Thrift Store Sewer Lair Expansion Diorama

VAPOR SMOOTHED BY HAND FOR A PREMIUM COLLECTOR DISPLAY FINISH

Petranek Designs brings you the Thrift Store Sewer Lair Expansion Diorama — a handcrafted, small-batch display expansion designed for adult collectors who want to build out a larger, more detailed sewer-and-street-level display.

This custom 3D-printed diorama combines an underground sewer lair with a two-story street-level thrift store building inspired by classic mutant turtle cartoons, comics, arcade-era environments, and vintage sewer-display nostalgia. It is designed to connect with compatible sewer lair displays using the connection-point version you select at checkout.

Each set is printed, finished, vapor-smoothed, test-fit, and packed by hand by Petranek Designs.

Choose the Correct Connection Point

This listing has two connection-point options:

1989 Original Playset Connection Point
2025 Reissue Connection Point

The original 1989 sewer lair and the 2025 reissue do not use the exact same connection point. Please choose the version that matches your display before ordering.

Not sure which version you have? Please contact Petranek Designs before checkout.

Why Collectors Love It

• Expands your compatible sewer lair display with a detailed underground and street-level scene
• Two-story thrift store building inspired by April O’Neil’s apartment and antique-store-style street-level environments
• Fire escape detail adds vertical display interest and classic city-building character
• Underground sewer lair with visual inspiration from classic comics, cartoons, and vintage video game sewer environments
• Garbage dumpster with working lid
• Hidden trap-door display feature activated by the ooze pin
• Includes ooze canister, spilled ooze prop, and custom sticker sheets
• Custom sticker sheets add extra sewer detail, including mousers, rats, grime, and display accents
• Vapor-smoothed by hand to reduce visible layer lines and create a more finished collector-piece appearance
• Made in small batches, not mass produced

What’s Included

This listing includes:

• Thrift store street-level diorama section
• Underground sewer lair expansion section
• Fire escape detail
• Garbage dumpster with working lid
• Hidden trap-door display feature
• Ooze canister prop
• Spilled ooze prop
• Custom sticker sheets
• Assembly instructions

Dimensions

Approximate dimensions:

• Expansion Room/Base: 13 inches wide, 8.5 inches tall, 9 inches deep
• Expansion Room/Base with stairs and ooze that overlap Playmates Sewer Lair: approximately 15 inches wide
• Thrift Store Building: approximately 16 inches tall
• Total stacked height: approximately 24.5 inches tall when the building is displayed on top of the expansion room/base

Dimensions are approximate and may vary slightly due to the handmade 3D-printing and finishing process. Assembly is required.

Materials and Finish

This is a 3D-printed collector display piece made from filament and post-processed by hand.

Parts are trimmed, cleaned, and vapor-smoothed to greatly reduce the appearance of layer lines and rough edges. Because each item is made and finished by hand, small variations from the photos are normal. Minor surface variation, small rough edges, and slight finish differences may be present.

Collector Display Notice

This product is intended for adult collectors as a display diorama only. It is not a toy and is not intended for children.

Keep away from young children.

Recommended for adult collectors and display use only.

Made in Small Batches

Each Thrift Store Sewer Lair Expansion Diorama is custom-designed, 3D printed, hand-finished, and packed by Petranek Designs. These are made in small batches, so availability may be limited.

Quality takes time — orders typically ship in about 2 weeks.