I am veneering slab doors for a kitchen using MDF. I have never worked with this material before and need info on what I should be looking for when I purchase it. Are there different grades? Is the MDF that I purchase from my local lumber supplier (not Home Depot) a lesser grade?
From contributor B:
It all depends on what you bought. MDF comes in different densities and thus surface hardness. Some is considered an exterior material for use in signs, some is good at being routed, some is lighter in weight than others. Some is designed to turn table legs out of and comes in 3" thick sheets. MDF can be anything, so you need to ask your supplier what exactly they are selling. Plumb Creek is one of the manufacturers of MDF I like.
If they are standard slab doors, you should be able to buy 8 X 4 sheets of pre-veneered MDF 19mm thick. Most come with an A grade front and downgrade back but you can get A/A sheets as well. Then you just cut to size and edge with veneer edge tape. Imagine the labor that could save you.
Just make sure you get MR (moisture resistant) board if it's going into a kitchen.
Work on having really good dust extraction and mask up when you're cutting MDF - it is a very fine dust and is said to be carcinogenic over long term exposure without a respirator.