Shallow countersink bit - where to source?

[Benjaminpalma]

Does anyone know where I can source a shallowed-angled countersink bit? I can only find ones with a 90-degree angled head. It's for grinding out blisters on the hull of a fibreglass boat - so a bit for wood or metal would do...

Thanks!

[CedGTV]

For a shallower angle, could you not use a larger drill bit with a depth stop attached to the drill to stop it from biting into the hull. ?

[ColinM50]

Aha, an osmosis repair eh? Can't help thinking that a drill bit's not the best tool for the job, it'll just wander all over the place. I borrowed a small hand held router, a Rotorzip I think it was called, and it was OK. Best tool was a very carefully used angle grinder. Don't envy you the job though.

[hairyben]

what about those grinding stone drill bits like:

http://cgi.ebay.co.uk/5pc-GRINDING-MOUNTED-STONE-D...

other than that I'd ask in a proper tool shop.

[Benjaminpalma]

Thanks for suggestions chaps!

[Simpo Two]

Maybe try the Boats, Planes and Trains forum and rename it 'fixing osmosis'?