I am having some small chip-out issues on the back side when through boring 3/4 melamine.

I have seen videos of Gannomat boring machines that drill from the bottom with no chip-out. The literature says something about some sort of "breaking" for clean though bore. Anyone know what that means?

I'm getting chip-out even with a new spoil-board.

5 drill aggregate running at 4000 rpm.
Using carbide through bore bits from Morris Wood Tools.
Currently using a strategy of cutting at .2 ips through the top skin
speeding up to 1 ips then slowing to .1 ips throuth the bottom skin.

this seems to have yielded the best results.
the top is always good, the bottom somtimes has chipout.

Any suggestions for a better strategy to yield better results on the back?

Thanks
Bob