I'm making an integrating sphere to measure lumens and I need to cut a
14" Jolly Ball in half along the seam.
Any ideas on how to rig up a jig to do this?
This guy did it
but I can't figure out how to cut it cleanly.
Can you do this:
Use a felt pen to mark a line perpendicular to the seam across the
Cut along the seam with a jig saw and then press glazing channel onto
both rough cut edges. You could spread the glazing channel open with
your fingers and apply a slow curing construction adhesive to the inside
of the channel before pressing it onto the rough cut edge of each
Here's what glazing channel looks like:
or at least one kind of glazing channel anyway. Glazing channel comes
in different sizes and cross sections. You can buy glazing channel to
accomodate every thickness that plate glass comes in.
Align the felt pen marks on both hemispheres and have helper hold the
two hemispheres together while you apply pieces of duct tape across the
seam to hold the two hemispheres together.
Glazing channel typically is made out of a relatively soft vinyl rubber.
It is used around the edges of a single pane of glass before the glass
is press fit into the aluminum frame of a sliding aluminum window.
Metal corners are used to hold the corners of the aluminum frame
together. Then it's common to use an awl or a nail punch to dimple the
corners of the aluminum frame so they bite into the metal corners to
hold the aluminum frame rigidly together.
Any place listed under "Window & Glass Repair" in your yellow pages
phone directory will sell different kinds of glazing channel by the
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