---
title: "Bullet Passthrough Fidget"
description: "Bullet Passthrough Fidget is a 3D printable model (hobby & gaming) by dillie maker on the SpeakCAD marketplace, 42 × 17 × 77 mm: STL and 3MF, free, editable with AI in the browser before you print it."
canonical: https://speakcad.com/marketplace/bullet-passthrough-fidget-03fccd
published: 2026-10-31
updated: 2026-10-31
publisher: SpeakCAD
---

# Bullet Passthrough Fidget

> Bullet Passthrough Fidget is a 3D printable model (hobby & gaming) by dillie maker on the SpeakCAD marketplace, 42 × 17 × 77 mm: STL and 3MF, free, editable with AI in the browser before you print it.

## About this model

This fidget toy features two interlocking rocket-shaped pieces that slide past each other in a satisfying passthrough motion. The assembled model measures 77 mm tall, 17 mm wide, and 42 mm deep. Print flat without supports for best results.

## Facts

- Category: Hobby & gaming
- Maker: dillie maker
- Size: 42 × 17 × 77 mm
- Volume: 6.2 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; dillie maker keeps ownership of the design

## Get it

- Get it in SpeakCAD: https://app.speakcad.com/market/bullet-passthrough-fidget-03fccd
- No printer? Order it printed and delivered: https://app.speakcad.com/print?listing=bullet-passthrough-fidget-03fccd
- 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