I would not use a forstner bit on a rail tie....
I would use like an electrician drill bit....nail cutter, lots of material
You can find these at garage sales and tool sales...
Rail ties are tough, and could have rocks embedded.....and or steel.
"SteveB" wrote in message
I got a bunch of Forstner drills over the years at yard sales. Some
have round shafts, some have four sided shafts.
Are the four sided ones for use in a brace? The old hand style drill?
I need to drill some railroad ties, and some thick telephone poles. Do
these chuck up safely to a regular drill, or does it take a special
drill to run these bits?