Here's how to make raised images for tombs and doors. To see how to build the tombs shown, check out the Small Block Mold page.
Start by rolling out some modeling clay no thinner than 1/2".
I'm using a small skull from a "Goosebumps" game. It works really well because there are no sharp details on it.
Press the skull deeply into the clay.
Press the skull about halfway into the clay. If you press too far, you won't be able to remove the skull from the clay.
Do this several times to make a pattern of skulls in the clay. You'll notice that new impressions will distort the ones already there. This will help give your door an eerie look from the distorted skulls.
Now you need to make a clay barrier around the outside. Be sure to seal it well so your casting material won't seep out.
Fill the clay with casting plastic or hydrocal (as shown further on). Plaster doesn't work well for this because you can't mix it thin enough to get into all the small details without it becoming very weak.
Let the casting harden completely before removing the clay.
When I removed the casting from the clay, I found that the clay stuck to the casting plastic in several spots. I think it's because the casting plastic heats up and melts the clay slightly.
To clean the casting, I had to use paint thinner and a toothbrush to scrub the clay away (not a fun task).
I also found that the casting plastic reacted to the clay, causing small pits to appear in the surface. I didn't mind because it gave the cast a corroded appearance.
Here's the finished door. I think the overall effect turned out great!
Cutting the casting plastic to fit the door shape may not be that easy for some of you. I have a jigsaw and sander making my job much easier.
Now I'm going to do the whole thing again using hydrocal instead.
The hydrocal casting came out much smoother and cleaner. Notice that I pressed one skull deeper than the rest so it would stick out more.
The clay didn't stick to the hydrocal as much, so not much cleaning was required. I used this casting for the lid of a tomb shown here.
For this example I'm using some bits from Games Workshop miniatures. I think skeletons give the best effects.
Use shields, weapons and whatever else you can find.
Here's what they look like painted. The first one is made of casting plastic. I use it as a large steel door.
The second is cast in hydrocal which I used for the tomb shown on the Small Block Mold page.
Be sure to experiment on your own and see what happens!