Overflow pipe done (?).
Finished the overflow drain pipe installation. The process was difficult but I believe I have a working drain pipe.
I used:
drill,
drill bit extender,
2" diamond hole saw with triangular shank,
sharp chisel and hammer,
carpenter's level,
sharpie marker,
3-in-one oil,
bulkhead adapter,
1-1/4" male thread/slip pvc adapter,
8ft x 1-1/4" pvc pipe,
drill with sanding disc,
conicall stone grinder drill bit and
a small bit of dried latex paint dripping.
I ground down the shaft of the hole saw till the drill socket fit. I attached the socket to a socket/hexagonal shaft adapter and then, the hole saw, to the socket.
The small bit of dried latex paint was used towedge the hole saw into the socket. The shank was a little too small.
After drilling through the first wall of the block, I attached a drill bit extender.
Alignment was all but impossible. I used a hammer and chisel to chip away parts of the block's interior walls. The external wall hole was the only important one.
The pipe ended up a little off center which put a little stress on the pipe but the pipe was plastic and long enough, about four feet, to bend some.
I had to disassemble the unit because the piueces were sticking and I needed to preserve the mobility of the setup.
I sanded the pipe end and slip adapter inside to insure removability. I also oiled the slip. I reassembled the unit without glue, accordingly.
Both gutter drains have been opened in order to test the overflow pipe come the next extended rain.
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