Insulation Vapour Barrier

Well all the First Fixes have been passed so I've put up all the wall Bat insulation "R20", and the VB... So now with a Plastic ceiling the place warms up a little with the Heater...

The 1" thick 2'x4' MDF Sheets I got for $0.75 each (offcuts from a Mill), needed trimming and squaring up, so that's been a Labour intensive job but they where cheap so I can't whinge to much. A friend suggested routing the edges to make them look like a Brick stile finish once there painted, I'm all for good ideas so have a put a Chamfer on all the edges, and am very happy with the results... but it is alot of MDF dust.... and I'm bored with weiring a Mask..