Well I called a bunch of stores to get different opinions about framing 6 x 6's and got mostly different opinions about it.
None of them make frames that will fit 6x6 artwork, except for what Sunny found in IKEA. I would imagine though that most people would probably want a more quality frame rather than just save money. It appears they just have white ones. Maybe black too, but I couldn't see that they do.
I also called Lowes and talked to someone that seems quite knowledgeable and sensible about the problem, so today I went there and talked with him about it. I can't tell you the whole conversation here because we were talking about it for close to an hour. He had experience with the same thing, only different. Even though he showed me how I can make the frames, he made the point that it really wouldn't be worth the time because people would rather pick out their own frames. Also pointing out that any good buyer isn't going to worry about the price of a frame if they like the artwork.
He said, and showed me pictures of aerial photography he did for twenty years and him and the people he worked with, provided frames for the photos sold to the public and found that people wanted them without frames. They wanted to pick out their own.
Anyway he started off the conversation saying "I'll show you how to make frames and then I'll tell you why you shouldn't".
The biggest reason being that you have to ask yourself...do you want to be an artist or a framer? That made perfect sense to me, realizing that I wouldn't have time to do both, concidering all the time it takes to do everything else business related.
So to make a long story short, I opted out of the idea of making frames. So I'm just going to make my paintings and let the buyers take it from there.
Anyway, all I wanted to do in the first place was answer a customers' question about how to get a frame for a 6x6.
I think I'll just recommend the places that Carol Maine and others recommend and be done with it.
Maybe someday the retailers will realize that 6x6 in. paintings are getting more popular and start making them standard sizes. Who knows.