The other day I managed to remove a broken screw from a very expensive casting. Specifically, the engine casing of a Ducati motorcycle. But the job turned out to be a breeze using a backwards drill bit!
A previous “mechanic” had broken one of four of the M6x16 sump cover bolts. Instead of removing the remnants they had globbed it over with RTV silicone for the another poor schmuck to deal with at the next oil change. A few minutes after discovering this I could fully understand why. Being at the lowest point on the engine, it’s not an easy feat to find room for a drill… and then drill into the screw while upside down. But disregarding this hurdle, I resolved to remove the broken screw and repair it properly.Continue reading The Magic of a Left-Hand Drill