Urac ?

[Mark Smeltzer]

Is it true that you cant buy Urac anymore?
Has anyone tried the Unibond 800?
Thanks

Mark

[TimothyR]

It's true.  Unibond 800 replaced it. I have some but haven't used it yet. I'm sure someone will chim in on how well it works.. I would like to know if its true that it doesn't need heat to cure.

[Eric Krewson]

I have been using Unibond, can't tell any difference between it and urac. It cures without heat, takes 7 hours at 70 degrees, an hour at 90 degrees.

[Mark Smeltzer]

Thanks guys I guess Ill give Unibvond a try. I do have some Urac left I wonder what the shelf Life really is with it.

Mark

[Pat B]

It depends on how its stored. I keep mine(Urac) in a frig and it seems to hold up pretty good. It was about 2 to 3 years old the last time I used it and that was 2 years ago. I haven't checked it lately.

[Prarie Bowyer]

Weldwood plastic wood resin.  Less expensive, easier to keep, just as strong.

[RBLusthaus]

Weldwood plastic wood resin.  Less expensive, easier to keep, just as strong.

X2

[Pat B]

I've used Weldwood Plastic Resin over the years and really like it for glue-ups. Cheap, easy to use and cleans up with water...but I heard somewhere that it has been or is being phased out.

[Roy]

Unibond 800 is good stuff..

https://www.vacupress.com/veneerglue.htm

[hedgeapple]

I've used Weldwood Plastic Resin a few times with no complaints.  But, I have a question about it?  It seems to always mix up a little gritty.  Is it supposed to be gritty?

[Pat B]

It seemed a bit gritty to me also but so did Urac.

[RBLusthaus]

yes, it mixes that way for me too.  Always works though.  I had some issues with URAC a few years back and switched to Weldwood even before it got discontinued.  Have been very happy with it and since it in powder form, if kept dry, it lasts indefinitely. 

[Pat B]

...and its cheap. When I bought some a few years ago it was about $5 or a 1# tub from ACE Hardware.

[Sidmand]

Is weldwood a gap filling glue, suitable for Ipe to bamboo?  I've been using Titebond, but there is some extra prepwork with that cause everything has to be super smooth to get a good glueline.  I'm going to look up the properties, but I'd like to hear from people who have used it - do you need to acetone the Ipe, how smooth do you really need it to be, etc?

[Pat B]

It should work well with boo/ipe. It is a gap filing glue. I toothed both surfaces and glued it up. I think fresh wood is a better 
"de-greaser" than acetone or other solvents so sand both glue surfaces, tooth them, blow off the dust and glue it up. I've used a toothing plane and hacksaw blades on the glue surfaces, both with good results.