Plywood is mostly made directly with wood veneers by binding and pressing large number of sheets together as per the thickness of the product required. Plywood comes in various sizes and thicknesses and in various grades like MR, BWP etc.

Even calibrated ply is available especially for kitchens and designer furniture. Ply is made up of mostly eucalyptus, rubber, poplar, birch, oak, maple and sometimes teak veneers as well.

Have you heard about engineered wood composite that’s what particle board and MDF are, the main difference is that MDF is denser, quite heavier and stronger than regular particle board available in market. There is one more type, Heavy density fibre board that is called HDF, which is even stronger and heavier than MDF.

As the word suggests engineered wood it’s actually engineered from the sawdust, huge amount of sawdust is collected and mixed with right quality and quantity of binder glue and then pressed and dried at high temperature in to rectangular sheets.

The visible difference between MDF and particle board is that there are no voids visible in MDF cross section but in particle board one can see rough structure and lots of voids that’s why particle boards are lighter than MDF.

Thus ideally there is no actual wood either in particle board or fibre board.

In market you will get various sizes of MDF sheets like 4×8, 4×6 etc. just like particle boards or plywood, there are sheets of various thicknesses available like 4mm, 6mm, 12mm, 18 mm and higher.

Block board is special purpose panel, it has wooden strips inside throughout the length of the paneland these thick seasoned wood strips offer very high strength and stiffness to these panels. Block boards are generally needed for long panel application like table tops, doors, heighted partitions etc.