glue soup

Hi, Does anyone have the recipe for glue soup? How long does the process take?

Thanks, Kevin

Reply to
Kevin Cleary
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Hello Kevin,

If you are talking about the glue mixture to soak cracked bowls in that Wally Dickerman came up with a few years ago, it is a mixture of

50 percent white glue and 50 percent water. The soak time should be at least 24 hours in my experience. The few times I've used it the process worked great. You do have to let it dry after soaking. The first time I used it was with a 14" salad bowl that I had rough turned and was drying to give to a friend for a house warming gift. I pulled it off the shelf and it had a big crack in it. I decided to use Wally's process. It took almost two gallons of white glue and I used a rock to hold the bowl under the solution. I took it out after 24 hours and the crack was still there. I said to myself, Wally it doesn't work. I threw the bowl out on the woodpile in the rain. A few days later, I picked it up and the crack was closed. Brought it in and let it dry off for a couple of weeks and final turned it. That was about five years ago and she is still using the bowl with no crack.

Fred Holder

Reply to
Fred Holder

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"Wood is dimensionally stable when the moisture content is greater than the fiber saturation point. Wood changes dimension as it gains or loses moisture below that point. It shrinks when losing moisture from the cell walls and swells when gaining moisture in the cell walls. This shrinking and swelling can result in warping, checking, splitting, and loosening of tool handles, gaps in strip flooring, or performance problems that detract from the usefulness of the wood product. Therefore, it is important that these phenomena be understood and considered when they can affect a product in which wood is used." Soaking, or throwing wood outdoors in the rain will reexpand it as it comes back up to the FSP, and the water-soluble glue acts as "bulking" agent as it polymerizes, to preserve the shape. Also acts, presumably, as a glue to readhere cracks, which is a plus. Will change the finish aBsorption characteristics of the wood as it diminishes the aDsorption which goes with water uptake and release. PEG, another bulking agent, will do the same, but at the cost of making the piece almost unfinishable.

Best be a magnificent piece before I'd contemplate resoaking. Results aren't guaranteed beyond minor surface checks.

Reply to
George

I'd be worried about trying to glue a crack with diluted glue and no clamping..

Maybe I'm paranoid, but I always clamp a cracked bowl..

mac

Please remove splinters before emailing

Reply to
mac davis

You can't apply as much clamping pressure as the wood can. Remember how they split the granite out of the quarry with wooden wedges and water?

Reply to
George

Reply to
Kevin Cleary

Not sure there's a whale of a lot of difference. PVA is the glue, regardless.

Reply to
George

Reply to
Kevin Cleary

I guess.. I still don't think I'll be soaking any bowls, though..

mac

Please remove splinters before emailing

Reply to
mac davis

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