Lesson video

Hello I'm Josh, your computing teacher, and welcome back to 3D modelling.

In the penultimate lesson of this unit we're going to look at the planning and design phase of creating a 3D model of a photo frame.

In order to do that you're going to need a pencil and some paper so make sure you have that ready.

You will also need your Tinkercad software login again so make sure you have your class code and nickname that you were using for lesson one through four.

If you've got those bits ready, make sure you're in a nice, quiet space, free from any distractions and then we can crack on with planning and designing our 3D models.

In lesson five then you are going to design a digital model by combining 3D objects.

In order to do that you are going to modify multiple 3D objects at one time.

You are going to choose which 3D objects you need to create your 3D model and you're going to plan your 3D model.

Before we jump into any of that design though we're just going to have a quick, brief recap on a few things that we can do within Tinkercad and then look at modifying multiple objects at the same time.

So the first thing I want you to think about is this.

I want you to pause the video and consider how I could change the shape on the right hand side of the screen so that it included a hole.

So pause the video, have a quick think, and resume the video when you're done.

Welcome back.

Hopefully you have remembered that in order to create a hole within that 3D object, we would need to use a placeholder.

So let's head into the Tinkercad software just to remind ourselves of how we do that.

Here we are then inside the Tinkercad software.

First thing I need to do if I'm going to create a hole is I need to drag another object to create that hole.

Now I want to make a cylindrical hole.

So I'm going to take a cylinder and I can make it a placeholder by clicking on the hole option up here.

If you're using a box or a cylinder to create your hole you could select a box or a cylinder up here which are already using that hole format.

What I need to do then is I just need to make sure that my hole is as tall or taller than my original object.

And then I need to select both those two objects, select the group icon up here and there you have it.

A hole in my object, so quick and easy.

Create a place holder, pop it where you want it inside your object, make sure that it is tall enough to make a complete hole if you want a complete hole or smaller if you want to make sure that it's not a complete hole all the way through, press the group button, and you have yourself an object with a hole.

So we've made our hole.

You can see on the object on the right, it has a hole in it.

What I'd like you to consider now is how we could modify that, so how could we make that hole larger and centre that hole within my object? Pause the video, have a think about that now.

Okay, so hopefully you have remembered that in order to change the holes that we create, we need to ungroup our items, our objects before we can do that.

So let's jump back into the Tinkercad software and just remind ourselves of that.

Here we go then, I have my hole inside my object as we've just made we're going to look at how we can modify that and as I mentioned to do that we need to ungroup our objects.

So we're going to select our grouped object down here.

We're going to click the ungroup button here which are the two shapes separate from each other and that's popped my placeholder back as a placeholder, it's no longer part of my object it's now a placeholder again.

So I can look at the top.

I can make it larger, pop it in the centre of my object.

Select it again, make sure I've selected both of them.

Click the group option again and now I have a new object which has a bigger, more central hole.

So we've just had a very brief recap on creating holes within our 3D objects and how we can modify those holes afterwards.

If we want to modify them, we have to ungroup them and then modify our placeholder and regroup them.

Sometimes, maybe I'll want to make changes to more than one object at a time.

So if we have multiple objects in our model we might want to make them bigger altogether or we might want to make them smaller altogether.

So let's head into the Tinkercad software now and we can have a look at how we do that together.

Here is my very basic model of a house then and we're going to look at modifying multiple 3D objects at one time.

You can see I've got a rectangular pyramid, I've got some cuboids on my object as well and a triangular prism down here.

Now what we're going to look at we're going to look at making my object bigger because if we look back on the home view you can see it's quite small on my workplane.

So I'm going to, so that's all of my objects and I'm going to group them and what this allows me to do is it allows me to make modifications to the entire object.

So all of those objects that we had together are now being modified at the same time.

So it allows me to make changes to my object or all of my objects, my multiple objects at the same time.

And it means that the ratio between my objects will not change.

Okay so it will keep it to scale.

So now, if I ungroup my objects, you can see I have here a large house model and there are still multiple objects.

Now, if I wanted to move them individually, I could do that.

So by grouping our objects first it allows us to modify all of them together.

So we don't have to do them individually, which is a really really efficient way of altering our models within the Tinkercad software.

Now you're going to have a go at doing something similar to this in just a moment and you're going to use some of the skills you've learned in previous lessons to modify groups of shapes.

So let's head back to the slides now and just walk through your task before you head off to the Tinkercad software for yourselves.

So we've just had a look then at multiplying multiple 3D objects at the same time.

Now it's your turn.

You're going to head over to these slides in a moment, the worksheet slides in a moment and you are going to find a link.

This is on your worksheet.

You're going to open that link.

You're going to select copy at tinker and you're going to follow the instructions for task one.

