Tamiya Uh... We may have a problem.

Well, I just checked the achohol is still there. So, the mystery of the disappearing paint is solved thanks to the Finescale squad. :)  

Thanks to everyone for their help. 

Cdn Colin you are a genius!  I just went to run that experiment with the thinner and realized that on the two jars that evaporated the inner plastic ring was there but it wasn't all the way, causing the lid not to seal tightly.  I'm running a new experiment now that the lid is in.  I'll tell what happens to it tonight because there is very little achohol in it, whitch will evaporate very fast if the seal is bad.

Cdn Colin

Tamiya lids have 2 parts; the threaded lid itself, and a softer clear plastic liner.  Maybe you don't have the liner for some reason.  that would explain the evaporation.

 

I see what you mean.  I was talking about that little white ring that comes on tamiya products, like the glue.  What I  meant to say is there was none of those but there is that plastic inner part.

Tamiya lids have 2 parts; the threaded lid itself, and a softer clear plastic liner.  Maybe you don't have the liner for some reason.  that would explain the evaporation.

ZAT

Odd behavior. I’ve has my Tamiya paints sitting in my garage for a couple of months now and haven’t noticed and change in the amount of solvent present. Ultrasonic cleaners are interesting creatures. Did you physically look at the bottles to see if there are cracks/chips in the rim of the bottle. I’ve never looked at the paint bottles, but my thin cement has a foam seal in the cap that can come loose. Is that present in the paint bottles?

 

No I've look at the jars and they seem to have no kind of rubber or plastic seal (this is a brand new jar too).  Like I said though  it could probably just be a rare coincidence that I got two defective jars, I have got defective paint in the past.

Edwin

If you really want to get to the bottom of this:

- transfer thinner to tamiya jar, mark the level

- transfer thinner into jar of different brand, mark the level too

Seal both jars and wait few days. Compare levels in both jars. Do let us know the result, enquiring minds want to know  

 

I will try that.  I'll start tomorrow (Friday), need to find another clean jar besides the tamiya ones, and post pictures in a week, the same time it took the other one to disappear.

The glue!?  I use Tamiya liquid cement all the time.  Never had a problem with it.  You just have to make sure the lid and inner seal is on good and tight. Just hand tight is all it needs.

If you really want to get to the bottom of this:

- transfer thinner to tamiya jar, mark the level

- transfer thinner into jar of different brand, mark the level too

Seal both jars and wait few days. Compare levels in both jars. Do let us know the result, enquiring minds want to know  

Noah

BlackSheepTwoOneFour

Maybe you drank it thinking it was vodka. Who knows. Odd indeed.

I thought that batch of vodka tasted funny.

  Now that you mention it, those bottles are nicely "shot" sized.

BlackSheepTwoOneFour

Maybe you drank it thinking it was vodka. Who knows. Odd indeed.

 

I thought that batch of vodka tasted funny.

I have the same thing with my Tamiya glue. It was on sale so I bought 5 jars. I have only used one and the others are between half-full and empty. It may be that the chemicals are eating through the seal. Some of the seals on my old bottles crumble when I open them.

Maybe you drank it thinking it was vodka. Who knows. Odd indeed.

Only thing I can think of is the ultrasonic opened up pores, pitted the plastic lid,  or otherwise damaged the sealing surface on the lids (if you tossed those in too).

Try putting some foil or plastic wrap on your test jar before you put the lid on and try again.

Dang! I had like fifty lawyers ready to make some lawsuits.  Just  kidding, but I also notice that some old paints I have had for years are fine.  Maybe I just have a few defective jars.

I've been using Tamiya paints for decades.  I have never had any issues with the paint or thinner.  I don't know what is going on with your experiences.  Very odd.  But I don't think that is any thing deliberant on Tamiya's part.  Maybe others have better idea.

That is weird.  I have some usable Tamiya paint from almost 30 years ago.  Maybe it's the newer paint?  I'm not sure what he ultrasound could have done to the jars.  Maybe a physicist could help.