Re: Wood shreds... Follow-up

[P van Rijckevorsel]

John Grossbohlin schreef

> I've got a piece of pine that looks very strange so I started playing around with it.

Jointer, planer, various hand planes, cabinet scraper, scraper, sand paper.... doesn't matter, the wood peals apart. Score it across the grain with a sharp knife and the wood lifts and shreds on either side of the cut.

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I believe I found the explanation for the phenomenon described above.

Though having read a couple books on wood I picked up Hoadley's book "Understanding Wood" from a remainder vendor a few months ago... along with about 20 other titles. I finally got around to going through Hoadley's book. On page 167 in a discussion of "raised grain" were found pictures and a description that matched exactly what is described above. Seems this is the result of dull planer knives, or knives that have been excessively jointed, or too high a moisture content upon planing.

I have to wonder if such abused wood is salvageable as thinner stock??? > John + + +

This refers to the second edition of the book (was page 154 in first edition). I would not describe what is referred to there as "pealing apart", although it is bad enough. The first step to salvaging obviously would be to dry the wood? PvR

[John Grossbohlin]

Did that piece of wood ever show up? (Went out in the mail... a bit pricy!) If it did show up you would find that peeling is quite descriptive (I have to admit that pealing isn't! ;-) )You could literally peel layers off by catching a finger nail under a layer where it stood proud and pulling.

At it's heart the salvage question was about how deep the damage goes in such a case. That is, is it isolated to say the top 1/8" or does the damage pretty much go through a piece say 1/2" to 3/4" thick. The surface was so bad I didn't try going any deeper than maybe a 1/32" to 1/16"...

John