Hi Vid,
thank you for this very helpful thread . I'm restoring a TZ. The mini playfield has some planking and with a friend we are trying to save it. He put down 3 coats of 2K clear with sanding between coats. The last one was done more than a month ago. At first it looked like glass but after a while you could see the outlines of the inserts and the pits where the planking was. After a month of waiting I wet sanded it and buffed it to a mirror shine, it looked beautiful. Sadly now they are starting to show again, looks like the wood is still absorbing the clear. Is this normal? How long should I wait before attempting another wet sand and buffing? Here a picture that shows where the clear has sunk inside the planking again. Thank you