did you go . ? i have seen 3d shape printing ,and i think concrete , but no nothing of spec etc . depending on tooling etc makes a lot of scene to me . specially country s with lots of rain ...GB etc lets hope some of the big players jump on it ...i does make me think i have to say . ,,,you never no,, good luck
seriously ,,, ? burn rate? ive been burnt and wont come back . why ? because i diden,t do enough research , in vested badly , and this company could not run a bath . hence enjoy . game set n match . call the undertaker . please close the door .