loading
Picture of Phone / Ipod holder
DSCN2528.JPG
This is a project that I teach to year 8 (KS3) students (12year olds) it aims to give an insight into what GCSE Engineering (KS4) would involve. This is important as there are many other subjects they can choose within Design and Technology and we want the students to pick the one that’s right for them

Learning objective of the project.
By designing and making a phone holder KS3 students will be introduced to Engineering tools and machinery. Students will apply knowledge and understanding to work independently with equipment such as the metal lathe, pillar drill, measuring & marking tools, and how add a surface finish to steel. By the end of the project students should be able to assess and conclude if they would like to continue their studies of Engineering to GCSE level.

Please see the attached files for work booklets, work sheets and end of module test

If you have any questions please add them to the comments section at the end.....Jonny :) 


 
Remove these adsRemove these ads by Signing Up

Step 1: Designing

Picture of Designing
scan0001.jpg
Resources; Inspiration images / inspiration page / colour pencils

The students can use a selection of sources for inspiration e.g. flowers, architecture, nature, patterns, coral reef,  etc... Using the design inspiration page, they start by sticking in the chosen image then focusing on part of it, then sketch the basic lines that make up that image. By using the phrase “Rearrange, Repeat, Rotate” create a design idea as per the example shown then repeat the process to create a range of ideas.

Step 2: Card Model + Design Development

Picture of Card Model + Design Development
Resources; Two different colours of card / scissors / rulers / glue 

Now make a card model of their favourite idea, the students can peer assess each others work on the following criteria; Stability, Strength, Aesthetics, Manufacture (ability to make the design). The model is disassembled and stuck onto the model and development page then annotated with info on the discussions they just had. The teacher needs to sketch exploded views of how the rods join to the sides.

Step 3: Aluminium Sides: Marking Out

Picture of Aluminium Sides: Marking Out
DSCN2469.JPG
Resources; Aluminium rectangles 60x50x3mm  (x2)
Tools; Scriber / layout fluid


Remember H&S is super important in the school workshop, please ensure your students are adequately briefed on tools, machinery and workshop behaviour. The first step is to mark out one of the aluminium sides with the design, you can use layout fluid, if not use a permanent marker to colour the aluminium, this is done to make the lines easier to see. Use a scriber to scratch the lines onto the work piece.

Step 4: Aluminium Sides: Cutting Out

Picture of Aluminium Sides: Cutting Out
DSCN2471.JPG
DSCN2472.JPG
Tools; Hacksaw / Metal Vice / Soft Jaws


Put the two aluminium sides together so they are cut at the same time (saves time and makes them identical). Cut the aluminium using the hacksaws I would recommend using ‘soft jaws’ in the vice to avoid marks appearing on the aluminium. Remember to tell the kiddies to cut in a straight line downwards and to rotate their work in the vice.

Step 5: Aluminium Sides: Filing & Sanding

Picture of Aluminium Sides: Filing & Sanding
DSCN2474.JPG
Tools; Files /Abrasive paper

Keeping the two sides together use flat, half round and needle files to smooth all the edges. Then use abrasive paper to smooth the edges further. The sides also need sanding until all file marks are removed.

Step 6: Aluminium Sides: Marking Out Holes

Picture of Aluminium Sides: Marking Out Holes
DSCN2479.JPG
Tools; Scriber / Centre Punch / Hammer


Use a scriber to mark out the two holes for the bolts to hold the steel rods in place, they must not be too close to the edge and you need one rod at low front and the other at high back. Centre punch the marks to be drilled.

Step 7: Aluminium Sides: Drilling Holes

Picture of Aluminium Sides: Drilling Holes
DSCN2482.JPG
Tools: Hand Clamp / Ø5mm drill bit / Ø10mm drill bit

Keep the two sides together and use a hand vice to safely hold the work piece whilst drilling at Ø5mm (remember goggles on, hair tied, sleeves rolled). If there are burrs on the underside of the work piece, use a Ø10mm drill bit to remove them by hand.

Step 8: Aluminium Sides: Sanding

Picture of Aluminium Sides: Sanding
DSCN2485.JPG
Tools: Abrasive Paper

To finish the sides use abrasive paper to create a ‘brushed’ look. For best results ensure you sand in one direction.

Step 9: Steel Rods: Cutting To Size + Facing Off

Picture of Steel Rods: Cutting To Size + Facing Off
DSCN2489.JPG
Materials;   steel rods Ø10mm
Tools; Hack Saw / Steel Rule / Scriber
Machinery; Lathe

Measure and mark out the steel rods using the steel rule and scriber (they need two rods of equal length). The length of the rods = width of phone / Ipod + 10mm. Using a hacksaw the students need to cut two rods to the correct size. Use the lathe to face off all four ends ensuring the two rods are the same length. Remember H&S rules for machines!

Step 10: Steel Rods: Centre Drilling

Picture of Steel Rods: Centre Drilling
Tools; Centre Drill
Machines: Lathe

Centre drill all four ends to a depth of roughly 5mm.


