---
title: "plastic seat shell 3d model"
description: "plastic seat shell 3d model is a 3D printable model (hobby & gaming) by Kyle on the SpeakCAD marketplace, 350 × 379 × 277 mm: STL and 3MF, free, editable with AI in the browser before you print it."
canonical: https://speakcad.com/marketplace/plastic-seat-shell-3d-model-1cab31
published: 2026-10-23
updated: 2026-10-23
publisher: SpeakCAD
---

# plastic seat shell 3d model

> plastic seat shell 3d model is a 3D printable model (hobby & gaming) by Kyle on the SpeakCAD marketplace, 350 × 379 × 277 mm: STL and 3MF, free, editable with AI in the browser before you print it.

## About this model

This is a contoured seat shell with four mounting slots for a 160 × 80 mm bolt pattern. The shell measures 350 × 379 × 277 mm and features a recessed seat surface with integral backrest and side supports. Four slots (6.6 mm wide) on the underside accommodate M6 bolts or equivalent fasteners at the corners. Print with the bottom flat on the bed, as oriented; no supports needed.

## Facts

- Category: Hobby & gaming
- Maker: Kyle
- Size: 350 × 379 × 277 mm
- Volume: 1682.9 cm³
- Formats: STL, 3MF (G-code sliced for 380+ printers in the editor)
- Price: free
- Editable: yes, change any dimension with the AI or by typing a number in the viewer before printing
- Licence: personal use; Kyle keeps ownership of the design

## Get it

- Get it in SpeakCAD: https://app.speakcad.com/market/plastic-seat-shell-3d-model-1cab31
- No printer? Order it printed and delivered: https://app.speakcad.com/print?listing=plastic-seat-shell-3d-model-1cab31
- More models: https://speakcad.com/marketplace?category=hobby-gaming

## About SpeakCAD

SpeakCAD is the most intuitive CAD for 3D printing, made for people who own a 3D printer and need a part that fits something they have: tap a face and type a size to shape it with simple tools, or describe it to the AI, on your phone or computer, and download a print-ready STL, 3MF or G-code sliced for your printer.

SpeakCAD works inside ChatGPT and Claude as a plugin (an MCP server): ask the assistant for a part with its measurements and SpeakCAD's own CAD AI designs it, shows it in 3D in the chat and hands over a print-ready STL, 3MF or G-code sliced for your printer.

- Live demo, no account: https://speakcad.com/demo
- In ChatGPT, Claude and other MCP clients: https://speakcad.com/chatgpt-plugin, https://speakcad.com/claude-connector, https://speakcad.com/mcp-server
- Pricing: https://speakcad.com/pricing
- FAQ: https://speakcad.com/faq
- Site index for AI assistants: https://speakcad.com/llms.txt