Crappy Wood???
I have the shirt. I still don't
really understand the underlying concept... Before you can accurately/adequately apply the idea, you need a definition of the terms.
As a working antique dealer I understand that "one man's (or woman's) trash is another man (or woman's) treasure." It would seem that the two ideas are contradictory, BUT...
(IMHO) One has to consider the outcome, not the starting place.
A while ago, someone commented on the fact that I always use really nice wood. I heard it in a way that made me wonder if my turning was any good or if it was just the materials that I was working with that drew attention, SO, I turned several pieces of wood that I would normally either use for making jamb chucks, sell or burn, so that I could get a better look at my skills...
Someone told me to paint a piece black and THEN look at the shape, if it looks good in a solid, it is probably a nice form. That's one part of my decision making process. I found that by turning the "plain" wood I could improve my skills, and make an attractive form.
I also take into consideration how compromised the wood is and/or how it is "compromised." I don't want to do anything dangerous, but I don't mind trying to overcome "issues" if the wood has potential, on it's own.
Most painters use the same basic materials in their art/craft, it's difficult to assert that it is the materials that are the main part of a good painting... I think the minds, eyes and hands of the artist make that determination. In the same way, I think that wood, "good" or "bad," figured or "plain" is not ultimately the deciding factor in whether a piece of work is common or unsurpassed.
SO, "crappy wood" is in the eye of the beholder.
Edric Florence, for instance uses log sections that are rotted in the center. I think his work is outstanding. He looks at "crappy wood" that most of us would not bend over to pick up and makes delightful turnings. There are many others, he was the first to come to mind...
So, I guess the first thing is to define the terms for yourself, then take on the challenge, whatever it is. Whether it's "plain" wood that needs a perfect form and finish to stand out or punky wood that needs to be handled with care. Whatever one sees that makes us mount it on the lathe, that wood (IMHO) isn't "crappy."