Quote Originally Posted by geoffro View Post
Oh. Add that to the failure list. I knew they were different but given it is a thinning agent I figured it would be ok.
Yeah, that will generally end badly. Oil based polyurethane need (as well as boiled linseed oil) need to be thinned with turps (mineral turpentine). Mixing poly with methylated spirits will make it go cloudy and it may even get gluggy.