Spice up your next house party with this diy foam machine. [Stephen Martin] posted his PDF plans for version 1 and version 2 of the device. It seems the deciding factor on the machine is the type of fabric screen used to create the suds from a bubble bath liquid. This is the reason he’s got two versions. They share a lot of the same components (especially the expensive ones) but the first version is easy to swap out different fabrics and the second is a more permanent installation. In the end, we’re looking at a sump pump feeding foam to a fabric net that is attached to a blower. This will be a nice addition to that fog machine you built last fall.