What tooling to drill lots of 10mm holes 45mm deep?

[AlanMJackson]

Hi Lee,

It's a bit of a basic question, but how do you get a good finish on the bottom surface when through drilling wood? Even when I do this by hand on a drill press I find this hard. I use sacraficial wood underneath but the holes still blow out. Do you need to clamp down really hard?

I like your idea of slowing down again for the bottom surface but even when I feed slow the whole way it was blowing out so I must be doing something wrong.

-Alan