Now there are two slides with instructions and what that's going to tell you is what to do with the objects that you can see on the screen at the moment, okay? So you're going to have to modify the multiple objects for A and modify the multiple objects for B, and C, and D.

And at the end, you'll have a workplane and we'll go through what that should look like together.

So what I'd like you to do is I'd like you to pause the video, complete task one on your worksheet.

And just remember that there are more than one slide.

Have a go at doing that now.

Resume the video once you've finished.

Okay, welcome back.

Hopefully you had a bit of time to modify the 3D objects on your workplane.

Let's have a look at what that should look like within the Tinkercad software.

Hopefully your workplane looks very similar to this.

So this is A over here and what you had to do for A was to create a hole in the cube by dragging the whole 3D shape onto the solid shape and grouping the objects.

As you can see the placeholder was not tall enough to go all the way through the cubes.

So what you should have is a void in your cube that looks like this.

Okay so that's been grouped.

If I ungroup it, we can see the placeholder inside my cube, that was A.

So if your A looked like this well done for completing that part of this task.

Now B you needed to drag the sphere onto the cylinder, group the objects and drag them to the centre of the workspace.

Let's zoom in on that.

And we can see my sphere is now part of my cylinder.

They are grouped together and they are now occupying the centre of my workspace.

So I've dragged them across from the corner over here.

For C you needed to drag the triangular prism on top of the cube, now let's ungroup this so you can see.

Drag the triangular prism on top of the cube, you then needed to group your 3D objects and you needed to write down the dimensions of the grouped object in millimetres.

Now, originally that was 20 width by 20 depth or length by 30 height.

If we look at it now we needed to then double its original size and write down the new dimensions of our object.

So let's have a look, it should be doubled.

So it's 40 by 40 by 60 tall.

So well done if you've got that one the same as well.

And finally D your task was to rotate and drag the cone and place that on top of the cylinder.

So you can see my cone is on top of my cylinder.

You then needed to group the 3D objects and write down the original dimensions of that grouped object.

Now that was 20 width by 20 depth and that was 40 high around 40 high.

What you then needed to do was resize that grouped 3D object so they was half its original size and write down those new dimensions in millimetres and that is now measuring at 10 by 10, and it is 20 high.

So your 3D workspace should look very similar to mine.

A, B, and C and D.

Let's head back to the slides and look at the advantages and disadvantages of grouping 3D objects within Tinkercad.

So let's look at some of the advantages of grouping within that 3D space.

So the same changes can be made quickly to many 3D objects at the same time.

So if you've got them all grouped together you can make those changes to the whole model or that whole object that's grouped at the same time.

It allows you to keep the space between 3D objects the same.

So if you're moving grouped objects and you've grouped them all together it allows that space to remain the same.

So when you ungroup them that space hasn't changed and it reduces the likelihood of making accidental changes to part of your 3D model.

So you could make changes to multiple objects without grouping, but it reduces the likelihood of making accidental changes to part of your model if you're trying to make changes wholesale.

So those are some of the advantages to using grouping, but obviously with everything we do, there are also disadvantages.

So let's have a look at what some of the disadvantages of grouping are.

So you will need to ungroup 3D objects if you want to make any changes to individual objects within your model.

So if you'll group them first you need to ungroup them in order to make any changes and all grouped 3D objects become the same colour.

If you noticed that when you were doing your grouping the sphere and the cylinder both became orange, okay.

Your cube and your triangular prism both became red.

So if you're grouping objects the grouped objects would all become the same colour.

Now that's fine if you're 3D printing because obviously the 3D printer will only print with the plastic installed, so the colour of the plastic installed.

But if you are trying to create a model and you need the colours to be representative of the different shapes within your model then that doesn't really help at all.

So you'd have to ungroup again.

So there are many advantages and disadvantages to using grouping.

So you need to figure out whether it's in your interests to group and whether it's going to help you create your model.

Now, we're going to have a go at designing our own 3D model of a photo frame.

As you can see photo frames can look lots of different ways.

They can be different in appearance, can be different sizes and it's really down to your creative design as to how you want to build it.

There are however features on photo frame that we need to consider essential features such as it must hold a photo between 152 millimetres width and 102 millimetres in height.

There are also desirable features to photo frames.

It could have a stand that holds it up.

It could have an attractive design.

Nobody wants an unattractive photo frame on their desk and it could hold more than one photo.

You might've seen photo frames that hold multiple photos at one time.

So you could think about building one that has that feature.

So these are some of the features that you'll need to consider.

First thing we need to do is we need to design it.

So we need to sketch out what our photo frame is going to to look like and you'll need to make sure that you're including the dimensions.

This is so that when we come to build it in lesson six we are able to quickly and clearly see how big we need our shapes to be in order to speed up that process and make it more efficient in terms of time.

It also means that we can accurately identify whether or not we have made our photo frame to the correct size.

