More CA stuff!

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Woodchipper

Woodchipper

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A lot of time has been devoted to cyanoacrylate adhesives otherwise abbreviated as CA glue. Penturners have made the utmost use for gluing tubes into blanks and finishing. I got the wild idea of experimenting. I do this with photography and fishing. Rummaging through a drawer in the cabinet, I spotted several tubes of Harbor Freight CA glue. If I was in a cartoon, there would be a light bulb over my head. So...turn a piece of wood to round and try the HF CA glue. Will let you know what I find and, if things look promising, post a photo or two or three.
 
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There is not a lot of difference in the chemical formulas for CA glue. But there does have to be some difference or they would impinge on the copyright.
 
But again remember many factors go into using brands. Temps of shop, age of glue, climate being applied the use of accelerator between coats ( I do not use it), is that product compatible with the CA , how much used and distance spraying , are you using spray or pump. So many questions goes into the CA questions. It is not simple as go try HF glue.
 
PreacherJon said:
There is not a lot of difference in the chemical formulas for CA glue. But there does have to be some difference or they would impinge on the copyright.
Click to expand...

There are around five different formulas, each very different. From there, we have tons of labels for each formula. If you compare the labels inside each formulation, then your statement is correct. If you compare formula A to B, then no, your statement is not correct..

For example.

methoxyethyl C6H7NO2 vs. Ethyl cyanoacrylate C3H7O

jttheclockman said:
But again remember many factors go into using brands. Temps of shop, age of glue, climate being applied the use of accelerator between coats ( I do not use it), is that product compatible with the CA , how much used and distance spraying , are you using spray or pump. So many questions goes into the CA questions. It is not simple as go try HF glue.
Click to expand...


To be more technical, it's all about the PH level of the glue, more specifically, the rate of change of the pH levels. That is what dramatically affects the polymerization process.
 
edstreet said:
There are around five different formulas, each very different. From there, we have tons of labels for each formula. If you compare the labels inside each formulation, then your statement is correct. If you compare formula A to B, then no, your statement is not correct..

For example.

methoxyethyl C6H7NO2 vs. Ethyl cyanoacrylate C3H7O




To be more technical, it's all about the PH level of the glue, more specifically, the rate of change of the pH levels. That is what dramatically affects the polymerization process.
Click to expand...
I know you did more studies on this stuff and can answer technical questions better than I. I just mention some of the things we read here all the time and breaks it down in hopefully simple terms as we learn how to use CA.
 
You also have the so called oily glues like Tree Frog which they make all sorts of wonderful claims for, including stronger than CA and does not glue skin, sounds ideal doesn't it. Trouble is the few different bottles I have tried have all appeared to be just stock CA.
 
PreacherJon said:
There is not a lot of difference in the chemical formulas for CA glue. But there does have to be some difference or they would impinge on the copyright.
Click to expand...
Two points here:

First, the issue is 'patent', not 'copyright'. Copyright pertains to ideas generally expressed as a piece of creative work (ie, a written document, a piece of music, a painting or a photograph, etc). Patent pertains to inventions.

Second, I did a very abbreviated web search, and the only reference I could find to a patent for a CA adhesive had an effective date of 1972, and was listed as 'expired' - that is, the ownership rights of the original inventor had expired and the formula is now in the public domain meaning that anyone can whip up a batch with no adverse legal consequences. And the fact that there are so many commercial variations on CA suggests to me that the basic concept is no longer protected. That is not necessarily true of all CA adhesives, and a specific brand may have a more recent patent date and therefore still be protected. For example, someone could have taken an old formulation, added a pinch of nutmeg, and filed a new patent that is still valid.

But I'm not a lawyer, so what do I know - - -
 
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