Hi guys I'm in the process of building some drawers which will fit inside a recess (previously it was a couple of shelves). The drawers have an mdf carcass and the wall around the recess will be plasterboarded and plastered. I want the mdf carcass to be flush with the finished plaster and wondered if there's a product/idea which will create a 'divide' between the plaster and the mdf as obviously without such a solution, the mdf will soak up the plaster. I appreciate that I could have it plastered first and then slide the carcass in but presumably the plaster coat would end up being very thin around the recess opening (approx. 1m x 0.5m) and more worryingly, it would make life difficult if it was uneven as the carcass wouldn't be flush with the wall on all 4 sides. Thank you in advance for any tips/ideas.