My white dope turned yellow!

Actually it worked fine for undercoats and filler. Just make sure to put a blocking coat over before going to final colors. The new clear we have had no problems with. I think it was limited to just one batch. And, as always, John will make things good (with the exception in this case of repainting the airplane). Any product can have a flawed run. Just look at how many recalls we have on cars and airplanes (why do car manufacturers have to pay the cost of the recall on cars, but with airplanes it is the owner's responsibility to update before he gets clearance to fly it again?)

As I said, we have had no problems with the new stuff and I certainlyu wouldn't knock the product because of one bad batch.

Bigiron

I am on my second all Brodak finish and so far so good.

Crist, I am still thinking it was the clear coat and the result of the one bad batch that slipped through. The color change came about after manufacture, so it was something they could not foresee. We had a gallon can of the stuff, and in its first use it was absolutely clear. It yellowed over time on the airplane. The next year, however, when Matt was about to paint his next rendition, the stuff poured out of the can looking orange. Very peculiar and John took this back to the manufacturer for analysis. If that is your problem, talk to John and he will make it good. And don't be afraid of the new stuff. Whatever it was, the problem was solved.

Could also be the mix. I had some clear that turned quite yellow. It was Randolph's dope. I put a little too much retarder in (painting on a rainy day - always a bad idea). It looked fine at first but started to yellow within a couple of days.

But Len is probably right. Just a bad batch of dope.

Throw in a couple of lines about a loaded mule getting blinded.. or something like that ???

Might be a hit

Come to the meeting sat , if the snow melts, I will give you a couple flights on the Imitation, I think you will like it alot..

William

Here's some pics.

On the first picture look along the fillet area to see the yellowing.

Come to think of it, there was a problem with the server that this forum is being hosted on. And we discovered several bugs in the software. And I had to reload the operating system on my computer. And the e-mail systemn (outside the computer) still isn't working correctly.

Len,
I did pour some in an epoxy mixing cup along with Sig clear in another. I really couldn't tell the difference between the two. I know what you are saying, but try to remember this has happened to every (4 of them) airplane I used Brodak dope on. That is why I keep thinking I'm doing something wrong. I do like the fact Brodaks is less smelly and it dries quickly. I'm re-considering Brodaks. We'll see and I'll post my results.

Len,
Yes all the same dope. I got the clear and thinne in quarts, and the white in pints? No retarder, it still is pretty dry. While I was sanding off the yellow finish, it looked like it was the clear that had turned yellow. Though I'd say some of the white was yellowed too which could have been caused by shooting the last several coats too thin. I never had a run, but came close.

The base was all Broday with 3/10 cf. Nitrate to adhere the cf, several coats, the butyrate filler, several more clear, the 2 platinnum grey, 6 white, then trim collors. 2 dry clear, then 4 wetter and thinner coats with 1/2 between each. I started to notice the yellow by now. Overnight drying, light sanding then 2 thinner and wetter coats. Overnight and a few days later the yellowing became very apparent.

Seems like quality control has long been a problem in the Hobby industry. (as well as many others)

Guys: I have had the same problems, with the same products; also other brands. I think we should look beyond this, i.e.: 'why do they call it 'clear'?' It's like the Constitution.

Scott(doing a white plane now)Riese

Best, Hoovie