## Thursday, December 19, 2013

### Paper Snow Globe Sliceform for Christmas Gift Giving

Snow Globe Sliceform

This snow globe is adorable.  It took me hours to design but it was worth every second. This is a wonderful Christmas present.  I am sure that any recipient would love to receive it.  It can be mailed as the base is not glued to the globe and everything can fold flat.

Here is the PDF.

Here is the .Studio file.  I used cardstock.

Glue the six scenes together as shown
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Add the tabs to the center of the scenery as shown.

Completed scenery﻿

Arrange the snow globe base pieces according to size and type of slit.
Attach all of the top facing slits first.

Completed base.﻿
Arrange the globe sliceforms according to size and slit position.

Glue the scenery to the center sliceform as shown.  Be careful not to cover the slit.

Another view of the attached scenery.

I like to do all of the upward facing slits first.

Completed Snow Globe

Math used for the base were cone minus sphere equations:
Cone slice z = (height of cone/radius of base) x sqrt( x^2 + y^2)
Sphere slice x^2 + y^2 + (z - translation distance)^2 = (radius)^2
Translation distance = (height of cone cutoff) - (sphere radius) - (sink height)
Height of cone cutoff "a" comes from solving: (radius of bottom)/(radius of top) = ((height of base)+a)/a
Sink height = radius of sphere - h
h comes from solving h^2 + (radius of top)^2 = (radius of sphere)^2

#sliceform #paper snow globe

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