Any tips on sealing MDF?

[Jim Becker]

Jim - this is a new one to me. Can you tell us a bit about your experience with Z-Poxy?

I just bought some to work with, but the guitar building crowd raves about it. It's designed for grain filling as well as a thinner clear surface. It sands out nicely. It's not hugely expensive to try...available on Amazon. I have a sapele guitar body I'm going to do "first use" on with the product shortly.

[Edwin Santos]

BIN primer has worked very well for me for this purpose. If the MDF is low grade like the box stores sell, you might have to apply it, sand back, and apply it a second time. BIN sands very well and it is shellac based by the way.

[Dave Sabo]

I just bought some to work with, but the guitar building crowd raves about it. It's designed for grain filling as well as a thinner clear surface. It sands out nicely. It's not hugely expensive to try...available on Amazon. I have a sapele guitar body I'm going to do "first use" on with the product shortly.

Which z-poxy are you refering to ? They have about 4-5 different kinds.

[Jim Becker]

Here's the one I purchased for my shop...

https://smile.amazon.com/gp/product/...?ie=UTF8&psc=1