Ultrasonic Cleaners and the Passivation Process

from High Carbon · host Blades, craftsmanship, creativity, and laughs!

Pauli breaks down his new passivation process for sandblasted stainless steel blades, covering why blasting creates rust problems and how a citric acid bath fixes it. He also shares a cheap DIY version any maker can try at home. Albert talks through the painful story of a hook hollow ground chef knife with solid copper cladding that delaminated right before the finish line. The crew also gets into custom screws, carbide end mills, and the discovery that Austria is sitting on one of Europe's largest tungsten deposits which leads to some questionable field trip planning.Next week: award-winning Austrian bladesmith Marco Gadavics joins the show.Help support us on Patreon! Members get access to our "Low Carbon episodes" Raw, uncut, and full of behind the scene conversations about anything and everything under the sun. https://www.patreon.com/c/HighCarbonGet all your heat treating supplies and even a custom oven at MiniHell.eu, Europe’s number one shop for all your heat treating needs! Special thanks to all our paid Patreon members: Alex Greenaway → https://www.instagram.com/tretten_knive/Baker Forge & Tool → https://www.instagram.com/bakerforge/Benjamin Kamon → https://www.instagram.com/kamon_knives/BryanHunt.hiddenroseforge → https://www.instagram.com/bryanhunt.hiddenroseforge/Chee d'Argent → https://www.instagram.com/chee.dargent/christoph stiegler → https://www.instagram.com/kanjiknives/Cochrane_knives → https://www.instagram.com/cochrane.knives/Danielius Seibakas → https://www.instagram.com/daniseimadeknives/Dominic Binkert → https://www.instagram.com/db__blades/Erlundamboss → https://www.instagram.com/erlundamboss/Fabian Scherl → https://www.instagram.com/scherlfirearts/Fagerlund.Bladesmith → https://www.instagram.com/fagerlund.bladesmith/Fingal Ferguson → https://www.instagram.com/fingalferguson/Friedrich FlaigGabe Fletcher → https://www.instagram.com/anchorageforge/Jan Bikker → https://www.instagram.com/jan_bikker/Johannes Hecker → https://www.instagram.com/jo__hecker/Johannes HofeggerJeroen Knippenberg → https://www.instagram.com/knippenbergknives/KraftyMan Forge → https://www.instagram.com/kraftymanforge/Kurt Glatt → https://www.instagram.com/glatt_knives/Njord Artisan → https://www.instagram.com/njord.artisan/Oliver Tobin → https://www.instagram.com/tobinmachines/Paul Baleta → https://www.instagram.com/baletahandmade/Richard Schultz → https://www.instagram.com/richardschultz_knives/Roy Rutten → https://www.instagram.com/royrutten87/The hustle and grind podcast → https://www.instagram.com/hustleandgrindpodcast/Travis Haines → https://www.instagram.com/birdforge/Viperhunter → https://www.instagram.com/viperhunter86/Jonas Thorsson → https://www.instagram.com/jonasthorsson/Ian Walker → https://www.instagram.com/walkerknives/Jonas Johnsson → https://www.instagram.com/isasmedjan/Jeremy Balbaugh → https://www.instagram.com/419forging/Todd Harrington → https://www.instagram.com/thblades/

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This episode was published on June 25, 2026.

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