ok so i began the milling with a drill press and an xy table
the 1mm channels where coming very good and neath (i did not excpect that acuracy) until my 1mm cobalt end mill split up into 2 pieces
and the funniest thing is that i could not find where the piece of the end mill ended.
this ruined my block, i have to start it all over again
some problems encountered during milling with the drill press:
i will have to make the channels equally long because i could not calculate exactly on my eye where i had to start the channel with the 1mm bit from far away.
i managed to do the sides holes, the place which holes the water before it exits the block. that was quite an easy job and the milling came quite nice. i did that using a 5mm 3flute end mill.
but the 1mm end mill