spring

  1. A

    Help, please: Help identifying 901 spring

    Hi all. Time ago I bought second hand 901 handpiece. Inside box comes a bag with 5 QC holders and one spring. The question about these spring is: could be the 004-430 (fine work spring) described in the 901 part list? These spring is not included in the 901 default packs. In the other hand...
  2. Chujybear

    Two questions: optimum steel, and leaf spring oil harden?

    Hello. I'm sure my first question has been covered adnausium, but I haven't found the particular answer in the archives. But please forgive me. 1• I would like to solicit opinions on the best carbon steel for a knife ( in this case I would be making a kitchen knife) that results in a...
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