Blender 2.79 Archives

Sometimes you want to use the same material on another object and only make a small change to it. Rather than this change affecting all linked objects, we need a new material with all the settings of the old material.

For example, in the above image I’ve used three chocolate shaders. They were all the same, except for the colour of the chocolate. I started with milk chocolate, then changed the colour for the dark and white chocolates.

There is an easy way to do this in Blender, albeit not entirely obvious at first sight. Let me show you how to copy and paste materials in this article.

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Material Zones are – as the name suggests – different parts of a single object that can each be assigned a shader. This sounds more complicated than it actually is.

In a nutshell, you can tell an object that its top should look different than its bottom at render time – figuratively speaking.

Such zones can be assigned only at the modelling level, so that each surface can be described differently by your rendering app. Here’s how to assign these Material Zones in Blender.

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Blender allows us to sculpt with textures to add fine detail to each brush stroke. In ZBrush this feature is called sculpting with alphas, but the principle is a little easier to understand in Blender (at least for me). Here’s how to add a texture to a sculpt brush in Blender. 

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The Screw Modifier in Blender is very straightforward to use – if you know how. I tried to figure it out by myself which proved impossible. I guess unintuitive is the word I’m looking for. Reading the manual gives us an explanation like this:

The profile should be properly aligned to the cardinal direction of the object rather than to the screw axis.

Yes… this means what exactly? Thick people shouldn’t use this tool? Thankfully it’s far simpler than it sounds – let me show you how. 

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Hexagon had a nice feature called “copy on support”. With it we can create duplicates of
an object along a path, something that comes in handy when creating a ladder or a necklace. I wondered if Blender too had such a feature, and of course it has – even though it’s perhaps a little bit unintuitive (read: impossible) to figure out. Pretty much like the rest of Blender.

So here’s what we have to do in order to duplicate an object along a path in Blender, where this technique is called DupliFrames. Don’t worry about looking it up in the plethora of menus – it’s not to be found anywhere.

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Proportional Editing is what Blender calls a tool with which you can modify part of your object with an area of influence around your selection. Other apps would call this Soft Selections. The principle is the same: pick a selection, and rather than just move the selection, you have influence over an area of gradual falloff.

In the above GIF I’ve selected a single face in the middle of a grid. Without proportional editing, only the face is moved. With proportional editing, the whole area around it is moved. Let’s take a look at how to use this tool.

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On standard Mac keyboards and laptops, some of the handy Blender shortcuts are hard to find. That’s because many of them rely on us having a full-size keyboard or an additional Number Pad. While those aren’t expensive, some of us just don’t want to use another gadget that clutters our desks (be that at home or in our coffee shop).

One of the many useful shortcuts in Blender is View Selected. It frames the selected object(s) and lets us tumble the camera around them. View Selected is accessible from the View menu, and by default it’s mapped to NUMPAD + . (the period key on the number pad). I do this a lot, so I really want this as a usable shortcut on my keyboard. But the default doesn’t work, because I don’t have a  Number Pad.

There is an option under File – User Preferences that lets users like me emulate one, and it works with most keyboard shortcuts – but NOT for the View Selected shortcut. I have no idea why. Fact.

So what can we do, if we don’t want to invest into more hardware? Re-mapping the keyboard shortcut to something usable springs to mind. Thankfully, Blender is endlessly customisable. Let’s see how we can assign our own shortcut to the View Selected option.

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Sometimes 3D objects are created with duplicate vertices that should be in the same place. Imagine two sides of a cube: ideally they should share the same points, but when you place two planes closely next to each other, they’re just two planes and not one object.

For that we need to “weld” vertices together, an expression shared by pretty much every 3D package – except for Blender, where “being different” is just as important as “being complicated”. In Blender, welding is called “removing doubles”.

Let me show you how to do this – no matter what you want to call it.

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