SoulBuilt MARKSMITH is the world's first Titanium Bolt Action, Permanent Marker. Launched on Kickstarter in 2020, it's crafted from the toughest grade 5 titanium. The bolt action mechanism is fun to fidget with and guarantees that the marker will only extend when you want it to. WHAT OWNERS ARE SAYING INSTRUCTIONS The MARKSMITH can be refilled in 3 different ways. The easiest and recommended method to refill is to purchase the refill cartridges from us. How To Refill With Cartridges Purchased From Us (SOUL BUILT) How To Refill With A Sharpie Retractable Fine Point Marker The second method to refill the MARKSMITH is to purchase a Sharpie Retractable Fine permanent marker, break open the shell to reveal the cartridge, and cut off the narrow tail. How To Refill The Cartridge With Permanent Marker Ink The final refill method allows you to reuse the cartridges several times by...