On Sat, 15 Dec 2007 05:17:16 -0800 (PST), with neither quill nor
qualm, BoyntonStu quickly quoth:

On Dec 14, 11:35 pm, clare at snyder.on.ca wrote:

Why not use a tension cord and a tab and slot arrangement or pin and
slot. The tension cord holds ittogether, you pull it apart and fold it
so you don't have to go chase the bottom end when it rolls across the
floor.
3/4" tubing with a "plug" screwed, glued or rivetted in one end,
with"tits" sticking out the side Slot cut in end of second pole which
fits snuggly, but not tight over the protruding plug. Tension cord run
through center of plug from end to end of combined pole.

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Not a bad idea.

However the tension cord prevents the user from separating the 2
halves should they require only a 5' pole.

The tab and slot is where my thinking is going.

Let's start with 2 - 3/4" Dia wood poles.

Drill a hole for a 1/4" dowel into both.

Remember, there is to bending force, only compression.

Dado cut across the ends forming 2 slots and 2 tabs in both.

Place loose fitting dowel with glue into 1.

(You could start off with tubing and do the same.)

Done!

What do you think?

They'd soon split and fall apart due to unforseen side pressures
unless the slot was short and the doweling long.

Why are you not buying standard, off-the-shelf light bulb tools?

Another consideration is the spring-loaded dowel like pool skimmers
use. It prevents twisting or pulling apart until the dowel is
depressed. Like this: http://tinyurl.com/32yg6h

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Seen on a bumper sticker: ARM THE HOMELESS