Well... we know they are growing at a faster pace than $212k in...

Well... we know they are growing at a faster pace than $212k in the remaining months of this year given today's announcement and AGM chatter - but even if you just kept $212k x 6 = $1.27m + $200k R&D = $1.5m pretty much.

My calculation to make some sense of it is actually on a per shift basis - as the board indicated the switch to 24/7 shifts sometime around October (prior to that I presume it was double shifts and weekends but not sure).

For sake of example - what if:
If double weekday+weekend shifts (12 shifts per week)= ~$210k per month
Then, 24/7 triple shifts (21 shifts per week) all things being equal = ~$369k per month

So - we can do first 4 months at 12 shifts, and last 2 months of CY2018 at 21 shifts = $1.6m + 200k R&D = $1.8m 1H19 profit

It's impossible to totally predict but there's plenty of room to smash $1.5m at the growth pace currently being experienced.

Full year could even fall somewhere like $7m to 8m NPAT given 2H is traditionally a much stronger half due to peak season in USA. (I still calc $6m to $7m if growth flatlined during 2H19)