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I was asked to write a blog describing how I built my 50 gallon flow through worm bin so here goes.
Here is the finished 50 Gallon Bin from the front you can see at the bottom of the bin the ends of the harvesting pipes capped by the 3/4" male pipe connectors. I have cut the threaded part of the pipe connector off because I didn't need them and I thought it looked better
You can also see the 14" x 8" Duraflo Soffit Vent, which is covering the 6" x 8" harvesting hole I cut with my Dremel tool and a cutting wheel.
Here is the back of the bin showing the harvesting pipes capped with the 3/4" PVC tee's that are used to turn the harvesting rods. I put a cut off broom handle through the tees to prevent them from being turned accidentally, and to keep the tee;s horizontal and matched for appearance. If you look closely at the tees you can see on the top a silver screw head. I screwed the tee to the pipe as opposed to glueing so if need be they can be taken apart. I also screwed the 3/4" male PVC connectors to the pipe the same way.
Here is the inside of the bin. At the top you can see the fifteen 1" Louver vents for the warm air to escape out of which draws cool air up from the bottom. they are half way under the rim for appearance and waterproofness
At the bottom of the bin 2 feet down you can see the harvesting pipes with the 3" deck screws sticking out. For the pipes I drilled pilot holes 1and a 1/2 inches apart and then alternated the screws from side to side so that the long protruding parts are on 3" centers.
If you look closely at the top of the bin just under the rim you can see the 1" louver vents in each corner of the bin, there are also 2 more hidden behind the front handle. From the top to the centre of the pipes is 24 and a 1/2 inches
So That's it, here is a diagonal view of the finished bin, it's now ready to fill with bedding and soon some red wrigglers. Looks great in theory, I'll let you know if it works.
Here is a photo of the 3" and 1" Duraflo Louver vents along with a male 3/4" pipe connector. The pipe connector is used to stop the front of the harvester pipes from retreating into the bin. As mentioned above I cut the threaded part of the connector off for appearances sake.