What bolt is this? 

There are drill bits and there are drill bits.

Cobalt by itself means little unless backed up by some numbers and a good brand.

If you can make a punch mark with a centre punch on the bolt, then you can drill it. 

Start with small drill bit, use cutting oil, plenty. Does it bite?

Sometimes you can work harden what you are trying to drill. Usually that’s because of dull bit, too fast, no cutting fluid.

It happens in stainless sometimes. Swap out bit, try again slower.

Alistair

> On May 19, 2018, at 9:10 PM, thewestyman <zolo@FOXINTERNET.NET> wrote:
> 
> Yup, trying but I can’t even start it, so hard.
> I have no idea what makes it hard like glass, but the cobalt drill won’t even start any shaving.  
> This cobalt drill is from Home Depot.  Maybe there is one harder than this.  
> Anyone has an idea what to do?  
> I have already installed the head, would not like to take it off.
> 
> Best regards to the Great List,
> Zoltan