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Use our free composting toilet plans to build a functional compost toilet, and start turning your waste into homemade garden fertilizer today!
The following plans will help you build a composting toilet that is odorless, incredibly easy to use, fully-functional, and portable. That last point is probably one of the most common reasons why people build a composting toilet in the first place; they’re looking for an inexpensive way to dispose of human excrement in a remote location (e.g. cottage or cabin).
Before you start tackling these composting toilet plans, we want to give you a heads up about a few things.
First, in order to use this composting toilet properly, you’re going to need an outdoor composting bin system. We’re going to go into more details about this system on the following pages, however, we wanted to introduce the topic early on in these plans.
Second, these composting toilet plans call for the use of cover materials. Cover materials are just that, they are the materials you will use to cover your waste once you have used your toilet. A variety of materials can be used for cover, including sawdust, peat moss, cured compost, leaf mold, and/or rice husks.
An ideal cover material is highly biologically active (i.e. high in microbial activity). The more active this material, the better it will be at absorbing odors from your compost toilet. Please note that we do not recommend sawdust from woodworking shops, since this material is completely dry and devoid of biological activity. Instead, when we say sawdust, we are referring to the waste product from sawmills. This type of saw dust is still moist, rich in microbes, and partially decomposed; all of which make it a great cover material.
To successfully use these composting toilet plans, you will need the following materials:
What is AC fir plywood?
Softwood comes in a variety of grades (A through D). Each side of the wood is graded according to the number and severity of knots, splits, and other defects. Grade A is the best, whereas Grade D is the worst. So in this instance we are recommending one side of the plywood be Grade A (the fir side), and the other side be Grade C. This is one of the most common grades of fir plywood, so you shouldn’t have a problem finding it.
Position the bucket 1.5″ from the front edge of the box, and center it from both sides. Draw a circle around the bucket’s edge to indicate where you will be cutting it. Remove the bucket, and use the jigsaw to cut the hole for the top of the bucket.
Position the toilet seat over the bucket, and mark where you will need to drill holes to attach it to the frame. Drill these holes, and attach the toilet seat.
ATTENTION – The toilet is only one part of a larger three part composting system. This system will NOT work without all three parts in place. To learn more about the other parts, including the proper maintenance of your toilet, and how to properly compost your waste, please refer to page two of these composting toilet plans. It is incredibly important that you understand this entire system, so that you eliminate all pathogens.
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