TOP
MIDDLE
BASE
( co-ordinates starting at bottom left of block, 1mm increments )
Top is 50x50x2mm
- Holes are 15mm diameter
- Hole centres at (25,39) and (25,11)
Middle is 50x50x10mm
- Rectangular slits are 8x23mm
- Corners at
[ 1st set : (21,0) (29,0) (21,23) (29,23) ]
[ 2nd set : (21,50) (29,50) (21,27) (29,27) ]
Base is 50x50x3mm
- Groves are 2mm deep
- Grove placement described (outside,inside) as measured from the centres of the block.
(50,48 )
(46,44)
(42,40)
(38,36)
(34,32)
(30,28 )
(26,24)
(22,20)
(18,16)
(14,12)
(10,8 )
(6,4)
Then a 4mm diameter hole 2 mm deep in the centre of the block
Any suggested improvments?