As I'm still busy on commission work I haven't made much progress on the cantina, so as a fill in I thought I would show how I make domes and spiral stairs, as a few had thought they looked complicated.
DOME
Step 1 First we need some measurements, as I don't need a full half sphere, I draw the radius larger than I want, and then measure from further up the circle.
as you can see above, I've based the measurements on the thickness of the foamboard I will be using.
Step 2 using the measurements from above, I cut three discs of foamboard and glued them together.
Step 3 next we need to shape the foam, I start with a scalpel trimming to the rough shape, then use sandpaper to finish off.
Step 4 lastly I cover the entire dome in wall filler to give the rough surface that you see on the buildings in Tatooine.
A handy tool for this stage is a card template of the shape of the dome, to make sure you don't get any high spots. You can also sand once dry, if it gets too rough and lumpy.
STAIRS
Step 1 First draw a circle on your foamcore, with a radius of the width of the stairs that you want.
Step 2 mark out quarters in the disc.
Step 3 Once you've cut out the quarters, you need to mark out three sections, the area for gluing and two equal steps.
Step 4 cut out the bottom step, but don't throw away the cut piece. Then repeat for the next stair as well.
Step 5 glue the two sets together, and also glue the cut out piece underneath at the same time.
Step 6 trim the underside to look more level.
Step 7 finally add filler to fill in the gaps.
Repeat the above process as many times as needed to get the height of the stairs you need.
Hopefully this will be useful to someone for their own projects, so until next time stay safe, and have fun !
Cheers Dave