Any ideas for removing a snapped hex key tip in a sprocket retaining grubscrew?

[timnexxial]

It's bloody hard drilling, (excuse the Australian vernacular)
Does annealing make the metal easier to drill, Whipper?
And what's a good speed to drill with the sharpened masonary bit, Robbie? s'pose I can't use the hammer setting (bugga!)

[whipper-ag]

[liflod]

I've been told that taking a large piece of angle iron and a BFH, drive the sprocket with the BFH via tha angle iron. It will snap the set screw and allow the sprocket to slide off the axle.

I've used a diamond burr on a dremel to remove the broken set screw on my Max IV.

I've also drilled and tapped all of my sprockets to 3/8 so that I can use a larger set screw with a 3/16 allen head on them. The 3/16 allen is less likely to break and the larger diameter is less likely to freeze in the hole.

[timnexxial]

Sage advice gentlemen.

I was just kidding on the hammer setting, although the angle and BFH will make me feel better as a last resort and upsizing was definitely on my mind.

Will anneal and carbide drill today, cheers Tim

[rdr]

Sage advice gentlemen.



Will anneal and carbide drill today, cheers Tim

yes let it cool as whipper said then drill it our wit pleanty of oil . robbie

[timnexxial]

Got it and thanks for all the help! cheers Tim

[LarryW]

Glad to hear!!!!