Polycryl
A wood fortifier.This a concentrated, low molecular weight polymer that will fill and strengthen soft, punky or spalted wood. It will dry clear and will not yellow.Polycrylis water-solubleand can brushed on or wood can be soaked in aPolycryl.For additional information on using Polycrylsee the FAQ page. https://preservation-solutions.com/pages/wood-treatment-faqs