Bob.
1 Wait until the management have left the building .
2 Put plug in bath or sink, depending on how big the model is.
3 Take container of desired paint colour ( I my self would use house 4 BO )
Fill bath or sink and lower the model in.
4 When the required hight has been reached remove and allow to dry .
5 When management return and ask what has happened to the bath / sink say it was back pressure in the mains and your taking legal advice.
On no account mention either the model, me, the forum or Steve Jones having anything to do with this .
Sound John, but dangerous to my health, retirement, teeth, breathing. Sanity and my under carriage!
Some other problems to your master plan?
1. Will not fit in sink
2. Do not have a bath
3. Blaming welsh water might work but will need my bestest porkie pie face
4. Sadly but not surprising no 4BO, but numerous gallons of StuG related paint
5. Plus point might make the news as Julie would make me live on one of the duck infested islands on the lake at bottom of the st!
6. Could use the Mr Bean method, one tin of paint with a explosive device in it, lite fuse and run, run, run!
Thanks all for the many differany ideas, will have a good old think, thats dangerous as well
Thanks bob