I've been using Unibond 800 in small batches (4 ounces or so) for
lamination work. Mixing by hand in a plastic cup with a wooden stick
(tongue depressor) has been sufficient. This morning, I had occasion to
mix a much larger batch - 20 ounces. It seems like mixing a batch this
large by hand is a bad idea. I worked at it for a good 10 minutes, but
there were still a lot of lumps of the catalyst in the glue. When I
rolled the glue out, those lumps crushed out and became really obvious
as white slotches in the brownish glue. I hope it doesn't affect this
Maybe mixing in smaller batches is a good idea. But is there a
reasonable way to mix a large batch and not have this happen?
You can also modify the wire whisk so you can chuck it in an electric
drill. OK, I confess, I'm too cheap to buy a mixer and DO use this in the
Art commented about mixing Unibond in large batches:
We use it a bunch at work and I've had the same problem. What I do
now is put all of the powder and about 1/3 of the liquid into the
mixing cup and stir it until it's nice and creamy. Then I add the
rest of the liquid and stir it until mixed. I've found that to be the
quickest and easiest way for me.
We're actually using a new product now that uses water as a catalyst
(?). It smells a whole lot better and the results are seemingly
identical. I can't think of the brand name right now. Wait - it's
PPR and it's a precatalyzed powder urea resin adhesive. It says that
water is needed to reconstitute the powder resin. IAE, I haven't done
any research as to which is "better", but I prefer the PPR thus far.
On Thu, 09 Aug 2007 15:02:58 -0700, Jay Pique wrote:
OK ... so its able to dissolve the catalyst at that high concentration.
Good to know.
I have some of that, too. I haven't tried it yet. Should have used it on
this project. But I have half a gallon of the Unibond yet, and it
doesn't have an infinite shelf life.
More than the smell, I find the UF bothers my eyes a little, even with
fair ventilation. I use a respirator. SWMBO can't stand to be in the
shop when I'm using it, even when she has her respirator on.
Chucked up a 1 gal Jiffy in a 3/8" variable speed drill, then added a foot
switch and a wooden bracket screwed into a wall.
Now have a foot operated mixer that works just like a milk shake mixer.
Mixed up over 400 gallons of epoxy to build a boat with it.
HomeOwnersHub.com is a website for homeowners and building and maintenance pros. It is not affiliated with any of the manufacturers or service providers discussed here.
All logos and trade names are the property of their respective owners.