Lesson video

So hello and welcome to today's lesson with me Mr. Telfer, or Mr. T.

Woo, the T teacher.

Now, last lesson, I know it was a bit of a long one, a bit heavy, we got a lot of work done.

Today's lesson is very much more practical, so it's only a bit of theory and a lot more making, okay.

So hopefully you enjoy.

So like I said, today's lesson we're going to be doing it practical.

Now, if you've done the last lesson, remember I told you to bring your design work 'cause you're going to use it in this lesson.

So I've got my design right here, I'm going to need it later on.

If you haven't done that lesson previously, I recommend you do it.

Or you could still do the learning in this part, go backwards, then do the learning, and then you can do the practical in this lesson.

It's totally up to you, you can work it out.

So, hmm, what you're going to need for this lesson, for the theory elements, and there's not too much theory, but you'll just need your exercise book, something to write with, a pen or pencil, you might want to sketch down some ideas on the show.

And then for the practical, what you're going to need is some glue, ruler, card.

Now I'm using corrugated card for this one, but you might use something different.

Scissors and tape, masking tape, double-sided tape, cello tape, whatever you can use, okay.

Now if you have got sharp scissors, please be very careful.

I mean, I don't think you need adult supervision, but just be careful, okay.

So in this lesson, what we're going to look at is, why do we need to model or prototype our products? We're going then have a theory session on card modelling.

And I'm going to show you a few techniques, and then we're going to look at CAD modelling and, yeah, then you can have a go of that as well.

Mm-hmm.

Now today's keywords, we are looking at modelling, as you can tell we spoke about it so much already.

And that's just basically us having a 3D model of our design.

So taking it from this 2D design to a 3D object, okay.

Now a mock up is, this is essentially a mock up here.

So it's a model with little or no interactions.

You know, it just gives us some idea of shape, size, et cetera, et cetera.

But there's nothing I can actually do with it.

So it's low fidelity, okay.

No interactions.

Now a prototype, that is similar like this, for if I have buttons that work and these or something I could do, something with it, see the functions or understand the concept of how it works or how it processes information, that will be a prototype, okay.

So a prototype is essentially a working model.

So better in your mind.

Now, hopefully you've made a note of these.

If you haven't, take these down now, and if you have well done, and we'll keep it moving.

So, the first thing I want us to look at is prototyping modelling.

Now of course, I wouldn't be a teacher if I just kept talking.

So the first thing I want you to do is, answer this question to yourself.

Why do we even need to model? You know, if I've done this lovely design here, why do I then need to go and model my work? Pause the video, write down some answers, and then when you come back, we will check what you've done.

Welcome back.

So, you could have said, any of the following things.

You could have said about physical interaction, you know, I can physically touch it, I can physically see it.

If it had functions, I could test them.

So physical interaction, that's why, that's probably the most obvious important reason why we model our work.

Mm-hmm.

Sorry.

We also can identify faults.

And, I identified a lot of faults with this when I was designing it and trying it, it's hard work.

But yeah, but then we can correct them and we can develop our designs.

So, remember I spoke to you, in that last lesson about iterative design and the process of designing, redesigning, refining going into that process, that cycle.

So yeah, you can identify our faults.

Can also experiment with materials.

Now, what I mean by that is, if I'm going to model, I'm using something cheap, you know some paper, card, acrylics, I won't say it's necessarily cheap, or acrylic as opposed to us using titanium or think about gold iPhone, you know, the most a model that can achieve the material before they made it out of gold.

Because if it went wrong, it's a lot of money wasted.

So, we can experiment with different materials.

And lastly, it helps us to evaluate our product.

So, if I was to just give you this drawing, or, you know, one of my designs, just gave me that to evaluate, not much to say or do, or if I give you a physical object, you can then start saying, yes, you know.

You're like this and you're like that.

And it should have this part shooting out here.

And well, you can pass it around you can get a bit more feedback on it.

Makes more sense, it's more valid, you know.

It's more valid than constructive feedback than the rest of our image.

That is why we model.

Now, you may have a few different ideas or different answers that are in and around that.

That's fine.

If you haven't got any of these, take a note of them now.

And if you have, you're a grade A student.

Not even As no more, you're like eights and nines.

So what we're going to do now, is just play a little game.

Mm-hmm.

So it's a bit of a product design game.

I'm giving you three companies, industries.

Ah two companies and an industry, I guess.

Kindly identify an architect company.

Hmm, okay.

What I'm going to do is just show you a modelling material.

'Cause we are going to look at a cardboard later on but, it's all the materials that they use in the industry.

