[TheForge] Re: Free the Stake!

[xlch58 at swbell.net]

Mike Spencer wrote:
>> The ultrasonic technology is fascinating, but how practical a
>> suggestion is it?
>>     
>
> Not very.  OTOH, subsonic might be effective: suspend the block/stake
> combo upside down on something pretty hefty, then go aboard of it with
> a pavement-breaker sized jackhammer at 10 Hz.  Probably pop that
> sucker out in no time.  Easier to borrow a big mutha jackhammer and
> compressor than a wading pool sized sonicator, too. :-)
>
> Jobs like this are just about the only thing I use my 16# sledge
> hammer for -- e.g. getting a 1-7/16" shaft out of a flatbelt pulley.
> But I wouldn't want to counsel a move that might bust your swage
> block.
>
>
> - Mike
>
>   
As long as we are taking flights of fancy, a simpler approach might be 
to bolt a good sized electric motor to the stake (big all thread u 
bolts) and mount on off balance weight to the shaft and let it run with 
penetrating oil.   I have made these vibrators before for 
sandblasters.   The off center weight  is easy to make, just drill a 
hole a 1/2 inch from the side of a chunk of square and drill and tap it 
for a set screw.

Charles