Sunday, June 16, 2013

Custom PONG Build Part 2, BT-50 Segment Assemblies


These yellow BT-50 segments feel thin compared to standard brown BT-50 tubing.
If the inside diameter is thinner, the fit of the die-cut centering rings would be loose. These fell right through the tubes.
They are too thin to be built up.
I could have glued a liner of 20 lb. paper on the inside of the tube to make the inside diameter a bit smaller.
The rings should glue just inside the tube edge. This would leave a joint to be filled.
The method shown here strengthens the assembly, no seam to fill and gets the rings in the edge of the tube. It makes a "shelf" out of the 20 lb. paper edge giving a larger gluing surface.
I'll glue the thin centering rings to a piece of 20 lb. copy paper.

TIP: Lately I've been using a glue stick for many paper to paper joints. It stays put, doesn't run or wrinkle thinner paper.


A line of glue is run around the BT-50 tube edge.

Set the tube over the glued down ring.
To smooth out the internal glue bead, turn the tube over the ring.
You'll end up with a even, smooth internal fillet.

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