Making the metal hook

Information will be added later

The material for the hook is mild steel and is cut into lengths of 120mm.

Drilling hole in metal

Centre punchBefore you use the drill to drill into the metal a small dent is placed into the metal, this is done with a centre punch. The location of this hole is marked and the punch is placed into this location and the punch is hit ONCE with the hammer to make a small dent. This dent in the metal will allow the drill bit to be located and the hole should be drilled in the correct place. If the dent was not there then the drill bit will slide over the metal and you might not drill the hole in the correct position, there is also the possibility that the drill bit will snap.
Guard in place before drillingOnce the centre punch mark has been made in the metal then you need to set it up in a machine vice on the drilling machine.

The machine vice is fixed to the table of the drill and the metal is placed and securely fixed so it will not move. At this stage if the location of the punch is not correct, you need to tell the teacher and it will be adjusted.

The finished holeDrillingThe guard is put into place and the drill is turned on and the metal is drilled slowly. You need to wear goggles to protect your eyes. The drill should be set at a certain depth so you do not drill into the machine vice.

The metal filings left after the hole has been drilled need to be removed from the drill, this is done with a brush to stop you getting your fingers cut on the sharp metal bits. On the metal there will also be small bits of metal still remaining, these are also very sharp and need to be removed with a file.

The finished hole drilled. Notice the marks still remain from the marking out of the metal.

The final finish for the metal before dip coating is to use emery paper this is a type of paper that can be used for sanding down hard and rough surfaces. It can also be used for resistant technology purposes to give a smooth, shiny finish to manufactured products and is often used in the finishing of high-end watch movements. Similar to sandpaper, it is made by gluing small particles of the mineral emery to paper.

Bending the metal

Bending the metal – in order to do this a metalcraft jig was used.
When the ends of the metal have been rounded and smoothed the metal needs to be bent to form a hook.  This bending is done on a metal craft jig, the two pictures show the position of the metal when it is placed into the jig. NOTE THE LOCATION OF THE HOLE. 

The lever is then put on top of the jig and it is pulled round until it reaches the masking tape marked onto the jig.

This will take a good deal of force and you may need help. When the metal is removed from the jig the hook is formed.  If you bend the metal beyond the masking tape it will spring back into place, this is normal.

Dip-coating the metal in plastic

Plastic coating is the process of applying a thermoplastic to the surface of metal items to provide long-term corrosion, impact and chemical resistance whilst offering an attractive decorative finish. Plastics tend to be applied a little thicker than standard paints and are generally impermeable to water or aggressive chemicals. As a result thermoplastics are ideal for very long term protection of metal in the construction and automotive industries or for the coating of welded items such as wire baskets, fencing mesh and cylinders.

The materials used are in powder (or liquid) form and are usually applied in the factory by standard fluid-bed (fluidised bed) or electrostatic spray techniques.

Thermoplastic powders can be coated using either the fluidised bed dip coating process or by electrostatic spraying. The advantages and disadvantages of each process are summarised below.

The OvenTemp between 350 and 400 degees CAt this stage in the manufacture of the project the metal needs to be bent and the edges are all finished so that they will not cut anyone. The metal is placed in the oven at a temperature between 350 and 400 degrees C, for 4 minutes. At this temperature the metal becomes very hot and will burn you if it is touched. You need to wear protective heat proof gloves.
When the metal has been in the oven for the 4 minutes it is then removed with a hook and placed into the plastic powder. This powder will stick to the metal and start to expand until all areas of the metal are covered. This will colour the metal, give it a protective coating and make it more attractive.


7 Responses

  1. hi mr montgonmey great coat hook i am makin it wif ya

  2. Thanks! This helps alot with my homework. I cant wait to get mine home 🙂

  3. This website is really good! It helps with homework! 🙂

  4. Wow this website is really helpful for exams. I just needed a bit of info on different machinery we used throughout the year, and it’s all here easy to find and remember!

  5. this website really helped me when i was revising for my exams as i forgot how 2 make it i just looked it up =) thanks

  6. This website really helped us as we forgot on how it was made and some names of tools and machinery 🙂 Thank you

  7. this website is pretty good im really good it helps a lot with homework

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