So, I'm going to show you a model, a material, and you are going to identify which company or industry uses that material to model, okay.

So, the first material I'm going to show you is, modelling clay.

Hey, shout out your answers now.

Yep, if you said BMW, you are correct.

So, what you might not know, you might know, sorry, is that when you see a BMW, I say BMW, nearly every car company does this.

Before you see the car on the road, about two years three years prior it's being designed, okay.

So right now, the car that you're going to see in two three years time, is already being processed.

So the goal from 2D drawings to, probably the third or fourth stage, where they're going to start doing their first 3D modelling and they use clay, or bundling plasticine as it were, no whatever they use.

Yeah, clay, modelling clay, modelling plasticine, same difference.

Now, what they say or why they use clay, is because it's an easy medium to work with.

It's very flexible.

And they can create all the shapes and angles with ease.

Now, if you want to become an automotive sculptor, you're going to make surplus of around 120 grand a year.

Not bad, isn't it? Not bad.

Well, I should say 120 grand in Euros 'cause that was a Euro figure.

Well, yeah, so not too bad? No? Art and design, comes a long way.

Now the next product or material, sorry, is cardboard.

Now, like I said, we're going to be using cardboard today.

Mm-hmm.

Well which company do you think uses cardboard? Great shout out your answer, quick, quick, quick.

There you go.

Mr. James Diver, Mr. Sir James Dyson actually, and his brilliant design team, look them up online.

You know, they're part of that design process as well, going through that cycle, where they make a bunch of different models, testing out little parts and thinking how things connect, shapes and sizes before their vacuums go into production.

I'll tell you, a cardboard is a very versatile material.

Foam board is used for the architects models.

Hey so, civil engineers use this as well, when they will be modelling constructions, when bridges or sectional of apartments or even the plan layouts, you know.

We use it as well in our A levels when they're doing architectural work as well.

So, foam board board brilliant model material, very lightweight easy to cut, hard to shape, but, we can work out.

Just like I always say, we have to find a balance and with everything that has a positive there's got to be a bit of a downside as well, unfortunately.

So, what we're going to do now I want you to pause the video, and have a think about disadvantages of 3D modelling, what some of them could be? Jot down an idea or two.

And then when we get back, we'll just go through them real quick.

So for disadvantages, you could have said any of the following.

You could have said that it's time consuming.

Now, if you're going to try and create a model, oops, dropped down a few.

Oops, dropped it again.

Now if you're trying to create certain shapes or sizes, it can be very time consuming, definitely can.

We'll but you're probably get there in a moment.

Now it can't always be tested as well.

So for example, like I said these are made out of cardboard.

If I drop them, they're not going to break or shatter.

But if I wanted them to be made out of the actual material the problem, they would have at least cracked if I'd done that.

So testing can't always be fair or real or accurate, sorry.

Now limited to materials as well.

So many materials you may have access to, might not be suitable for what we're trying to create.

It might be too thin.

It might not be able to bear enough weight.

You know, there might not be too much flexibility.

It might be quite rigid.

So, depending on what you have access to, depends on how successful your model may be.

And, last but not least, even all your item could actually get damaged.

If the material isn't a strong material, or, you know it's not being used in its correct form, you know, or what its expected to be used for, it could easily break.

Hope you wrote these down.

If you haven't press pause and write them down now.

If you have got these, excellent.

We are going to progress.

So, that wraps up your first part of theory.

Now we're going to move on to your practical where you are going to ne making your Bluetooth speaker.

Now, opted for us to use corrugated cardboard for several reasons.

Number one, it's fairly cheap material.

You know, we can get it in abundance, we can salvage it from packaging.

You know, go down to the shops and ask some for free.

So it's fairly flexible as well as fairly strong.

It's also biodegradable.

So if you've made your own composter, from one of my other lessons, you can put it in the compost heap as well.

Amazing, so what I'm going to do now is just show you a short video.

It's not even five minutes, showing you a few techniques of how I manage to create certain shapes and what you can do to make your model.

Sit back, enjoy take a few notes, and then it's going to be your turn to make your very own Bluetooth speaker.

And if you've got a little Bluetooth speaker, you can actually test out.

I put mine in here and it works.

So, enjoy.

Okay so, like I said, we're going to use our design, our final design from our last lesson to design our Bluetooth speaker using corrugated cardboard.

I'm using corrugated cardboard.

So, you know, it's got like the flute shape in it.

Some of his properties 'cause it's quite strong.

Easy for us to work with as well.

Fairly easy for us to work with.

Now, as you can see for me to create that shape in first instance, what I had to do, I really have to make a lot of paper templates and try and build it and figure it out.

