The "Tee" - Center Connector for Dipole Antenna:

This is just my example of how to build a center connector for a dipole. Though commercially available versions are cheap and easy, why not make one out of your scrap junk and do it differently everytime you put up an antenna! This one fit my requirements; it was compact, waterproof and could hold the weight of a man! (sure)
The construction difficulty is: Advanced. As it requires some metal grinding and cutting.
The parts used were a small 1" sized PVC, but no length-pipe was used as the connectors are more rigid and made of a stronger PVC.
This will hold more weight than the connector end of the feedline could hold. (No Guarantees, Builder assumes all responsibility)

PVC Parts to be used
PVC pipe connectors were used. No length-pipe was included. All 1" sized.
(Click to enlarge photos)

Adapter was cut in two

The Reducer adapter was cut in two, about a 1/4" down from the small end.

The problem of fitting the parts together
The Panel Mount SO-239 UHF Connector to be sandwiched between the two halfs.
Problem: Square peg in a round hole... what to do.

File corners off of SO-239
File the corners off of the SO-239 until the base is round at the same diameter as the Reducer.
Putting tape around the theads will prevent ruining the connector.

Should look like this...
Readied...

Oooops....
Ooops... Tried to attach the SO-239 to Reducer by melting it with a soldering iron. Man, that looks bad...
I recomend epoxy.

Leads fashioned...
Leads are fashioned out of stranded #10 guage insulated wire.

Solder leads to connector...
Soldered leads to connector. Keep outter lead close to round inslulator lip.

Connector parts glued together
The prepped SO-239 with leads and two parts of Reducter glue (or melted) together.

Leads and connector end threaded in...
Leads and connector ends are threaded in after access holes were drilled into T-piece

Connector glued into body
Connector glued with PVC cement into T-piece. Sealant placed inside lead holes.

Endcap parts layed out...
End Caps drilled through to accept stainless-steel hardware.

Built Ford Tough... (GM actually)
These are tough! Ratcheted together and ready to hold a massive dipole antenna!

Final Construction (So-239 View)
Ends are PVC cemented together while being aligned. Test initially to prevent hardware touching lead connections or binding leads.

Final connector read to go on antenna...
Final assembly, ready to be soldered and attached to dipole wires.
Dipole can be pre-soldered directly to SO-239 for extreme weather-proofing.