How to fill in seams between attached white Thermofoil cabinets?

by Lucy

I have 3 white thermofoil base cabinets stacked together as a bathroom vanity and I think they would look so much better if I couldn’t see the seams. I intend to paint the cabinets and would love to fill in the seams. Tried wood filler, it didn’t stick. Any suggestions? Thanks

  5 answers