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Question on adhesives

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Blog entry by Brian Havens posted 1057 days ago 1134 reads 0 times favorited 3 comments Add to Favorites Watch

Two questions for the woodworkers who are also chemists:

I have some thick CA glue, so thick that I can no longer use it. Now I know that I can add acetone as a thinner to normal thick CA glue to make thin/thinner CA glue, but can I also add acetone to the thickened thick CA glue to reconstitute it? I have already tried this and have used the results on some jigs, but my concern is more whether this reconstituted CA glue will have its full strength, such that is is suitable for real projects.

In other words, can CA glue be reconstituted the way traditional nitrocellulose lacquer can be redissolved? or is it like varnish, which, once it starts to cure, will never be the same.

My second question regards gluing over Boiled Linseed Oil. I often wet-sand my turnings with boiled linseed oil, but lately I have been making composite turnings by gluing more than one turned part together. In some cases, I can glue the parts together first, and then wet sand, but often it is easier to wet sand with the boiled linseed oil before assembly. No matter how careful I am to avoid getting boiled linseed oil on the surfaces to be glued, it is unavoidable. It would be ideal if I simply did not have to worry about this and was able to glue the surfaces finished with the boiled linseed oil. Is this possible? with either CA glue or epoxy?

-- Brian Havens, Woodworker http://brianhavens.com



3 comments so far

View TopamaxSurvivor's profile

TopamaxSurvivor

14727 posts in 2310 days


#1 posted 1057 days ago

Brian, found this on the web Thin CA glue also has application in woodworking. It can be used as a fast drying, glossy finish. The use of oil (such as boiled linseed oil) may be used to control the rate at which the CA cures. here; http://en.wikipedia.org/wiki/Cyanoacrylate

-- "some old things are lovely, warm still with life ... of the forgotten men who made them." - D.H. Lawrence

View jehnavi24's profile

jehnavi24

2 posts in 914 days


#2 posted 914 days ago

PARSON is one of the leading manufacturer of high quality CA glue for wide variety of industrial assembly applications. Parfix range of cyanoacrylate adhesives are triple distilled to provide the highest industrial strength with consistent performance for every assembly applications.

View Gluroo's profile

Gluroo

7 posts in 526 days


#3 posted 523 days ago

Super Glue cannot be thinned using acetone. Acetone is what can be used to remove glue. Totally denatures the product, kills bond strength, and will cause the glue to cure almost immediately. A You can only thin thick glue using a thin glue. IE; thin mixed with thick makes medium.

Cyanoacrylate Adhesive’s are very unstable and require acids to prevent the glue from curing prematurely Whenever you add something you upset these stabilizers hence initiating the cure. Sometimes instantly, sometimes in a day or so.

Once the product “goes off” it cannot be re-constituted.

Any kind of oil on surfaces to be bonded is a no-no. Basic bonding instructions. Apply glue to clean dry surfaces. Remove any oil, dust, dirt.

Parson’s glue is from China.

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