white glue causing warpage?

Re: white glue causing warpage?

john lucas

It may move back down after a day or so when the moisture in the wood dries out. Don't know for sure. I use epoxy a lot. It's very easy to clean up while it's still wet using alcohol.

I didn't know...

GaryG in MD

that wet epoxy can be cleaned with alcohol. Good to know.

I won't be using water-based glue for this again in the future. There's no way to clamp the ends, so you get whatever happens, and it's not a good thing.

I doubt the wood can relax into place because it's now glued where it is by the residue under it. I really don't like using filler, but I may have to consider it.

...GG

3D caul?

John K Jordan

>>>There's no way to clamp the ends, so you get whatever happens, and it's not a good thing.

I haven't tried making one of these gizmos but I can imagine making a caul for each side, shaped so padded areas could apply pressure to the ends, held with clamps.

JKJ

Re: 3D caul?

Stuart Johnson

Hot glue formed blocks on the end and use rubber bands to clamp.

Re: white glue causing warpage? *LINK*

Jim Barbour

I have used Nexabond with success on thin joints. It does not involve water so the warpage is minimal, if at all, and is due to stress relief, not moisture. The product was developed by Bioformix and subsequently sold to DAP (Dicks-Armstrong-Pontius). They now market the same product as DAP RapidFuse Wood Adhesive. I have found it to have many of the characteristics of medium to thick normal CA, but generally superior, without the need for water or other accelerant.

I've put a link to an article in Woodworker's Journal that is, like many, part information, part ad. Has anyone else had success, or failure, with this product in joining thin pieces?

Of course if it is a particularly difficult joint, epoxy is the go-to, as always.


Woodwork's Journal on DAP RapidFuse

I suspect...

david

That you did not get the mating surfaces flat. After being inspired by Peter Rand's beautiful objects, I made several from about 1" to 5" in size. It has been a while, and I think I used white glue and quick clamps with those rubber pads. The pads are great for clamping the round high points--just enough give that keeps the pieces in place as pressure is applied.

Re: white glue causing warpage?

Chuck Engstrom

That article addresses Gary's issue directly:

"If you’ve ever had a glue joint swell up, due to the water content in yellow glue, you’ll appreciate that RapidFuse contains no water or other solvents. Consequently, it won’t swell biscuits or dowels inside wood joints, and joints won’t shrink later when the water in water-based glues would otherwise evaporate."

Let us know where you find it, Gary. I do wonder a little if this product carries the CA taint of becoming brittle after time to the point of breakage.

Re: white glue causing warpage?

Jim Barbour

Woodworker's Supply, Woodcraft, Klingspor, Amazon, Grainger, and I am sure others carry it. I have bought it as Nexabond at Klingspor's before it was sold to DAP.

John...

GaryG in MD

I understand what you're saying, and that's a possible approach, but it would probably take longer to make a mold for the ends (and there are four of them!!)than to turn the whole piece. No more water. Next time, I'm going to use 15-minute epoxy and just be careful with how much I use so I don't get much pressed out. ...GG

Stuart...

GaryG in MD

Too much trouble and probably still wouldn't work. There are four such "corners" on the piece. The shape is a very odd, asymmetric one at the joint, with a thin, narrow neck being glued to a much larger piece. For me, the simple answer will be to use 15-minute epoxy. ...GG

David...

GaryG in MD

The two pieces were quite flat and fit together very well before I added the glue.

While adjusting the rubber bands I used to hold the two bodies together, I could almost watch the little ends curling up. Epoxy next time for me. ...GG

Jim and Chuck...

GaryG in MD

Thanks for your comments.

My concern, as noted by Chuck, would be long term stability of the glue.

I won't use CA for anything like this because I don't want it falling apart after a few years. The Smithsonian has a prohibition on the use of CA for wood joints because some pieces in their collection have fallen apart.

I'm perfectly comfortable with 15-minute epoxy, but I just thought it would be easier to deal with the water-based squeeze out. Never again! Lesson learned.

...GG

Wipe epoxy with alcohol

John C Lucas

As I mentioned above its very easy and ecfective. I'm been using this method to clean up squeeze out when gluing my mirror handles for 20 years. I've used that technique any time I have to glue with epoxy and get squeeze out. I quit using Gorilla glue because of the mess and switched to epoxy for anything that needed to be water proof. After that I use epoxy more and more for many glue ups. Once I learned to clean it up with alcohol it's even more useful

Thanks, John,

GaryG in MD

This is really good to know. ...GG

Re: John...

John K Jordan

>>>it would probably take longer to make a mold for the ends

I never envisioned making a mold but something to apply extra pressure only on the ends. I would have cut shapes on the bandsaw but the hot melt glue blocks idea might be quicker.

However, epoxy sounds better, I use it a lot.

I'm a little wary of Nexabond - I bought a bottle but unlike CA it solidified unopened.

JKJ

Re: white glue causing warpage?  A bit OT

Dennis in Southern Oregon

Gary, can you point me to info on turning the Femisphere? Thanks.

sure, Dennis...

GaryG in MD

There are quite a few videos for simple femispheres on YouTube that you can access with a Google search, but here are three, picked more or less at random, that provide some variations in shapes and coloring:

https://www.youtube.com/watch?v=2meaO7Xb3lQ

https://www.youtube.com/watch?v=kSrK-XXjib4

https://www.youtube.com/watch?v=qLSY1Nk9wg8

I like the idea of making it into a box, a la Hans Weissflog, and it's very doable, but the process for that is much different -- more complex and detailed, as is making any box.

Have fun with it, and let's see your results, GG