OK--for anyone who wants to try this now or for future houses, a mini tutorial on how I made my spiral staircase. WARNING: The staircase is really for effect and not all that "realistic"...the kit I used would have needed a much bigger opening...you can adjust the width of the treads as well; I used what was in the kit plus cut a few extra treads with the scraps...
You will need a dowel or chopstick and the stair treads, toothpicks if you want a railing and something flexible for the railing...glue and paint, a drill with bits.
Drill a trial hole that will fit your dowel or chopstick..make sure it fits a bit tight.
Then, drill the hole as close as you can in one corne. Drill each tread like this. I used the first tread to mark each of the treadsr:
Do the same thing for the toothpick or whatever you are using for your railing posts. DO NOT DRILL ALL THE WAY THROUGH! You just need a small start to hold the post. Make sure it is in the OPPOSITE corner of your first big hole.
Slip your first stair on the pole. Put the pole down your stair opening and mark the top and bottom of where you want your stairs to be...I did mine by eyeballing where I thought the bottom step would be made by my little guy:
Test run and play around with how many treads you want...you don't want your little people to have to jump down the stairs...
I had 9 treads but each house will be a bit different:
Paint the treads and the railings. The pic shows the pole painted--big mistake...don't do it...
I can't stress enough that you must put all the treads in exactly the same way, with the little holes all going in the same direction. Glue your first and last treads down near the pole. They should point in the same direction.
You can do math here or eyeball the spacing...the math is the length of the space between your first and last stair divided by the # of remaining treads+1 (my space was 4.5 inches...I had 7 more treads, so 4.5/8=.55 or a little more than 1/2 inch between treads)...believe me, eyeballing is easier...
Twist your treads into a pleasing and somewhat practical pattern--test run it by fitting it down the stair opening...once you are happy with it, glue to the pole:
Glue in your railing post. When dry, add some sort of flexible handrail--I used some cord I found to make jewelry...paint how you want and glue the staircase into place!
Use your imaginiation...you can change up the pole, the treads, paint the stairs, carpet the stairs, etc.
Let me know if you have any questions...I have more pictures but not sure they are relevant but maybe they are!