ok i'm getting somewhere with the design of my machine and as i start to think ahead to how i'm going to assemble everything, the thought of using my cordless drill as reliable as it is, fills me with doubt over the accuracy i'll obtain from this method.

this has lead me to think about buying a pillar drill, so... is the following suitable for drilling steel box section ready for taping so i can mount my rails? would i also benefit from some kind of centre punch? it's been about 12 years odd since i did any metal work at college and somewhere deep in my memory i'm sure a centre punch help get a more accurate hole? so could somone recommend one if i need it

ROTARY PILLAR DRILL DRILLING PRESS BENCH MACHINE TABLE - 3 YEAR WARRANTY | eBay