Use the essentials and the desirable features on the worksheet to support you whilst you do that, and then add any possible enhancements that you might want to make to your photo frame.

So add anything that you might want to add that would make your photo frame even better.

So what I'd like you to do is I'd like to pause the video.

Have a go at sketching out your photo frame.

Remember to include your dimensions and add any possible features that you might want to add to enhance your 3D model.

Pause the video, resume the video once you're finished.

Welcome back.

Hopefully you've enjoyed sketching out your design for your photo frame.

You've hopefully also added in some enhancements that you might want to add and you've included dimensions.

So let's pop over and just have a quick look at what mine looks like.

So you can see if there's any ideas you might want to magpie or if you want to just compare the two.

So this is my very basic design of a photo frame.

As you can see, it's width is 172 millimetres, I've included that and its height is 122 millimetres.

This is to ensure that my photo frame can fit my 152 millimetre photo and by 102 millimetres.

Now I've also added possible enhancements.

So I've included added space to more photos.

So I might want to include another photo.

Now you're not held to this.

This is completely up to you.

You might get to it and be like, oh I don't want to make that.

That's fine.

There's just possible ideas that you might want to use.

I've also added that I might want to add my initials to the frame and add some enhancements to the frame of my photo.

These are completely up to you but hopefully you've had a think about some of the ideas that you could do that would enhance your photo frame.

Let's have a look at the next steps then.

So the next steps are planning our 3D models.

So we know what we want it to look like.

We know what we want to maybe enhance our 3D model with.

Now we're into the development stage and we're going to take this one step at a time.

So what I want you to do is I want you to think about each individual step in order to create your 3D model.

Okay? Think about the 3D shapes that you will need and any modifications that are required.

Do you need to rotate it? Do you need to change the colour? Think about what exactly you will need to do in order to create your model in Tinkercad and write any notes you might need to write.

You might want to add something as simple as resize the cube, okay.

Rotate by 90 degrees and draw images to support that.

So include the change of size, include the change of size of angle and include the size of rotations.

All of these will be really beneficial when it comes to creating your model and you have that plan in front of you.

So what I'd like you to do is pause the video and complete tasks three on your worksheet, resume the video when you're done.

Welcome back.

Hopefully you have included all of the different steps for you to create your model.

Let's have a quick brief look at my development stages and then we can move on to the rest of the lesson.

So my photo frame development stages look like this.

I've included some key notes, some sizes, dimensions, I've drawn at different stages just to help me when I get to create my 3D model and I've added a note that tells me what I'm doing.

It's no good just having a box in the shape to number one without any idea of what that means.

So I've included my dimensions.

I've included what I'm doing in that specific step, which is resizing a solid cube, and then I've done the same for two, three, and four.

You might have more steps than me, you might have less steps than me, depending on how detailed you wanted your photo frame to be.

So the next thing we're going to think about is critical thinking and critical thinking is a really important aspect of the design phase.

It makes us question our own project.

What could we make better? What do we like about it? What could be added to improve this part? So what I'm going to show you in a moment is I'm going to show you the design that's on the screen in a bit more detail, a bit bigger.

And I want you to think of two things you like about the design and one thing that you think could be improved.

So I'd like you to pause the video, have a think about two things that you like, and one thing that could be improved, and resume the video when you're finished.

Welcome back.

I hope you've got some really good ideas about what could be improved and what you like about the model or the design of the model that's on the screen.

Personally I really like that it's very detailed.

I like that there's three layers to it.

So you've got your photograph in the middle.

You've got what could be just a white background to make it stand out.

And then you've got your frame around the outside.

I also really like that there's lots of information about the dimensions.

I think that's really important to know how big you want your certain shapes to be when you're building that model in the Tinkercad software.

If I could change one thing, whilst it is very detailed, it's very busy.

There's lots going on.

I personally think it would be improved if it was a little bit more simple.

So hopefully you thought of some things that could be improved and I want you to take that knowledge forward when you go and think about your own project, your own design, think about things you like 'cause that's really important is that we think, oh actually I really liked that part that I made there or this decisions to do this, but also think critically about what could be changed to improve your design.

That concludes lesson five.

So hopefully we're going to take those ideas forward in improving and developing your own designs.

I've really enjoyed creating my design alongside you and I'm really looking forward to turning that design into a tangible 3D model in the Tinkercad software and we'll be doing that in lesson six.

I'd love to see the designs that you've created.

So if you'd like to share them with the Oak National Academy, please consider doing that.

Ask your parent or carer to share them on Instagram, Facebook, or Twitter, and tag @OakNational and hashtag LearnwithOak.

I'm really looking forward to lesson six and the conclusion of our entire unit where we use all of those skills that we've developed and put them into practise when we build our 3D model of a photo frame.

I will see you all then.