How do I print it at full size?

Scale it in the print export to real size, then use Split for printing to cut it into parts that fit your bed and glue them.

Will it be strong enough?

The design avoids thin parts. For long props, print with 3+ walls and run a metal rod or dowel through the handle.

Yes. Pick Grey primer for a paint-ready look, then sand, fill and paint as usual.

3D Printing template · free to try

Cosplay Prop Generator

Name: Cosplay Prop: before and after
Uploaded: 2026-10-25
Duration: 4 s
Description: Describe a prop and get it ready to print at full size

Describe a prop and get it ready to print at full size

Try it free

Free to try · takes about 2–3 min

Describe it in one sentence. About 2–3 min later you download a full-size cosplay prop as STL or 3MF, ready to print. No 3D skills needed.

Try it

Make full-size cosplay prop

Describe a prop and get it ready to print at full size. The prompts and settings are already done for you.

Example 1 of 4

Describe your prop0/200

Style

ConditionOptionalNew

Quality

~2–3 min · robust, chunky design · STL & 3MF · free to try

Examples

Made with this template

The card in the corner shows what went in.

Lion crest shield prop — A knight's round shield with a lion crest

Spellbook prop in primer — A spellbook with a skull clasp and metal corners

Viking axe prop — A viking battle axe with a runed head

Each example is an actual run of this template at Standard quality, made from a typed idea or a sketch.

How it works

From idea to file in about 2–3 min

Type what you want, then wait while 2 AI steps run. Nothing to set up.

Typed
“A steampunk ray gun with brass coils”
1
You
You describe it
Or upload a sketch or reference
Image Studio2
AI
AI draws your idea
Image Studio draws one prop upright with thick grips and edges, so it holds up in hand and on the print bed.
Image to 3D3
AI
AI builds it in 3D
Image to 3D (Prism 3.1) builds the prop with Fast textures and Standard mesh quality.
STL 3MF OBJ
4
Yours
You download the file
As STL, 3MF or OBJ. You can use it however you like.

After the download

Print it at home or order it

Open the STL in your slicer, or upload it to a print service if you don't have a printer.

Print it at home

Any FDM or resin printer works. Open the file in your slicer and press print.

No printer? Order it

Upload the STL to an online print service or a local print shop and get it delivered.

Give it as a gift

Birthdays, weddings, a thank-you for a teacher. Nobody else will have the same one.

Paint it

Print in grey and paint it, or print in colour if your printer can.

Behind the scenes

How this template works

Props have to survive a con. Image Studio designs yours chunky and robust, with no paper-thin edges, then Image to 3D builds it so you can scale it to real size.

1
Step 1 · Image Studio
Design the prop
Image Studio draws one prop upright with thick grips and edges, so it holds up in hand and on the print bed.
Nano Banana 2.1 (text) or GPT Image 2.5 Flare (sketch)
Open Image Studio
2
Step 2 · Image to 3D
Build the 3D model
Image to 3D (Prism 3.1) builds the prop with Fast textures and Standard mesh quality.
Prism 3.1 · Fast textures · Standard mesh
Open Image to 3D

Do it yourself for more control

Scale it to real size in the print export, then use Split for printing to cut it into bed-sized parts.
Add a metal rod or dowel through long props like axes and staffs for strength.
Sand, prime and paint; Grey primer shows you the shape before you paint.

New here

What is 3D AI Studio?

3D AI Studio is a web app that makes 3D models, images and sounds with AI. It runs in your browser, so there is nothing to install.

A template is a saved recipe. It runs a fixed set of AI tools with settings we've already tested, so all you add is a photo or a sentence.

Runs in your browserPhone or computer

Inside this template

Step 1
Image Studio
Draws a picture from a sentence or a sketch.
Step 2
Image to 3D
Turns a single picture into a textured 3D model.

Before you start

What you need

One sentence or a sketch
No prompt skills needed
3D software or skills
Not needed. It all happens in the browser
A 3D printer
Optional. You can order the print online
A free account
Sign up with Google or email

Free to try

PaintedDefault

realistically painted materials with weathering, metal, wood and leather where they belong.

