another glue topic

[Hobbyman2]

http://www.oldbrownglue.com/images/arti ... ue_FWW.pdf


How strong is your glue

To help make sense of it all, Fine Woodworking ran a test with
three main objectives. The first was to compare six common types
of woodworking glue; the second was to see if the type of wood
might affect the bonding strength of the different glues; the third
was to determine how tolerant the glues are to poorly cut joints.
The results were revealing. Some older glues performed superbly,
while a newer glue was less than impressive
The wood type does make a difference, but don’t believe the stories that say all dense
tropical woods are hard to glue. And, while glue starvation seems
to be a myth, so does the gap-filling ability of certain glues.

Selecting glues, woods, and gaps
To see whether an open-grained wood bonds differently from a
tight-grained one, we chose white oak and hard maple. dense
tropical woods have a reputation as being difficult to glue. we intended
to use teak, but the lumberyard owner suggested ipé, as he
had heard many complaints about glue failure with this wood.

Proponents of hide glue have never claimed
that it is as strong as PVA, but instead
promote its reversibility and compatibility with
stains and finish. From this test, it appears
that hot hide glue is only a little weaker than
yellow glue and is stronger on oak.
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The article is much larger , since I have been messing around with hide glue,, making my own and all I have been doing some research on well ,,, glue lol and the woods it will work best on . by the way so far the raw hide glue I made from the dog chews has been flawless .

Years ago we used white glue for walnut, poplar,pine , and oak , now you hardly ever see white glue on the shelf .

[shipwright]

Good article however there are shades of grey in all things. Here are a couple of my observations related to the glues with which I have most experience.
Epoxy on oily woods: there are additives for epoxies and epoxies that already contain them that will dramatically change the numbers here.
Epoxy as a gap filler: again, use of the appropriate thickeners and fillers will provide gap filling far beyond the capabilities of any of the others with little or no loss of strength.
Hot hide glue strength: dry hide glue can be bought in a variety of “gram strengths”. The trade off is that the stronger the glue is the shorter the open time will be. The glue tested was Mosers, which I can find online to be available at at least two strengths, 164 gm and 251 gm.
If they were using the 251 I am surprised. If they were using the 164, not so much.
Also there are a lot of nuances to hot hide glue that will give an experienced user better results than someone who has just started using it. Notably, but not only, thickness of the glue when used.
...... but mostly like I said, good article.

[Hobbyman2]

I agree with you 100%
Like you said,,, there are a lot of variables , probably more now then there were 30 years ago .

My parents have a dining room table my great granddad made from cherry trees cut and milled from their old farm dad seems to remember it was made with rosin of some sort,,,, but was to young to remember what type. if is very old and still holding together .