considering the obscene amount I paid for the plinth I quickly decided against drilling more holes.
What causes more audiophile anxiety ?
A) Putting an extra hole into a - let's call it a "creation"
or
B) Getting the hole position correct.
???
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Many years ago I made my own plinth (for fun-still have it) out of birch, mdf, some other materials. 50-60 lbs ? I think.
A sandwiched block with a cutout for the motor/platter - in this case for an SP10.
One of the main lessons I learned from that adventure, is that removable armboards, or arm pillars that swivel, are worth their weight in gold as far as this audio hobby is concerned. The extra work, skill and time that goes into making this option possible, is considerable and definitely not for the hobby person.