Burned 8 discs, broke prematurely 2. Did 3 halves of the blocks. Bought package of 6 discs for 2.5 Euro. And 3 arbors for 3.5 Euro.
I'm not gonna tap them myself cos' I would have to buy the tappers and as long as I don't find barbs I can purchase, it's better to have all that made by machinists here. I'll buy the taps and practice a little on other materials and leftovers (maybe next month) but now I can't wait to see finished blocks. Also, need to buy some good big dia drill bits for the holes.