On the subject of home brew walnut stain. Can someone tell me why some batches will mold and other can sit right in the same place in separate container and not mold?
If I knew why maybe I could prevent any of it from molding.
Example there is a five gallon bucket that started out over half full when I poured it off last spring sitting in my shop, most is evaporated now but it has no mold whatsoever and some other I put in the pot I was using to dye projects is molding now, can sit it out in the sun and kill the mold. Clean and screen it but bring it back inside and after a week gets mold growing on it again.
I'm going to use this that is not molding for the next staining and see if it starts molding, I wonder if it is a combination of additional tannic acids from the vegetable tanned leather after the batch has been used or coincidence, not sure.
I believe Mr Chuck Burrows mentioned one time either on a forum or to me personally during a discussion that he would put some alcohol in his when not in use to prevent mold. I tried that on this particular batch and it still molded.