Oct 07, 2013· After crushing the first oil filter, went back and tapped two 1/4" - 20 tpi holes into the top plate. Bolts allow me to pull it back out! :flipoff2: Still need to add a drain tube and collection, but did the trick nicely. $20 of scrap metal. Yes, way overkill! Filters had been left to drain for at least good 24 hours prior to crushing.