# It's your turn to make it

![](https://developers.google.com/static/cardboard/images/manufacturers/hero-manufacturers.jpg)

When it is said that Cardboard is for everyone it means everyone, and that
includes manufacturers too. So the Cardboard viewer specification is open source
and ready for you to start building.

## Let's build something

### Production templates

The Manufacturer Kit has been updated for the new Cardboard, with more detailed
Cardboard-manufacturery goodness than ever before. The kit includes technical
specifications and drawings for lenses, conductive strips, die-cut lines, and
more, plus manufacturing tolerances and material specifications. And it even
includes guidance for quality assurance, first article inspections, and
production scaling procedures.

[DOWNLOAD THE KIT](https://developers.google.com/static/cardboard/pdfs/gc_manufacturers_kit.zip)

### Best practices

![](https://developers.google.com/static/cardboard/images/manufacturers/viewers.jpg)

Whether you're making ten Cardboard viewers or ten million, the details make the
experience. The Manufacturers Kit contains everything we've learned producing
Google Cardboard: our recommendations, usage and branding guidelines, and
specifications for each and every component, even the rubber band.
[BEST PRACTICES](https://gstatic.com/cardboard_assets/cardboard_manufacturers_kit.zip) [MANUFACTURERS HELP CENTER](https://support.google.com/cardboard/manufacturers)

### Viewer profile generator

![](https://developers.google.com/static/cardboard/images/manufacturers/wrench-mask.png)

Regardless of the size, shape, or material of your VR viewer, make sure it
provides a great experience. Use the Viewer Profile Generator to define your
device's key parameters. Add the QR code to your viewer so every Cardboard app
will automatically adapt to your viewer.

[VIEWER PROFILE GENERATOR](https://wwgc.firebaseapp.com/)

## Build It Yourself

To build your own viewer all you need are a few everyday items you can find in
your garage, online, or at your local hardware store: cardboard, lenses,
magnets, hook and loop fastener and a rubber band.

[DOWNLOAD INSTRUCTIONS](https://www.gstatic.com/cardboard_assets/wwgc_manufacturers_kit.zip)

![Build it Cardboard parts](https://developers.google.com/static/cardboard/images/manufacturers/buildit-cardboard-parts.jpg)

