Thought i would post the latest update on my work!!
Firstly i spent a highly boring two evenings wiring the entire layout up to my drawings........ Subsequently i have a maze of multi coloured cables under the board and in the control panel.
I also noticed at this point i had used the wrong switches for the points - push to make would not work the way i wanted the to so i replaced them with two way ( on-off-on ) switches.
I have also been making a start on the first building - this one is to be cast in resin as well - some of the layout is only going to be made from strengthened plaster. This one is to be resin cast as it is my hope to sell some as model kits in the near future.
Anyway, This is how i make one if anyone is interested..... and would like to use the same technique themselves ......
First i make an outline drawing of the section i want to carve, In this case the top and bottom and the sides of the half relief building. These i glue to a board,
Next i cut some sections of balsa wood not to thick about 4-6 mm is fine. I cut each section to be 1.5 cm ( this is the best i have found to stop the plaster just cracking up when removed).
These i glue around the paper shapes following the lines exactly. For windows and doors i cut the shape from balsa and glue it in the hole. The glue i use is a couple of spots of superglue. Then i brush a light coating of vasaline around the interior of the mould.
I then fill these with Javis Fine casting plaster and leave to dry for about one hour.
After an hour the plaster has set but not completly hardened, this is the best time to start carving. If its to wet then it wont carve and if its to dry it will crack and flake. By carving the plaster when it is only semi dry allows me to smooth the cuts etc and easily clean off.
For this step ( carving ) you will need - Mini chisels, a scapel, an old metal file ( large ), an old dry paintbrush and preferably a set of dental picks and a metal edge. You will have to find yourself a thin tool to carve the brick / stone work out with. i tend to make mine from old scapel blades etc ..........
When you have finished a small section brush it off and it should look fine. I tend to find the more i experiment with this method the more impressive the sections look. Its extremly messy though........ An hour or so later and you should end up with something like this......
This then is left to dry for a good few days and you will have the part you have made ready for use. To paint the plaster i spray with halfords grey primer - leave an hour and do it again. leave an hour and its ready to paint.
For doors and windows - its a little more complex!
For tis is draw the door / window out onto a sheet of thin plasti kard. Then i make the door up in sections of plastikard . Using different thicknesses to build up the door. Then i cut out the windows panes from the plastikard and file it round until it is straight. This is another experiment area and at the moment i have managed to develop them to the point to be resin cast. These i hope will be available in the near future for anyone to buy as well....
Ready to take the silicon mix to make the moulds..................