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Frogs 'n' Ponds

Robert Preston rapr at MED.PITT.EDU
Thu Jun 16 21:46:54 EST 1994


Gotta add my 2 cents to the thread:

Mark a block of birch or other hardwood with a rectangular grid with
spacing equal to a standard microtiter plate (be creative about the
shape of the block itself).  Starter-punch the 48 holes.  Find 48
nails (brad-headed, probably) of whatever size you want your spots to
be (waste a plate: test a few nail sizes for the spot size they make to
find a size you like).  Alternatively, cut 5-cm lengths of welder's rod
or similar steel or aluminum rod (coat hanger would be fine) x 48 and
even up the ends with a belt-sander.  Find the drill-bit size that's
just a pinch smaller diameter than the nails, set the depth-gauge on
a drill press and drill the wood-block in 48 places to the same depth.
Press-fit the 48 prongs.  Voila!  It's faster than Federal Express and
cheaper than anything sold anywhere.

Rob Preston
rapr at med.pitt.edu





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