Main Discussion Area > English Warbow
Quad lam - 4 laminations - Why not more?
adb:
I don't think so. The amount of glue left in the glue joint would be negligible. With TB3, the bonding action takes place at the molecular level. A good glue line shouldn't be a line at all... it should just look like the two (or three) pieces of wood are touching each other.
Thesquirrelslinger:
here is the reasoning I followed-
if you have a glue line, with a 2% likelyhoood of failure... and you add another to make a trilam... you double the possibility- 4%. If you add another- 6%... I don't think I have ever seen a properly prepared glue-line fail on here though...
adb:
The surrounding wood will fail before a properly made glue line.
bow101:
--- Quote from: Thesquirrelslinger on August 13, 2013, 01:19:40 pm ---here is the reasoning I followed-
if you have a glue line, with a 2% likelyhoood of failure... and you add another to make a trilam... you double the possibility- 4%. If you add another- 6%... I don't think I have ever seen a properly prepared glue-line fail on here though...
--- End quote ---
I agree 100% ~~~~~ a properly prepared glue-line should never fail, but sometimes haste makes for mistakes that's what happended on my last build. I glued up a tri lam, totally sloppy glue job, sure as crap it broke in the most likely spot......A Big Glue Gap...!
mikekeswick:
Lesson learnt. Never rush preparing laminations! Rehearse your glue-up without the glue if you aren't confident.
Squirrel - have you done any study on probabilities? Are you sure you end up with a 6% chance of gluelines failing.....
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