Hi Ross,

Be aware if that syringes are coated with a silicon type lubricant. I had the problem a few years ago using car paint. I had wonderful fisheyes. I addition you may spoil the entire container.

I use these days either a small scale (fleamarket) or I have some graduated cylinders for accurate measurements.

Hope this helps.

Andreas

: A couple weeks ago I posted that I had won an ebay auction for some military
: surplus camo-grey 2-part polyurethane paint. I had a chance to mix a small
: batch and try it on a scrap left over from a glassed bulkhead. Here's the
: result: The scrap was sanded smooth on one side, and unsanded on the other
: (just the wet-out coat, weave still showing). The label on the can said
: self-priming, so I thought I try it on bare epoxy.

: I used the straw technique to meter a small batch (thanks to whoever
: suggested that once). I lifted the respirator off my face to see if the
: stuff was horrible, and it was. (Definitely a out-in-the-garage paint) I
: didn't use any type of thinner - I have no clue what the recommended
: thinner would be. I quickly brushed half of both sides of the sample scrap
: and rushed it an the mixing cup out to the garage to dry.

: A couple hours later I went back out to check on it, and it was completely
: dry - there was a small run along the edge which I could dent with my
: thumbnail, but otherwise it was dry. I tried scratching it at the paint
: boundary, but this stuff was tenacious and I couldn't scrape anything off.
: It adhered very well to both surfaces, which was encouraging because I
: might use it on the interior of the cockpit area (and it's difficult to
: sand in there now).

: On the textured face, the paint completely covered with the single coat. On
: the smooth side, there are brush marks that are thin and I can just see
: the wood color showing through. Using a roller and applying 2 coats ought
: to provide a total coverage easily.

: Couple of questions: 1. What's a good way to meter a 3-4 oz batch? Working
: with a gallon can is a difficult, and the best I could come up with is
: either use a couple of syringes or a couple small measuring cups to
: dip-in.

: 2. From what I've described, is this pretty typical of 2-part paints? This is
: my first experience.

: 3. I don't know if a thinner will be necessary - it seemed to apply fine
: without it. But, what's the chances of another mfgr's 2-part thinner being
: compatible (e.g., Interlux brushing thinner - 233N?)

: 4. From what I've read in Interlux's painting guide (does anyone else think
: this booklet is scattered and disorganized?), I can't apply 2-part paint
: over 1-part. But, I think I can apply 1-part over 2-part, right?

: Thanks in advance,

: Ross