Last week on EmptyEasel, I shared my method of removing an old, unfinished painting from a panel so you could re-use the panel. That’s only the first step of the process. Prepping a used Masonite or wood panel for a new painting is just as important. In most cases, you can’t just paint over it.

Acrylic paint is one of those mediums that seems to always be ready to paint over without a lot of prep work.

But what your preferred medium is oil paint? What’s the best way to prepare a used panel so you know new paint will adhere to the panel?

Prepping a Used Masonite or Wood Panel for a New Painting

I’m a frugal artist (some might say cheap), so I hate to throw art supplies away if there’s any hope at all for making further use of them. Consequently, I have more used panels in storage than I have brand new ones.

Over the years, I’ve found several things that don’t work—just painting over the old paintings with a nice, fresh layer of paint, for example. The new paint will peel off the panel, taking your new painting with it.

But I’ve also found a method that does work most the time.

And here’s a bonus! It works for breathing new life into unfinished paintings that have set around for a long time.

The process begins with an onion slice or half, and proper conditioning of the panel’s surface. It’s an easy process and well worth trying before you toss those old panels. Read all about it on EmptyEasel.