Creality 3D printer: https://goo.gl/wXrkMi
Download Banggood App and get 10%off: https://goo.gl/ydu2YC
Filament https://3dprintz.co.uk/collections/pla
Bromsgrove greensand https://www.artisanfoundry.co.uk/product_info.php?products_id=38&osCsid=gvlciach0vgf7kgl0r34e0tqj7
Investment plaster https://www.artisanfoundry.co.uk/product_info.php?products_id=330

This is to be my extruder body to replace the printed one. Extra material was added to the open source Prusa file to allow for machining and shrinkage. Holes were deleted and will be drilled in the casting.
As the pattern has a flat bottom greensand was used for the cope.