My lathe came with a Jacobs 1A Chuck but the chuck key is missing. Is it a K1 key? Also, these keys seem to cost almost as much as a complete chuck and key! Am I looking in the wrong places?
According to my 2008 edition of Cromwell Tools catalogue, the K1 key suits all Jacobs series 1 chucks and is Cromwells reference number S7 . The.ir order code is KEN-441-0140K , and was priced at £1.76 +VAT in 2008.