This is a draft file to demonstrate in CAD, the design suggested towards the end of this video: https://www.youtube.com/watch?v=geAjeDONnH8 For publication on https://recyclopaedia.org.au/index.php?title=Lucky_Hill_Farm_Biogas_Digester More information about the design can be found at the above links. This is not a model for 3D printing.
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