If you go the hole saw route use a small bit to drill a pilot hole the entire way through. Then drill 3/4 of the way through from one side and then switch to the other side to finish the hole. That way no tearout/splintering/blowout. If you cannot do the double side method then clamp on a sacrificial piece onto the side that will blowout and drill through and into the scarficical piece. The sp will keep pressure on the melamine thus reducing the potential for blowout.
__________________
Shameless self promotion
|