Economical Dot-Peen for industrial markingPublished by Marc Steele on February 4, 2021February 4, 2021 Categories: Dot-PeenDot-Peen MachinesHandy AndyHandy Andy FAQ Tags: Columbia Marking ToolsDot-peen markingHandy Andy XIndustrial Part Marking Marc Steele Marc has been in the marking business for over 15 years. He provides technical assistance through emails and online chat.