Blender addon to create tunnels of random angled grid lines
Download the zip and install as an addon in Blender 2.80 or higher. RandoGrid settings can be found in the side panel of the 3D viewport.
Number of lines: Number of lines to generate in the grid block
Line Steps (Length): Number of angled steps each line gets in the block
Start Offset: Units to randomly offset the starting position of each line
Width: Random starting offset over the width for each line, also used as constraint when "Limit Width" is active
Height: Random starting offset over the height for each line, also used as constraint when "Limit Height" is active
Limit Width: Limit width of lines to starting width, ignored if step size is larger than width
Limit Width: Limit height of lines to starting width, ignored if step size is larger than height
Length / Width / Height Step Growth: Set the minimum and maximum step size in each direction
Make Curve: Convert the final result from mesh eges to a beveled curve
