Hello again all. Thank you to everyone who left all the great suggestions. Yes. I will be grinding them up or filing it off into dusty particles. I had planned to use liquid and create bits of dried mud or maybe a light layered effect. I may try using them dry on the next piece I experiment with. I purchased chalk pastels. In case anyone that reads this is curious where I purchased them, I got them at JoAnns fabric and crafts. They were very inexpensive compared to the other set I found at Michaels. (The set at Michaels was earth tones only but was about 2.5 times more expensive.) We have only one true art store in our town and they charge three times the going rate for comparable items. (I guess ya gotta stay in business somehow.) Anyway the box has 48 colors in it. While many aren't good colors for weathering I'll probably toy around with them on some watercolor paper. Anyway, I'm currently priming a mini that will serve as my test subject. I'll post my results on another thread when it's done. Thank you again to everyone for your input. TJ