In article ,
"RBK" wrote:

The edges of the MDF can suck up a lot of glue. So here's what you can do to
help that situation.
Depending on your brand of Hide Glue mix up a batch with twice as much
water.
Normal - 1 cup Ground Hide glue - 2 Cups water
Wash Coat - 1 cup Ground Hide Glue - 4 Cups Water
Apply this wash coat to the MDF and let it dry. If you are doing the edges
you may have to try this more then once. Using "real" wood as an edging
material on MDF is highly recommended over veneering the edges.

Thanks for the very valuable tip; filed away. I would generally always
lean towards solid wood edging anyway, but just-in-case that is pretty
handy to know.