Quick Tips with Gary Shudgold, MMR Scratchbuilding Bits and Pieces Computer Boards as background equipment – July 27, 2021 Using dental material to produce castings for you model railroad – August 3, 2022 Categories: Quick TipsScratcbuild Tags: Gary Shudgold Jim Allen Jim Allen is a long time O Scale 2-railer and collector. He is a Jack of all trades but a master of none! Lets go!