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what is a proper sink trap?

updated sat 11 sep 99


Bob Branch on fri 3 sep 99

HI all:
I am a small potter. I throw about 25-50 Lbs. a month.
My question is what is appropriate for a sink trap? I am using a single
laundry tub in the
basement with a 5 Gal. bucket sitting in a cat pan. I wash into the bucket
and it over flows
into the cat pan which over flows into the sink and down the drain to the
municipal sewer. The washing machine also empties into the tub and goes
down the drain directly.
Is this method and the amount of clay I use sufficient to stop any future


Bob Branch, (Fairport, NY, USA)
Home Page:
Computers, Ham Radio (K2YNW), Pipe Organs, Weaver, Potter, and Dreamer

John Rodgers on fri 10 sep 99


The buckets were the 5 gallon paint or Sheetrock filler type buckets that can
be bought empty with lids at most any hardware store. A 2" to 2-1/2 inch
diameter pvc pipe is used between each bucket. Two holes are made in each
bucket up near the rim, on opposite sides. The holes must be made 90 degrees
from the attach points of the bucket handle.

The top of the holes should be 1/4 to 1/2 inch below the rim of the bucket.
You can mark the holes then drill a small hole in the cut-out area, insert a
coping-saw blade through it and re-attach the saw handle. Then the pipe hole
can easily be sawed out.

Once all the buckets have the holes cut, arrange the buckets in a row, amd
measure sections of pipe to go between them and then cut. The pipe length
should be long enough to allow at least one full inch of pipe to stick into
the bucket. Seal the bucket/pipe connection with Plumbers GOOP. Why GOOP?
Just in my experience it works best. I have tried all manner of other
sealers, including RTV, but GOOP has never leaked.

The last bucket in line will have the main drain away from the system in it.
But it exits just like the rest, and must be sealed.

The first bucket sits directly under the sink drain. This bucket is the one
that will need to be emptied most often.

There are many ways to arrange the buckets. If your sink can be put on a
platform, more's the better. This will allow the buckets to be stair stepped.
The bucket plumbing will not have to be sealed at every joint. Seal where it
exits the bucket, and allow the end of the pipe to pass over the rim of the
next bucket. Makes the whole system more portable. Below are two examples of
how this can be done.

| |
| Sink |
drain>> | |
| ---------
| ---------
| | |---------- |
| |
| | |
---------- |
|----------| |
---------- |
| |
| |
|-----------| |

Either way will work. The first bucket will fill up first. Then the second.
It may be a year or more before the others will need to be emptied.


John Rodgers
New Mexico

deborah goletz wrote:

> ----------------------------Original message----------------------------
> A few days ago John Rodgers wrote: "in a shop where I worked, five
> 5-gallon buckets were arranged in a row all connected with a 2-1/2 pipe
> between each."
> Rodger, would you tell us the details of how these buckets were arranged?
> How high up on the buckets were the pipes? And how were the buckets
> cleaned out?
> TIA,
> DeBorah Goletz