old trick,new to me

I was on a different site and found this tip.

I know it's old hat for some of you but maybe not for some others.

Anyway, if you have a fastner with the edges rounded, in my case it would be star heads on an older jeep, use a dab of valve lapping compound to get extra bite.
The abrasives act like a bunch of little teeth and dig into the metal.

I love little tips like this and thought i'd p*** it along.

 

Lapping compound also works on phillips head screw drivers if you have a screw thats to tight. Put a little compound on the tip, it helps it from slipping.