How do I make this hole bigger?
 

I need to SLIGHTLY enlarge this hole for my new helm. I have a hole saw of the correct size. How do you keep the drill from walking since there is nothing for the center bit to drill in to? Any ideas?

Re: How do I make this hole bigger?
 

....by using the three holes to thru bolt the board.

Re: How do I make this hole bigger?
 

Put a doubler, could be made from ply, on the back and fasten it through the three holes on the outside. Just center your pilot hole real well and off you go!

Re: How do I make this hole bigger?
 

Good GOD!!! Did we all post at the same time?!?!?!

Re: How do I make this hole bigger?
 

Mark the circle with a magic marker, use a die grinder with a sanding cone and buzz it out. Wear eye protection and a mask. Take your time and do a nice job.
Good Luck
Ed

Re: How do I make this hole bigger?
 

Thanks Fred, I don't think the bit on my hole saw is long enough, the dash is about 1/2" thick. I'll be giving you a call soon. I have a few questions.

Re: How do I make this hole bigger?
 

The new hole is going to partially cut into those existing holes.

Re: How do I make this hole bigger?
 

That sounds like a good idea.

Re: How do I make this hole bigger?
 

die grinder, but rest your hand on a solid object and keep the bit deep in the hole so it doesn't get away from you and hack things up.

Re: How do I make this hole bigger?
 

put a board on the out side ,the hole saw will cut a place to start in the dash.take the board off (or leave it)and finish cutting.