Grey primer

unpainted, uniform matte grey primer, ready to sand and paint.

Your download

The files you get

STLThe standard file for 3D printers.

Open it in a slicer such as Bambu Studio, PrusaSlicer or Cura, then press print.

3MFA newer print file that also keeps size and colours.

Best for Bambu Lab and Prusa printers.

OBJA universal 3D file with its colour texture.

Opens in Blender and almost every 3D app.

Best results

How to describe it

Name the prop and its materials: "a viking axe with a runed iron head and a leather grip".
Handheld props print best; for helmets and armour, check the size against your head.
A sketch or a screenshot of your design works too.

Good to know: Very long, thin props need splitting and a support rod; check local event rules for prop weapons.

MCP connector

Run this template from Claude, ChatGPT or Cursor

Connect the 3D AI Studio MCP to your AI assistant and paste the brief into the chat. It runs the same steps with the same prompts and settings, shows you the result in the conversation and saves it to your library.

Style

Condition

Connect the MCP once in your account settings. It's included in every paid plan.
Copy the brief and swap the example in the first line for your own.
Paste it into a new chat. Your assistant runs every step and shows you each result.

Tools it calls

generate_image_nano_2_1upload_imageedit_image_gptgenerate_prism_3_1convert_modelget_generationshow_generation

What the MCP connector does Setup guides

Chat brief · Cosplay Prop

Use the 3D AI Studio MCP to run the "Cosplay Prop" template (https://www.3daistudio.com/templates/cosplay-prop-generator) for me.

My idea: A steampunk ray gun with brass coils
Style: Painted
Condition: New

Follow these steps in order. The prompts and settings are the template's own, so use them word for word and only put my idea where it says {MY IDEA}.

1. Design the prop
Call generate_image_nano_2_1 with aspect_ratio "1:1", resolution "1K", output_format "png" and this prompt:
"""
Prop: {MY IDEA}. One single handheld cosplay prop only, designed to be 3D printed at real-life size: a chunky, robust design with thick grips and edges and no paper-thin blades or spikes, upright in a clear three-quarter front view, the entire prop visible with generous empty margin, no hands, no stand, no display case. Isolated on a seamless pure white (#FFFFFF) background, soft even studio lighting, no shadows on the background, no text. Finish: realistically painted materials with weathering, metal, wood and leather where they belong.
"""
If I want to start from a sketch or reference image instead, call upload_image so I can hand it over, then call edit_image_gpt with the upload in images, quality "low", output_format "png" and this prompt:
"""
Turn the prop in the reference image into a 3D printable cosplay prop, keeping its design and proportions. One single handheld cosplay prop only, designed to be 3D printed at real-life size: a chunky, robust design with thick grips and edges and no paper-thin blades or spikes, upright in a clear three-quarter front view, the entire prop visible with generous empty margin, no hands, no stand, no display case. Isolated on a seamless pure white (#FFFFFF) background, soft even studio lighting, no shadows on the background, no text. Finish: realistically painted materials with weathering, metal, wood and leather where they belong.
"""

2. Build the 3D model
Call generate_prism_3_1 with the task_id of the image from step 1 in images, texture_model "3.5", texture_quality "fast", geometry_quality "standard", pbr false.

3. Export
Export it for printing: call convert_model on the 3D model with output_format "3mf" (or "stl" if I ask for it), plus max_size and unit "cm" if I gave you a print size.

After each generation call, keep polling get_generation with its task_id until it completes, then show me the result with show_generation before you start the next step.

Or automate it with the API

The same tools are available through the 3D AI Studio API. Call them from your own code to make hundreds at once, build them into your app or run them in your pipeline.

API docs Get an API key

Cosplay Prop: questions & answers

3D AI Studio is a web app that makes 3D models, images and sounds with AI. It runs in your browser, so there is nothing to install. A template is a saved recipe. It runs a fixed set of AI tools with settings we've already tested, so all you add is a photo or a sentence.