Join Date: Jun 2003
Location: New Lenox, IL-USA
Re: Jem crack neck lock allen screws
My poor, poor, panix,
OK, if we really have to do this, but I can assure you that your intuition AND Wikipedia are no match for real world experience.
CA is NOT used in production work for many reasons including it's cost, it's highly flammable nature, the fact that it's a known carcinogen, AND it's gasses can be toxic in quantities. Wood glue possesses none of these problems. They typically are a skin and eye irritant only.
I don't know who wrote the wiki article but they're dead wrong about nearly every aspect of the CA subsection. You DO know that anyone can write a wiki article, right?
- wicking (thin) CA wicks INTO the wood grain- not out. ALL glues will wick into wood, the thinner the glue- the deeper it will wick. A deeper wicking action will cause a significantly stronger bond. Because of the grain structure of the wood (open, heavily tangled straws) the CA runs through these "straws" and fills them. When the CA cures, it locks these "straws" across the break and deep into the still strong fibers on either side of the crack. Imagine a million strap ties bridging the gap of the crack and rooting deep into the still viable material on either side.
Gel type CA's are NOT good adhesives to use on wood joints because the DO NOT WICK deeply at all. Gel type CA's are typically thicker than most wood glues.
Christ, as I'm typing this I'm realizing how stupid it is to reply. I CANNOT teach you 30 years worth of professional woodworking experience in a couple of posts. There are variables in everything- woodworking being no exception. You either know which glues are appropriate in any given situation, or you don't. If you want to go on thinking that EVERY woodworker and EVERY luthier has it wrong simply because your intuition tells you such......then enjoy your misconception for as long as possible. Meantime, I'll go on using that which has been tried and tested over the last several thousand years by those that DID, not those that "Thought it should".