Photoshop tutorial: 3D printing from Photoshop CC

Using the new tools added in Photoshop CC's latest update in 2014, here's how to model a toy entirely in Photoshop, then print it using a 3D printer.

Intro


Suddenly, everything’s going three-dimensional. 3D printers were once the exclusive preserve of high-end print shops, which would charge design agencies a fortune to produce prototypes of upcoming products. But you can now buy a 3D printer from Maplin for £700, which will enable you to print your models in your own studio. 

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This lets you see how an object, such as a hip designer toy, will appear before a full run is produced. Or you could produce your own limited runs of a special edition toy, some artfully designed 3D type or whatever your imagination can conceive.

3D printing isn’t always straightforward though, as it takes a while to install, let alone master, the various programs you’ll need. But with some time and effort it can be done. 

Creating your model doesn’t necessarily mean using 3D or CAD software. You can use Photoshop CC – or if you use Photoshop CS6 Extended, follow our 3D Printing from Photoshop CS6 tutorial.

Photoshop’s 3D modelling options were vastly improved in CS6 with more intuitive onscreen controls that give even the least techy artist the ability to produce models from flat artwork, photographs, or their imagination – and then enhanced further in Photoshop CC.

Photoshop may be limited as a modelling program, but it’s a lot easier than learning about NURBs and subdivision surfaces. And once you master 3D in Adobe’s tool, it’s a lot easier to move on to higher-end 3D work in tools such as Cinema 4D or Maya. 

Here, we’ll see how a toy designer might use the technology to model a figure in Photoshop, and then print out a physical version of it. You’ll learn the creative and technical process – and some of the restrictions placed on your design by the 3D printing process. Steve has used an Ultimaker 2 3D printer for this tutorial, but the process is much the same on any desktop 3D printer.

He’s also provided the 3D model in the project files for reference. 

Time to complete

2 hours modelling and preparing, up to 4 hours printing

Tools

Photoshop CC

Project Files

Please visit the desktop site to download the project files.

Step 1

STEP 1

Begin by making a new document in Photoshop – 2,000 pixels square is a good size – and, on a new layer, draw your design. Since it will be printed layer-by-layer from the ground up, it’s important not to have any places where the machine will be printing on thin air: we couldn’t have the arms pointing down for this reason.

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Step 4

STEP 2

In the Cap section of the Properties panel, set the Inflate Angle to 90 degrees so it inflates at right angles from the sides. Then drag the Strength slider until the object looks rounded and three-dimensional.

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You can also inflate it by tapping the V key and dragging the head-up controls on the object itself.

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Step 5

STEP 3

The default behaviour is to inflate just the front side of the object. In the Properties panel, look for the Sides pop-up menu at the top, and change this to Front and Back. Now, the inflation will be mirrored. 

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The thicker the original drawing, the more inflated the object will be, which is why the body and head are thicker than the arms and legs.


Step 6

STEP 4

You need to make some solid feet for the figure to stand – it’s essential to have a large enough surface area that’s stuck to the base of the printing platform. As before, begin by drawing the outline of a shoe on a new layer.

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Step 7

STEP 5

Just like before, extrude the artwork to make a new 3D object. This time, though, you don’t want to reduce the Extrusion Depth: setting it to a low figure, such as 20, will give the shoe a flat sole on which to stand. Rotate the shoe 90 degrees on the X axis, using the Co-ordinates tab in the Properties panel, so it sits flat on the ground.

See also: 86 Best Photoshop tutorials

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Step 8

STEP 6

Use the Inflate controls once again to bring the shoe to life. This time, only the Front should be inflated.

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Step 9

STEP 7

Duplicate the 3D shoe layer, then select all three layers and choose Merge 3D Layers from the 3D menu. They’ll all be placed together, and you may get an orientation that’s as unfortunate as the one pictured here. It’s all a matter of chance.

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Step 10

STEP 8

You can select each shoe within the 3D panel or by clicking on it. Choose 3D > Snap Object to Ground Plane, and slide it sideways so it fits beneath the leg of the main figure. Repeat the process for the other shoe. Next, select Export 3D Layer from the pop-up menu in the 3D panel, and pick .obj as the file type.

See also: 86 Best Photoshop tutorials

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Step 11

STEP 9

If you’ve combined multiple models to create your scene, as I’ve done here, then you’ll need to join them together. Select 3d > Unify Scene for 3D Printing and – as the warning dialog tells you – the process will combine all the elements into a single mesh. From now on, the individual parts will no longer be editable.

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Step 12

STEP 10

Choose 3D Print Settings from the 3D menu to set up how your model will print. You can choose to print either to a local printer, if you have one connected, or to the Shapeways 3D-print-on-demand service. Shapeways is Adobe’s preferred print-on-demand partner, so you can use rivals such as Sculpteo.

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Here, you can also set to export the object to a printable STL file; you can also set the scale of the model, which up until this point has not been relevant. The scale is set in the Scene Volume controls, where Y is the height (and not Z, as is used in most 3D printers). You can also choose whether to add support structure at this point.


Step 13

STEP 11

Choose Print from the 3D menu, and Photoshop will go through the business of preparing the model. This entails repairing the meshes to make the model ‘watertight’, which pretty much guarantees it will be printable. If required, Photoshop will also add support where needed.

See also: 86 Best Photoshop tutorials

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Step 14

STEP 12

Here’s the finished file. Although I went to some lengths to make the model printable without support, Photoshop has decided that support is needed between the legs – and that’s why it has added the orange scaffolding that can be seen here.

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If you have a recommended 3D printer connected, press the Print button at this stage to produce the model. Otherwise, you’ll need to export the model as an STL file, and then use another application to slice it ready for printing.


Step 15

STEP 13

The GCode file is the file that your printer can read. Files can be printed directly from the computer, or – our preferred method – by putting them on an SD card and plugging them into the printer. 

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Step 16

STEP 14

The object prints from the ground up, layer by layer. You can see why we couldn’t have had the arms pointing down: it would have meant printing the hands with no support beneath them. If this is unavoidable, there are a couple of ways round this. You can either build supports into your model and cut/file them off afterwards (which can be time-consuming), or position exactly-sized blocks as support plinths (which can be fiddly to set up).

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So now your first prototype is complete, ready for refining, painting and/or accessorising.

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