Since EXPO EM Autumn I have been working on Tackeroos wagon stock. The wagons were not the priority, making it work was!
Realising that most of the camps supplies (other than coal) would be a mixture of food, materials and munitions we need more open wagons with sheets (tarps).
Researching tarpaulins I realised that our chosen period of Autumn 1917 turns out to be a great but narrow period for wagon sheets.
In January 1917 company sheeting fell under the common user agreement. This means that I can put any companies sheet on any company wagon. Once this agreement was in place railway companies simplified the designs they painted on the sheets (why try two hard when they may not be on your wagon or on your own metals...).
So from 1917 for a period of probably 4 years you have the ability to add any sheet to any wagon and still use those sheets with Red or Yellow lines which would have been painted out when the sheet was next in for maintenance.
Anyway:
I have had a go making my own:
Black paper from hobby craft
A white pen, this one was a Gelly Roll 08
Excel spreadsheet and my own ink jet printer
So I created the design in Excel using the rows and columns to get the proportions correct (In fact I have made the first one too narrow).
Adding and moving letters with text boxes and the nearest font I could find, also adding some big fat lines
Then print at a very low % of its real size (trial and error) on to white paper until the size was right.
Put in the Black paper and print.
The colour ink I could see best on the Black paper was surprisingly Black.
Then armed with magnifier, light, my glasses and the white pen I went over the Black printed letters.
I've added the sheets number by hand and painted the red lines with paint.
Reasonably happy for a first attempt, just need to research some designs
Andy