LumberJocks

GLUE UPS For small unclampable pieces

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Blog entry by Randolph Torres posted 986 days ago 3701 reads 0 times favorited 5 comments Add to Favorites Watch

Necessity is truely the mother of invention or inovation. I uncovered a glue up process that works very well. It was developed for unclampable pieces, but could be used for other similiar needs. Place a liberal amount of regular yellow carpenters glue on both surfaces—now wait until the glue dehidrates to the point the glue will make long strings when the pieces are placed together. (the glue is darker yellow and a high viscosity) Do not let any part of the glued surfaces dry out keep both sufaces wet coated in glue smeering it around occasionally. When you can pull long strings from both surfaces, press hard and rotate the pieces to squeeze as much glue as possible for a good glue line. You will feel the piece almost pull itself to a stop from the suction at that point stop, wait the recomended time for curing, (before working the joint). Some times you will or might wait a little to long no fret just add a drop of glue from the bottle and press and rotate, this will rehydrate the dehydrated glue. But if it has dried it is too late and the glue should be removed and the surfaces repaired. Refinement—the perfect indication (time to put the joint together is) if you hold the joint at eye level and rapidly place the joint together and pull it apart several times, when it throws tiny floating threads its ready and will only take several seconds to bond.

-- another tip from cooperedpatterns



5 comments so far

View SASmith               's profile

SASmith

1543 posts in 1582 days


#1 posted 985 days ago

Thanks for the tip.
Have you ever turned a glue-up on a lathe that was glued together using this technique?
Just wondering how much weaker, if any, the joint would be.

-- Scott Smith, Southern Illinois

View Randolph Torres's profile

Randolph Torres

295 posts in 2123 days


#2 posted 985 days ago

I wouldn’t try it on a lathe you need a structurally sound glue joint for a turned piece.

-- another tip from cooperedpatterns

View Arlin Eastman's profile

Arlin Eastman

1837 posts in 1156 days


#3 posted 985 days ago

Us wood turners do it all the time with two pieces on wood.
Arlin

-- It is always the right time, to do the right thing.

View tom427cid's profile

tom427cid

294 posts in 1065 days


#4 posted 985 days ago

There is an “old fashioned” technique that still works with new glues.It is called a rub joint. I use it a lot particularly with glue blocks. Apply glue to the block when you put it in place rub it back and forth 1/4 or 1/2 inch is all that is needed. Very shortly you will feel a bond begin-it gets harder to move. All done.
tom

-- "certified sawdust maker"

View Randolph Torres's profile

Randolph Torres

295 posts in 2123 days


#5 posted 984 days ago

There it is Arlin says its tried and true. For me I would be cautious about that and mabe restrict it to small diameter pieces or lower RPM projects. I had a piece come apart on me and it tried take my nose off it was hanging and had to be stiched back on. Sounds like Toms been doing it that way for a while with out incident.

-- another tip from cooperedpatterns

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