hole drilling!!

[mannwranglers]

has anyone tried drilling a hole at about .650 and about 12 inches round.....
I tried to do it and it came out oblong.....any pointers??

George,
SC

[bergerud]

Explain how you drilled it. What was the max pass depth set at? Was it shorter in the x direction and wider in the y? Did you use the 1/8" cutting bit?

How accurately does your machine measure the length and width of a known board?

[fwharris]

George,

My guess is that it lost board tracking. Was it oblong in the Y or X direction? Were you also doing this in one pass or multi pass?