this dictionary. I expect to use it frequently. Thank you so much for taking the time and effort. Please thank Stacey as well for her effort on our behalf. 
Life is too short or my list is too long, not sure which. Dec 2014

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