Step 11: Steel Rods: Drilling The Holes

Picture of Steel Rods: Drilling The Holes
Tools: Ø4.5mm Drill Bit
Machines: Lathe

The Ø4.5mm x 20mm deep hole needs to be drilled in all four ends, go slow with plenty of oil.....if not....lots of snapped drill bits!

Step 12: Steel Rods: Threading Holes

Picture of Steel Rods: Threading Holes
Tools: M5 Tap / Tap Wrench / Oil

Thread the holes at M5 make it very clear to the students that they must oil the tap and not use too much force or the tap will break, especially when it hits the bottom of the hole.

Step 13: Steel Rods: Sanding

Picture of Steel Rods: Sanding
DSCN2496.JPG
Tools: Abrasive Paper

Sand the rods ready for oil blacking, You must ensure they are totally clean of corrosion or oil.

Step 14: Steel Rods: Oil Blacking

Picture of Steel Rods: Oil Blacking
DSCN2507.JPG
DSCN2514.JPG
Tools: Used Engine Oil (in a metal container + lid)
Machines: Brazing Hearth / Extraction 

Put the rods on something like a welding rod. Heat the rods one at a time until the steel is ‘just before red’ if the rod is over heated let it loose its red glow then drop it in the oil. As you can see from the images when dropped the oil will smoke, you must have a suitable extraction system to remove fumes. When removing the rods from the oil they will still be very hot! Once cooled and clean if the oil black finish is patchy you can re-sand and re-black. I have a mesh ladle that sits at the bottom of the oil pot. Ensure full heat safety gear is worn and one to one adult supervision is available, if the oil does ignite and does not self extinguish immediately, put the lid on the container......DO NOT ADD WATER! Full extraction must be used.

Step 15: Acrylic Sides: Marking + Cutting Out

Picture of Acrylic Sides: Marking + Cutting Out
DSCN2517.JPG
DSCN2518.JPG
Materials; acrylic rectangles 60x40x3mm (x2)
Tools; Coping saw

Using a biro draw design onto protective film that comes with acrylic (if film is removed masking tape can be used to recover the acrylic surface). Just like the aluminium cut both sides at the same time use a coping saw. (note remind the students their designs must be ‘chunky’ or the acrylic will snap’)

Step 16: Acrylic Sides: Filing & Sanding

Picture of Acrylic Sides: Filing & Sanding
DSCN2522.JPG
Tools: Files / Abrasive Paper

Using flat, half round and needle files smooth out the shape then use abrasive paper to finish the edges, wet & dry paper can be used as a final stage to polish the edge.

Step 17: Acrylic Sides: Marking & Drilling Holes

Picture of Acrylic Sides: Marking & Drilling Holes
DSCN2536.JPG
Tools: Board Pen / Ø5mm Drill Bit / Hand Clamp
Machines: Pillar Drill

Put the acrylic next to the assembled aluminium structure to mark where the hole needs to go.

With both pieces of acrylic put together use a hand vice to hold whist drilling at Ø5mm. NOTE the hole must not be too close to the edge, the hole must be drilled slowly and bizarrely wood drill bits seem to help prevent breakages!

Step 18: Assemble :)

Resources: Socket Cap Screws 
Tools: Allen (hex) Key

Assemble the components together.

I have also included some pictures of my students work.

Solutions to problems

Bolts don’t fit into threads: Sometimes the start of the thread gets damages, just de burr the hole with a large diameter drill bit and run the tap back through.

Bolts are too long to fit into the hole: Cut bolts shorter with a hacksaw then file the cut edge to remove rough edge.

No Lathes: You can file the ends flat, centre punch the middle of the rod, secure in the V of a drill vice then drill at Ø4.5mm x 20mm deep. Follow instructable to create a thread in the hole.

Acrylic breaks: Design is too thin / drilling too quick / hole is too close to the edge.

Oil black is patchy: surface not clean before blacking / not hot enough
wilgubeast3 years ago
Your students must LOVE your class. Awesome tools + phone holders?
jonnyd55 (author)  wilgubeast3 years ago
Thanks :) the majority have a great time and end up with a lovely thing to take home. I think its important they make something they can relate to and use.
nicely done with the inspiration... rotate, rearrange repeat is a really great idea!
-stu
jonnyd55 (author)  stumitch3 years ago
Thanks, I will shortly be adding an instructable that focuses on creativity and goes into more depth on how to turn the unexpected into the .......... awesome!
Nice idea... what lacks for sure in the shops can be creativity! its so easy to just give kids step by step without getting them to think in a different way.
jjone5383 years ago
out of a scale of 1 to 10 how cool it is i would say 12!! its so cool
jonnyd55 (author)  jjone5383 years ago
Thanks, are you going to make one?
jjone5383 years ago
THAT IS SO COOL! U ARE GREAT!!!
Apolo83 years ago
+11 four you !
That is awesome. Great looking final product, too. Subbed.
jonnyd55 (author)  TeacherChair3 years ago
Thanks, its a new project I created this year so students understand what is involved in engineering..... which as it happens is a new GCSE I started last year :)