Building Secret Painting Entrances Without Random Placement
Secret passages hidden behind paintings are a classic Minecraft build trick, because players can walk straight through a painting as long as the blocks behind it are passable. Normally, setting one up is tedious because random placement constantly spawns small paintings that fail to cover the doorway. Custom Paintings Mod removes the guesswork.
Setting Up the Doorway Support
Paintings need backing support so they do not break when you walk through an open gap.
1. Carve a doorway into a flat wall.
2. Place wooden signs on the inside edges of the doorframe, or install a door or fence gates inside the gap and leave them swung open.
3. Make sure the flat wall around the opening is clear of torches and protruding blocks.
Covering the Opening via the GUI
Hold a crafted painting, hold sneak if you are aiming directly at a sign or open gate, and right-click the block supporting the frame. When the custom GUI opens, select a painting large enough to span the entire doorway opening. Because you only have to place the item once, you avoid accidentally breaking your signs while punching unwanted random paintings off the wall.