About sizes, how I want it to look, trying to create it, almost like a map sort to say or a paper to try and fold it up.

And that's what we call sketch modelling.

Okay so, just use paper, just to get a rough guideline to figure out what I want to do.

Some months of doing that, and then I managed to start cutting out the pieces out of the corrugated cardboard like so.

Now, here's something I was doing earlier.

As you know, cardboard, corrugated cardboard as well, is quite, you know, stiff rigid you can't really, bend a nice curve in there.

But, one technique that you can do is if you start getting a ruler and your scissors, and we start just damaging through the corrugation, like so.

What you'll find, don't go too far for this.

I think I've damaged that part actually.

What you'll find is that you can create a nice curve, like so.

You can see, you can just curve, sorry about the lighting.

You'll get something that looks like that.

And then you can curve it around.

Hmm, that's a lot easier.

You can just use a bit of tape.

We'll create the shape that you're after, like so.

So, that's how I started to create that shape like so.

Get it.

Now there's other tricks that you can do.

So, for example, you could make a little tab and you could literally just put slot into the corrugated cardboard like so.

Now this is where you need to be careful, make sure you don't injure yourself.

And you could literally just make tabs and slots from put pieces together.

So you might make a stand for it, et cetera, et cetera.

Now, with circles, this one I made earlier.

But circles can be a bit tricky to cut out of corrugated cardboard.

What I recommend, is you do it in bits.

Just do it in smaller bits to get your accuracy.

And you could then turn these into some buttons or the actual speakers, part of the design.

It's all up to you.

And another thing you can do is stack them.

So, I haven't got any glue with me cause I'm not prepared.

I'm terrible.

But I have got double-sided tape.

So I'm going to put some tape on there just to show you what we can do.

Now, we can start layering our product to keep it accurate.

And then you've got a thicker a piece that looks like so.

Instead, if I wanted to add it to my model I could stick it like so.

That could be a speaker or could be a button that we would put on the side.

And if you actually, a cocktail stick, there's little one that had the earlier.

You could actually put that through your model, could put that on that.

And then you could actually have like almost a workable pins around.

Oops on this side.

So what I'd like to do is just start thinking about your model, thinking about what shape it's going to be and thinking about how you're going to explore your cardboard or paper in the first instance, automate a lot of models.

Are you going to make it look like a speaker? Are you going to be creating the shapes? Are you going to stop making it effective? So this is when it goes off to you.

I haven't seen your designs.

What you want to do is try and recreate it, so design like your model.

Have fun.

Stay safe, keep tidy, and I see you when you get back.

So I hope you enjoyed that little video there, just a snapshot of information on things you can do to do your model.

Now it's over to you.

So get all your materials make sure you're working in a safe environment.

Make sure you're working very sensibly.

And I look forward to seeing your finished products.

Remember you could add on details, power buttons.

You might even add some material or add a bit of.

Who knows, let's see how creative you can be.

See you when you get back.

Welcome back after that modelling, I hope that you've done a really a good job.

I also hope you tied up your mess because trust me, I know my place was a mess.

So yours is got to be as well.

So anyway, moving on we're now going to look at CAD modelling.

If you've done any of my previous lessons where we've looked at CAD you'll know what it stands for.

Shout out if you know.

There you go.

Computer aided design modelling.

Now what I used to do mine with a programme called Tinkercad.

Now Tinkercad is a free online programme where you can do your 3D modelling excellent.

And you know, you can use it at home.

You can use it at school, stop using it.

I don't use it and you can use it, okay.

Now with Tinkercad what I will say is, is free but it's an online subscription.

So you need to sign up with an adult's permission with an adult with you even okay.

Parent or guardian must give you that permission before you do it.

Do not do it by yourself otherwise you're going to get in trouble.

Okay, and you don't want to do that.

So if you haven't got your own team you've got to count already and you want to get one speak to your parents and then go to www.

tinkercad, down there follow the link and sign up.

So these are just some of my models that I managed to do using Tinkercad.

Now I'm not going to lie to you.

It took me a while to get into it.

I'm used to using another programme, but once you got into it it's actually quite fun to be totally honest.

Now, if you haven't used Tinkercad before there are tutorials that you can find online and there are actually old lessons as well that you can find that will talk you through Tinkercad as well and give you some guidance on the basics so to say.

So if you're a bit, ooh I'm not sure about this.

There's plenty of hot pad there.

And as you can see, once you get into it you can stop being creative.

You know, it's quite easy to start manipulating your work so you can use elements of scamper as well, once you're doing your CAD design.

It's also great, look a feature.

