Four 'easy' steps to refill a ballpoint pen: 1️⃣ Grab a pair of pliers to remove the top of the pen 2️⃣ Source some oil-based pen ink (usually sold in quantities of 20 kilos or more) 3️⃣ Carefully use a syringe to inject the ink into the pen 4️⃣ Grab your centrifuge to spin out any air bubbles …or you could just buy a refillable pen from Tom's Studio? | Tom's Studio