A recent addition to mountain bikes is the dropper seat post. Inspired by the panoply of possibilities, [kane components] set forth to create such a home-built dropper post. Inspired by woodworking bar clamps, [kane’s] design utilizing angled plates binding against a rail inside the dropper post. To fit everything together, the lower post got thread milled so the entire mechanism can be threaded into the seat post as a replaceable cartridge. To our surprise, this isn’t the first dropper post hack we have come across.