Reply to "Lionel RW 110 Watt transformer - is it known to buzz?"

I tried saturating a layered ZW core in epoxy a while ago with little success but that doesn’t mean it can’t be done. I’m not a big fan of wedging pieces of wood/cardboard/plastic into transformer cores but in the case of the RW and ended up with 3 layers of cardboard and it made it pretty quiet. Postwar American flyer transformers all used small hardwood wedges from the factory but their cores were designed differently.