| Reference |   |
|---|---|
| 1. Cardboard | Corrugated cardboard sheet, preferably [E Flute](http://en.wikipedia.org/wiki/Corrugated_fiberboard#Manufacture_of_corrugated_board) (corrugated cardboard comes in a variety of thicknesses called "flutes"), available at many art supply stores and online . For best results, you should look for strong, thin cardboard (sturdy shoe box rather than moving box). Minimum size: 8.75in (22cm) by 22in (56cm), and 0.06in (1.5mm) thickness. Online sources [here](http://www.amazon.com/Kraft-Project-Sheet-Flute-32/dp/B008H06J2S) and [here](http://www.gaylord.com/Archival/Conservation-Supplies/Boards-%26-Paper/Gaylord%26%23174%3B-E-flute-Corrugated-Board-(10-Pack)/p/HYB00954). |
| 2. Lenses | This is the trickiest component. Lenses that have a 45mm focal distance might work. Biconvex lenses work best because they prevent distortion around the edges. |
| 3. Magnets | One neodymium ring magnet - like [this](https://www.google.com/search?q=3/4+in.+Neodymium+Rare-Earth+Magnet+Discs&oq=3/4+in.+Neodymium+Rare-Earth+Magnet+Discs&gs_lcrp=EgZjaHJvbWUyBggAEEUYOTIKCAEQABiABBiiBDIKCAIQABiABBiiBNIBBzkzMWowajeoAgCwAgA&sourceid=chrome&ie=UTF-8) - and one ceramic disk magnet - like [this](https://www.google.com/search?q=3/4+in+x+3/16+in+ceramic+disk+magnet&sca_esv=586941408&sxsrf=AM9HkKmrfWZXMYsaFqXY8JBfPSqpStnOuw:1701428082167&ei=crtpZaXrCdfM1sQPvJ6UgAc&ved=0ahUKEwil7MrDie6CAxVXppUCHTwPBXAQ4dUDCBA&uact=5&oq=3/4+in+x+3/16+in+ceramic+disk+magnet&gs_lp=Egxnd3Mtd2l6LXNlcnAiJDMvNCBpbiB4IDMvMTYgaW4gY2VyYW1pYyBkaXNrIG1hZ25ldDIIEAAYgAQYogRI2aACUJclWMKeAnAEeAGQAQCYAfABoAGPG6oBBjYuMjAuM7gBA8gBAPgBAfgBAsICChAAGEcY1gQYsAPCAgUQABiABMICAhAmwgIGEAAYFhgewgILEAAYgAQYigUYhgPCAgUQIRigAcICBBAhGBXCAggQIRgWGB4YHcICBxAhGKABGArCAgQQIRgK4gMEGAAgQYgGAZAGCA&sclient=gws-wiz-serp). Approximate size: 0.75in (19mm) diameter and 0.12in (3mm) thickness. |
| 4. Hook and loop fastener | Two strips of [regular strength adhesive-backed hook and loop fastener](http://www.amazon.com/Velcro-Brand-Sticky-Back-Pkg-Black/dp/B000TGSPV6). Approximate size: 0.75in (20mm) by 1.25in (30mm). |
| 5. Rubber band | One [rubber band](https://www.amazon.com/Alliance-24335-Sterling-Contains-Approx/dp/B001CXWP9S/ref=sr_1_8?crid=HV6OG27XY1ER&keywords=rubber%2Bband&qid=1701363596&sprefix=ruber%2Bband,aps,272&sr=8-8&th=1), to prevent the phone from sliding out. Minimum length of 3.2in (8cm). |
| 6. NFC tag (optional) | One [sticker NFC tag](https://www.google.com/search?q=Sticker+NFC+tag&sca_esv=586941408&sxsrf=AM9HkKmV9Czb6ek1Yz33XN3Ysj3wztUGqQ:1701428292739&ei=RLxpZcPTLLDd1sQP_u-amAE&ved=0ahUKEwjDhf-niu6CAxWwrpUCHf63BhMQ4dUDCBA&uact=5&oq=Sticker+NFC+tag&gs_lp=Egxnd3Mtd2l6LXNlcnAiD1N0aWNrZXIgTkZDIHRhZzIFEAAYgAQyBhAAGAgYHjIGEAAYCBgeMgYQABgIGB4yBhAAGAgYHjIGEAAYCBgeMgYQABgIGB4yCBAAGAgYHhgPMgYQABgIGB4yBhAAGAgYHkiVKlDjBFi9JnABeAGQAQCYAXOgAYYGqgEDNi4yuAEDyAEA-AEBwgIKEAAYRxjWBBiwA8ICCBAAGIAEGKIEwgIGEAAYBxgewgIIEAAYCBgHGB7CAgoQABgIGAcYHhgPwgIKEAAYBxgeGA8YCsICCBAAGAcYHhgP4gMEGAAgQYgGAZAGCA&sclient=gws-wiz-serp). Program it with the URL `cardboard://v1.0.0` |

## Make it yours

Whether you're buying a pre-assembled viewer or building one from scratch,
there's almost no limit to how creative you can get with Cardboard, as these
eye-catching examples prove.
- ![](https://developers.google.com/static/cardboard/images/manufacturers/carousel/cardboard-viewer-01.jpg)
- ![](https://developers.google.com/static/cardboard/images/manufacturers/carousel/cardboard-viewer-02.jpg)
- ![](https://developers.google.com/static/cardboard/images/manufacturers/carousel/cardboard-viewer-03.jpg)
- ![](https://developers.google.com/static/cardboard/images/manufacturers/carousel/cardboard-viewer-04.jpg)
- ![](https://developers.google.com/static/cardboard/images/manufacturers/carousel/cardboard-viewer-05.jpg)
- ![](https://developers.google.com/static/cardboard/images/manufacturers/carousel/cardboard-viewer-07.jpg)
- ![](https://developers.google.com/static/cardboard/images/manufacturers/carousel/cardboard-viewer-08.jpg)
- ![](https://developers.google.com/static/cardboard/images/manufacturers/carousel/cardboard-viewer-09.jpg)