Manhole & Drain Generator builds the cast iron under every street, right inside Blender: round sewer and storm covers, square and double triangular covers, multi-part duct covers, recessed covers filled with pavers or setts, checker plate hatches, concrete slabs, composite telecom covers, gas and water valve boxes, hydrant and electric box covers, road gully grates, bicycle-safe inlets, curved vane grates, catch basins, round yard drains, trench drains, slot drains, heel-guard grates and tree grates around a trunk.

Each fixture sits in its frame in a real piece of street: asphalt patch or concrete collar, a ring of setts, granite or concrete curbs with a gutter, a dropped kerb with tactile paving, curb openings and iron hoods, a wall with a downspout, puddles, fallen leaves and a painted "drains to river" stencil. Open the cover and look down the brick shaft with its step irons or ladder.

Cast patterns are endless: waffle grids, diamonds, studs, honeycomb, tread plate, rings, spokes, spirals, waves, wave scales, arc mazes and art covers with blossoms, leaves and fish in enamel colors, plus ring lettering, medallions and 17 generic emblems.

One click, a new cover
Press Surprise for a fresh random cover or drain, or pick a design from the picture gallery. Everything happens in the sidebar.

Endless cast patterns
Waffles, diamonds, honeycombs, rings, spirals, wave scales and art covers with enamel colors, lettering and emblems.

Grates & drains
Gully grates, bicycle-safe inlets, curb hoods, catch basins, trench and slot drains and tree grates, each in its street.

New to weathered
Polish, rust, dirt, rain, puddles and fallen leaves on sliders, on top of physically based materials.

Features

• 39 designs in five groups: manhole covers, art covers, valve and utility covers, grates and drains, street scenes
• Round, square, rectangular, hexagonal and double triangular covers, split into up to 24 parts
• 19 cast relief patterns, 14 grate opening styles and 6 recessed tray infills
• Main text, ring texts, small print, center medallions and enamel art colors
• Lifting keyholes, pick holes, slots, bolts and hinges; open covers lifted off, pushed aside or swung up on the hinge
• Shafts with step irons or ladders, gully pots with water, trench channels, tree pits with a trunk, valve risers
• Asphalt, concrete, paving and setts; patches, curbs, gutters, dropped kerbs, tactile paving, curb inlets, walls and downspouts
• Polish, rust, dirt, rain, paint, puddles, leaves and litter on sliders
• Real geometry or a flat cover with baked height, normal and mask maps (displacement ready)
• Surprise, Vary, Colors and Wear buttons, a picture gallery in the sidebar and a Shift+A menu
• Game-ready: real scale, origin on the road surface, UVs, bevels, named parts in their own collection, PBR materials with scanned CC0 textures, three detail levels, Make LODs and Convert to Mesh
• Works in Cycles and EEVEE

Requires Blender 4.2 or newer. Tested on Blender 4.2, 4.5 and 5.2 LTS.