Pinblock drilling rig

[William Monroe]

OK,

I figured moving the platform, but figured, "big deal, doesn't take much to 
move around anyway."  As far as bearing down, some loon I know suggested 
adding "a high volume vacuum pump and a double acting diverter valve, to 
lift it with pressure, and suck it down with vacuum when it's where you want 
it."  Sounds like a piece of cake to me.  Double  ;-]

William R. Monroe


>
>> And Ron, why would an overhead be any advantage for drilling vertical 
>> hitches??
>>
>> William R. Monroe
>
> A couple of things. You wouldn't have to move the platform ten times, and 
> you could bear down on the bit without lifting the front of the 
> contraption.
> Ron N