David Cameron wrote:I have a treadle grinder/polisher made in 1895. I used this as a silversmith and as a knife-maker for decades. It was perfect for the decade we were off-grid and gives better control than electric grinder/polishers. The leather belts need replacing now but otherwise I expect this machine could go on working for centuries more.
Josephine Howland wrote:Could this replace the need for an electric pump? Any mechanical types have ideas?