Do you mean wider in the valley? or opening up the hole?

 

Wider in the valley. About how long did it take you to do that with the dremel?

 

Only about 20min. I actually killed my dremel and used the dewalt corded drill. It literally took me longer to setup for porting than the actual porting lol. These ebay carbides are legit for the price.

 

I ended up buying some Dremel carbide bits off Amazon for about the same price. Have not given them a try yet. I like that time much better then I was getting with my die grinder. The compressor I have just could not keep up with the die grinder.