CA finish bubbling?

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sandking

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I was looking at a pen I did a couple of weeks ago with a CA finish. In a couple of spots it looks like the CA finish is seperating from the wood. There are a couple of small circles about the size of a pin head that look like there are going to grow bigger.

Anyone else have this issue?
 
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I did use DNA to clean the blank before using CA. I don't know what kind of wood it was, but I posted it here and most felt it was either Walnut, Wenge or Mahogany.
 
Last night I did an experiment and took some pictures for you folks to see.

I decided to use my fingernail and scratch the CA finish. The first scratch seemed to break the bond between the wood and the finish. Subsequent scratches ended up removing the finish and getting down to bare wood.

My question is do you think it was to thin of a finish? I thought the CA finish was one of the most durable finishes, maybe I just did it wrong on this pen but I did give a few away for Christmas and now I'm worried.

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DNA didn't evaporate before you applied your CA. Looks like you didn't had a good bond. Had the same things happen to me before.

I don't use DNA to clean my barrel now, switched to CA accelerator instead and no problem since.
 
I guess it was probably the DNA. But how come it took a month to get like this? I figured all this would have happened right away.
 
I would consider eliminating the DNA from your process. Compressed air does as good or better in cleaning the blank before appplying a finish. DNA adds the potential for problems due to the fact that it has a lot of chemical "junk" added to it to make it unfit for human consumption. There is no recipe, so each manufacturer wings it. There are other reasons not to use DNA which are better explained on Russ Fairfield's and Michael Dresdner's websites.
 
Skye, that is entirely possible but a lot less likely to get contamination than DNA IMO. I don't think tool oil will be a problem if you add oil at the tool. And an airgun doesn't require oil. If you add it somewhere in the line, then yes. A lot of people who spray finishes use a seperate air hose that never gets used with tools that require oil to avoid that problem. As for the moisture, you should always have a moisture filter in your line. Moisture could be a problem in the more humid areas. But that can be controlled with better or additional moisture filters.
 
I know the little compressor my folks have uses oil at the compressor, not just at the tool. I've got no idea how a compressor works, but I would assume that there's a piston compressing, that piston is lubricated, lube + air = dirty air. Again, no idea if that's how it goes down, but I would have to think it's somewhat close.
 
Not sure about oil coming out of it sky. But moist air can I believe. I know when I drain the air from the tanks it will blow out some water. I can look next time to see if there is any "oil" on top of the water.
 
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