This is a piece that I coated with penetrating epoxy a week before. Penetrating epoxy soaks in to rotten wood, but barely penetrates good wood. This wood, although water saturated and stained, was good. One problem with applying penetrating epoxy too soon is that it can hold moisture in. The piece (showing the puncture wounds made by my moisture meter) was still at 26% when some of uncoated pieces that I had torn out were already down to 18%, so I have to be very patient and let this dry out.