• 🛠️🎨 Bench-tested “Surface Grime” Oil Wash Tuned for Dunkelgelb (RAL 7028) using Abteilung 502 Oil Colours
  • Measuring Oil Paint by Drop Equivalents using the Tamiya Stainless Steel Paint Stirrer
  • Abteilung 502 — Coal‑Tar Creosote Ties & Dust Washes