The Gunpla Panel Lining: Gunpla's Guide to Markers and Paints | One Map by FROM JAPAN
DuelMasterNG Gunpla: Tutorial - Panel Lining with Gold/Silver/Metallic Colors
How To Panel Line a Gundam Model Using a Gundam Marker Pen – Gundam Express Australia
Gundam Marker Extra Thin Type for Panel Lines Set (Renewal) | HLJ.com
G Project - Panel lining! An easy yet effective way to give your models that extra bit of flair. Here are some of the more common options: 1) Panel- lining Gundam Marker (スミいれ用)-