Most power drills are now VSR. (Variable Speed, Reversible)
There is no set RPM for a drill. It depends on the application and material it is cutting.
600 rpm
Modern dental drill at 500,000 rpm
About 400,000 RPM
Use a standard HSS drill bit, but slow down rotation to about 500 rpm.
Yes, you can drill Lucite. Keep to a fairly low speed so as not to melt it (below 500 rpm.)
In a bowl of water use a diamond tip drill and cover the stone with water. you need to use the drill with very little pressure and drill half way then drill from other side to keep from breaking out the sufface of the hole. The drill RPM needs to be at least 10,000 - 15,000 RPM.
B. 2,500 rpm
B. 2,500 rpm
golf ball it by using a drill, you drill little holes on it.
variable speed drill No. The correct answer is: Variable Speed Reversing, meaning it has a switch that lets you run the drill clockwise or counterclockwise, at any speed from 0 RPM to the maximum rated speed for the drill in question.
You would use a worm drive meshed with a gear that has 130 teeth.