Here's a little video on how to make cheap flypaper traps. White flies are a big nuisance in greenhouses!
Sunday, May 22, 2011
Wednesday, May 4, 2011
This is a sequencing / indexing valve that I designed a couple of years ago. This uses a pinching mechanism to stop the flow of water. It is able to pass solids and keep operating if there is a clog elsewhere in the plumbing. I decided that it would be too expensive to develop and would show everyone how it works.