WHAT GLUE TO USE?
PVA glue is recommended for gluing fibreboard (MDF). PVA is commonly referred to as white glue, wood glue, or Elmer’s glue in the US. The main use of PVA is as a wood glue. Cheap white glue such as school glue is not recommended. Nor is washable PVA recommended as it will resist paint.
Strong or tacky PVA is more expensive but a whole lot better.
The top tip for gluing fibreboard is to spread the glue very thinly all over both parts to be glued. Press the pieces firmly together. When the glue is very nearly dry, press firmly again. Wipe away any excess glue.
Rather than holding pieces together with rubber bands, it is recommended – also, use a quality glue – to keep checking and firmly pressing the bond.
Small clamps are more useful than rubber bands. Clamps are very useful when gluing large flat areas together.