Now I'm going to show you now.

So once you've designed your product you can download it as an OBJ file load it up in 3D page.

And then you can start creating some augmented reality which mixes your real world.

As you can see the phone in the house with your actual computer graphic as well that you've designed amazing.

So you can actually see your product in the real world.

So what I'd like you to do now, I've the spoken for you that real quick pause the video and tell me some advantages of CAD modelling.

I'll see you in a moment.

So for CAD modelling, for the advantages or the benefits you could have said anything on the following.

No, we could have spoke about how we can improve our design quality with it or we can modify our designs, or we can view in different ways or even how fun it is to learn.

Now with this view in several ways, by that what I meant is if you looked at my images I look at it from all angles.

You know, I can do a 360 degree of my object for the button, the top, all sorts of great stuff.

And also we can super impose it or we can start putting it in places that we want to see or even use the augmented reality features.

That's your life.

That is you living in the land of the internet.

That is you living the fourth industrial revolution which I'm going to mention in a normal lesson.

Now also we can modify our work quickly, if you're familiar with all the shortcuts, you know you Control+Z, Control+C, Control+V all of that.

It's quite easy for you to work your way around it.

And like I said, it's fun.

It's similar.

Once you get into it, it's not too tricky, okay.

So I do recommend you all have a go and try and recreate your model using Tinkercad.

But remember you must get your parents permission.

Now, of course, I'm going to give you a task now.

So thinking about CAD modelling, I mean I just gave you half the answers already.

What I'd like you to do is just think about what are the advantages and disadvantages of using CAD and just do a list of advantages and list of disadvantages, give me answers for each.

If you've got more, even better.

Pause the video now, write down your answers and then when we come back, we'll start rounding off your last test.

So welcome back.

And we're now getting towards the last part of the lesson.

I've just got one more task that I'd like us to do.

Now, these are just images of the stages that I've gone from my design idea, to my sketch modelling to my card modelling and my CAD modelling.

You know, I think I'm quite successful.

I think it's quite similar.

I was so proud of it.

I even wrote myself a tweet and put it online, you know, let me vote.

And I told them I development designs and I was so proud of it.

Look at that I got 3.

7 tail likes.

Amazing.

So what I'd like you to do is just compare and contrast your images.

So from your hand drawing to your modelling and your CAD presented like, so, and just do a comparison or a contrast to see how successful you believe you was.

With your permission, no not your permission with permission from your parents.

What I'd like to do is present it in a way and email to your teachers so they can see the wait rec you've been doing in DT with me.

And if you can't send it to them don't worry do it for yourself, 'cause that's just as important.

Okay so pause the video now present your work neatly.

And you can do a written comparison comparing the beginning to the end, and if you think you successful.

I see you when you get back.

So before we end this lesson, I've got give you a little test just to see where your brain's at.

Make sure you're taking things on board, okay.

So I got three different items. Well, we've got a handheld device thinking about where our hands are going to go when I going to play it and I going to hold it and see.

Anthropometrics, economics, QSA.

You can name them all.

We've got another piece which is jewellery, beautiful rings there.

And we've got building, apartments, house.

What I want you to do is just take a moment and think about how you would model these items, would you be using card or would you be using CAD, okay.

So pause the video, and now have a discussion and then you're going to shout out your answers to me.

So welcome back, now let's see what you believe okay.

So we'll start with the jewellery.

Shout out your answers, quick.

That's right, they definitely use CAD to start designing your modelling jewellery.

There's gentlemen, that I know in Birmingham, Mr. Newman works in Jewellery Quarter and he is a master of designing jewellery, designing it, using CAD to build it for makes it beautiful jewellery as well.

Wearable I can't hold it.

So handheld devices, what do you think that is? So remember we want to test where our thumbs and fingers go and have a whole things.

Would you use card or CAD? That's right, if you can say card, excellent.

Now, if it was going to do an apartment or a house, what do you think I would use? Card or CAD? I'm not telling you, right.

What if you're having a debate with each other and trying to figure that out for yourselves.

So we made it to the end of our practical lesson.

I really hope you've enjoyed it, after so much theory in the last lesson I had to give you a practical, you know I have to.

I'm interested to see your work though wherever that's your 3D model or your CAD model I really want to see what you've achieved.

So ask your parent or guardian to be the one to share that work, and all the images.

Share it on Twitter @OakNational and make sure you hashtag in learnwithOak LWO, and I will be there to see your work give it a thumbs up, give it a like, give it a share, you know because I'm anticipating greatness.

Now until the next lesson, be good and as they say, make sure you tidy up.

And I will see you soon.