maandag 14 mei 2018

DIY WºRM building plan + manual.

First Le Compostier Manual for a DIY WºRM

(voor Nederlands zie hier)

Le Compostier publishes first DIY Worm Hotel Manual.

With great pride and pleasure I present my first published manual with the buildingplans for a DIY Worm Hotel for single households: The WºRM Single. 


Ever since I started fantasizing about making furnitures that would make it more practical and classy to compost organic waste in urban settings I have wanted to design a furniture that people could build themselves for their own homes. As part of the crowdfunding of last year I offered the possibility to buy the building plans for a worm hotel. It still took me a few months to realise the design. But now here it is!

Building plans & diy manual for the worm hotel.

Making the building plans & manual was more of a challenge then I had thought and I was very happy that I asked my dear friend Ioanna Siviti to help me with the 3d drawings. With her graphic design skills we managed to make a nice booklet from the building plans & manual.

It has been a lot of fun working on this design and as this is only the first of a series of models that I want to offer as DIY Manuals I am already looking forward to be able to print the next booklets.

Worm hotel for single households.

The WºRM Single is a worm hotel big enough for an average family and can hold up to 150 L of organic material / compost. After a start up period of approximately 6 to 8 months the compost can be harvested every other month. The compost will be harvested by opening the door on the bottom and remove the plastic container. The compost is left longer on the bottom to allow the worms to move up before we harvest the compost. The vermicompost will be more compact and will dry as soon as the cardboard on the bottom is removed.

DIY WºRM Single in the garden.
With a small garden rake or stick the vermicompost can be removed from below without disturbing the composting worms and the composting process inside the furniture.

Inside the WºRM the composting material is entirely surrounded by air and this allows for a good ventilation and enough oxygen to reach the composting material and composting worms.

For the frame and outside of the furniture it is best to choose a type of wood that is suitable for outdoor use without having to use chemical protection. The thick wood provides for some insulation and keeps rodents out, when the spaces in between the boards are kept at a minimal distance.

We have trialled the furniture in gardens with many rodents running about and have not found signs of any of them getting inside the furniture.

Garden on top.

Open the garden to enter organic waste.
The garden on top of the worm hotel has three functions. One is obvious; it gives a home to plants. Preferably useful plants as herbs to use in the kitchen or to assist with the composting inside. Also flowering plants for pollinators are nice to use in the garden. 

The second function is that of the opening for entering the organic waste. By sliding the garden away the WºRM opens in the front and allows for waste to be introduced. 'Green waste' is mixed with 'brown waste' such as cardboard or sawdust to make sure you get a good nitrogen/carbon balance inside. 

The third function is to help moderate temperatures inside the furniture. When it's hot outside the evaporating water in the garden helps to cool the inside. When freezing outside the garden works as a buffer against the cold. 

The garden has an internal overflow to allow excess rainwater to leave the gardenbox and flow to the street. 



Natural materials.

To build the WºRM I have chosen as much as possible to use natural materials. You can make the building of the furniture even more sustainable if you look for second hand screws and plastic container.

I choose natural materials over plastic and steel because I like the way they look, they are easy to come by and easy to work with. Also when at the end of their lifespan these materials will become part of the cycle again and can be easily replaced by new parts. 

As material I choose Douglas wood and Bamboo (on the inside). The material directly in contact with the composting material however should not be natural. If this would be natural it would decompose rapidly and the compost would fall out. So for the inner shell I chose to use Anti Root Cloth made of food grade plastic. Also the container on the bottom is made of plastic as this needs to be able to hold liquids if they leach out of the compost. 

The gardenbox on top can be made from normal plywood and be covered with EPDM or other material used for ponds. In this manual I chose a plywood that is waterproof and will last a long while. 


Fill the garden with ecologically produced potting soil
or with your own made pottingsoil

The DIY WºRM Manual uses the metric system.

Since I life in The Netherlands I have used materials that I find here. The sizes and shapes of materials might differ where you are. All sizes as mentioned in the manual are in cm's and mm's so if you would want to use the manual be sure you know how to convert measurements to a scale you can work with. It might be necessary that you adjust the measurement if you need to use materials that differ in size. 

The drawings we included are quite clear (as so I hope) and should make it fairly easy to build the furniture if you have some experience in carpentry. If you have none whatsoever it's a great moment to start learning;)! Or else please ask help to someone that does know how to work with wood. 

How to get your copy of the first Le Compostier DIY Manual?

The price of the booklet is € 25,- excluding shipping costs (for shipment costs see details below).

The manual is now available in printed version in Dutch and in English. You can order your copy by sending an email to: info@compostier.nl with your name and postal address or by making a direct payment for the booklet + shipping costs to:

Rowin Snijder
Bank Account number: NL50 TRIO 0197 7640 96
For international payments BIC: TRIONL2U

Please mention with your payment:
WºRM Single - english / nederlands - your postal address / jouw post adres. 

shippingcosts: 
€ 3,00 inside the Netherlands
€ 4,70 outside the Netherlands

(the booklet will be shipped to you on the first monday after receiving your payment.)

Why a printed version of the manual and not digital?

In times where everything is turned into digital and virtual realities I have chosen to make a printed version first. I read best myself from a printed manual or book. Mostly I chose a printed version because I think the worm hotels are all about getting back into balance with our natural and physical environment. Therefor I wanted to offer something that can be held in your hands and where pages are turned for each new step. 

What has a bigger impact on the environment? Print on paper or digital storage ? I am not sure. When you use your WºRM I hope any damage to the environment done by printing and sending you this booklet will be counterbalanced and that you will grow many plants and trees using your own homemade vermicompost and make your own world a little greener in the process. 



First finished WºRM Single made
by Johan with the use of
the DIY Manual by Le Compostier







WºRM Single 
Manual + Building Plans for Le Compostier's 1st DIY Worm Hotel

Worm Hotel Design by Rowin Snijder
Original text & translation by Rowin Snijder
3d drawings & graphic design by Ioanna Siviti

ISBN: 9789492992017

a publication of Le Compostier Publishing. 
All rights reserved. 




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