We managed to drill the top for one R9800 block, first time making the sandwich top. The drill press being not so great in precision, it's a good idea to go with several drill bit thickness to achieve the better result. Drilling the hole for a barb is the worst thing with this drill press, the drill bit is 14.5 mm and breaks the plexy very easily.
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'Out of cheese error...
...please reboot the universe (press the GBL to continue)'
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