After building the model myself, I have found tab and slot construction
rather tricky for students. I do not cut slots, I bend the tabs
and glue them to the marks for the slots. Where small tabs are to
go through slots in a larger tab, I cut off the small tabs and glue the
place of dowel, I find skewers from the supermarket work well.
For the length skewers I had, I needed to cut 2, at 45 degrees, and
super glued the ends.file:///G:/Science%20fun/compton-model.html
The instructions refer to 8 BATSE pieces, but there are patterns for
only 4, so I printed a second copy of that page. If you are
preparing for a whole class, using a photocopier to make pages of just
BATSE pieces would be more efficient. Using tweezers that can
reach inside the small pieces helps in gluing the BATSE together.
Using Ping-Pong balls for the domes of COMPTEL and EGRET works if you
have enough of them handy (cracked ones will work). Otherwise, I
have created a pattern for the domes
which you may use.