10-05-17, 11:10 PM 
		
	
	
		Circlip looks fine. :thumbup 
I used a very high quality HSS bit, but with slow speed with a variable speed drill.
The shaft is case hardened and using a slow speed it will get through the case hardening.
If the speed is to high it will over heats and destroy the bit.
	
	
	
	
	
I used a very high quality HSS bit, but with slow speed with a variable speed drill.
The shaft is case hardened and using a slow speed it will get through the case hardening.
If the speed is to high it will over heats and destroy the bit.

 
 

 
