Rugby School Thailand - Design and Technology

Mosquito Coil Holder

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Resin & Timbers Research

On top is the link to a page where I did research on the process of making resin using photos and descriptions. I also researched what existing products were there that was made out of resin and the finishes that I am able to use to full complete my mosquito holder

Examples of Mosquito Holders and Opinions

This design is very unique as it has a person looking like they are holding the mosquito coil up. This is very creative and is designed very well as they would need to find the right angle for the mosquito to be held properly. As this design does not have anything that is blocking the airflow, the smoke is able to escape efficiently which helps in repelling mosquitos. However, as the mosquito coil is only being held by a hook, there is a chance that it might fall or blow away in harsh winds.

This design is similar to the one on the right as it holds the same concept of suspending the mosquito coil holder from a hook, but I like this one more as it has some more extravagant details such as the twist at the top and other curves that make it look mook detail-oriented. The colour also adds to the details making it look more expensive and classy even though the materials may not be that expensive. There is a possibility that with the amount of free space it has, the coil might might fall over.

This design may have had its inspiration from a Ferris wheel as it suspends the mosquito coil in the air by hooking the middle of the mosquito coil with a hook; this enables the smoke to disperse evenly as there is no blockage in the airflow and the smoke would travel further in the area. This design is very minimal which would look nice in many places such as the garden (it matches the green) while also being lightweight/portable but it may cause problems as the wind may blow over the holder.

This design is not really one of my favorites as it is quite plain and minimal, and quite "dull" in the design aspect, however, the design itself is sufficient in doing its job. I think that as the design is simple, it can be placed in many areas of the house and even in gardens, doing its job and not distracting and take away from the view of the gardens. It may also be quite unstable as there are only four small legs supporting a circular shape which may be prone for the product to tip over.

The similarities between all of the designs above are that they have a tray or a way to store the ashes so that they are not blown away which may cause harm as people around might be prone to inhaling the ashes and it is also convenient for cleaning. The ashes that fall off the mosquito coil are also quite hot so if the ashes are blown away they may burn someone (can cause serious health problems)

Inspiration Boards + Design Brief

Design and Manufacturing process

IMG_7847.MOV

Here is a timelapse of me starting the design process off by sketching out my designs on marker paper and using a blue pencil to draw. The reason why blue lead is used is that when we sketch over the top with a back fine line marker, our eyes instinctively go to the black, so when the we use the blue pencil, it does not distract us from the focus point of the sketches. I use a flatboard to place my marker paper on and clips to hold my sheet together with the board because it gives convenience in turning the sheet around easily and also creates a smooth surface for a clean sketch look. (improves sketching quality)

After finishing with all my blue pencil sketches on the marker paper. I then went on to use the black fine-line markers from Stadler and Copic in different sizes, using thicket lines on the outside and thinner lines on the inside (doing this technique helps refine the sketches even more), before starting the outline, I mapped everything out with the thinnest pen (0.1) to create a thin outline so that I can over and improve the quality of the lines even more with 0.8 on the inside and a mixture of 0.5 and 0.3 on the inside.

Fine line work

Before adding the bright colours to the rendering, I decided to make my wood grains first for efficiency as I would not need to change the colours of the markers more times than needed. I did the wood grains by rendering, as usual, using brown then I went in with the soft black pencil making streaks and lines imitating the grains of the wood I found off of Google; after finishing with that I slightly swigged and smudged the lines more making it look more realistic than adding more shadows for depth in the sketch.

--> add pics of the copic used + materials used in the rendering process

Rendering and shadowing work (on marker paper)

Digital Rendering

After sketching and rendering physical copies of the mosquito coil holders. I decided to develop them further by taking some of them digitally and chose 6 of the the 18 designs I made slight edits to them and changed some parts to make it more aesthetically pleasing and more to my liking.

Blue pencil sketch

Fine line + inking

Rendering

Adding shadow

Details:

Adding a photo of the desired wood grain I then masked the photo and reversed it and cut the photo to fit the outline. I then added a soft shadow to the edges where it would naturally be darker as the sun hits at an angle (using the soft brush in black with the opacity turned down). I then added some highlights near the edge where the shadow is to make it look more dimensional.

Using the same rendering brush (real marker) and turning the opacity down to about 15% I lightly put pressure/weight into the stroke and did the streaks along the resin part to create a made-up reflection which happens in real life when the sun hits a flat surface and there are lines across the surface. This suggests that the surface is shiny. (makes it realistic)

Using the same technique masking the resin texture in the bottom while actually rendering the top. Then using a thin highlight brush, and also turning the opacity down I used light streaks to create highlights near the edge. I tried to slowly fade the line into the middle where I put more weight on the brush stroke then slowly faded the stroke off. Also, adding shadow to the edges.

Explanations:

Finished Rendering (summary)

I started by reviewing your work closely for any details that need refining or enhancing. Using Procreate, I decided to use the mask tool on some of the pieces and covered the work with a resin texture for a better finish making it look more realistic and much more like the real product. After masking and cutting the parts that did not have resin, I started to add shadows to create more depth in the products, adjusting the colours, texture, and lighting for a clean look. Then finally I added highlights to some corners of my work for a realistic feel.

Development

Globe:

The first step I did was to choose the pieces of foam I needed for the foam model, where the foam size would need to be slightly larger than the mosquito coil. I then drew small sketches of what I needed to do and the measurements of the foam.

Using the calipers, I measured the radius of the foam (40mm) and then drew the circle marling out where I needed to cut the foam to make it into a circle, but before cutting it into a circle, I cut off the small pointy parts that would make it harder to use the wire cutter

While using this tool, I would need to be careful with my hands because the wire where it cuts the foam is really hot. After, cutting the small pieces off, I used the tool that cuts the foam into a circle, the tool pokes the hole in the center of the point of the foam where I want the center to be then elevated the piece of foam so that it was able to turn stably. After cutting the circle, I then proceeded to cut the circle into thinner pieces with a width of 10mm to fit on each side of the mosquito holder. As you can see the stand next to the foam helps keep the foam piece stable whole cutting without making curved lines, It also acts as a ruler as you can set the width and move the stand to be desired width.

After cutting the foam to the length, height, and width using the foam cutter. I moved on to using the calipers, measuring out the radius, and marking the piece of foam, I used the scroll saw to cut out the marked piece, then measured another radius from the same center and marked out the outline of the shape of the wood stand.

Finishing up with the scroll saw, I cleaned up the stand by sanding the foam to make it look cleaner and to fix some parts where it might not fit with the other peace. I then used double-sided tape to place all the pieces together.

Adding the finishing touches, I inserted a mosquito coil between the two foam pieces, I tried to aim for the center of the repellent to align with the pin then poked the pin through the center, then cleaned up all the other corners where there were still bumps. Here is the finished product of the globe.

What went well and What to improve:

The measurements of everything was quite good, and the size of everything was quite ideal, with the mosquito coil sticking out a little and the whole thing was not too big or too small.
While manufacturing, we could turn the pin using brass.
What I could have done better was to make the base a little wider for more stability.

Whale:

After cutting all the pieces up, I realized that I made a few mistakes in the measurements leaving some gaps and holes between the top and bottom parts which made it hard to stick so I decided to trace the top part and did the same thing with the new template.

from the design, there are holes in the top part, so I used the drill with a small drill bit to drill small holes in the shape of the outlined shape. After this, the hole still did not look clean so I used a knife to carve out the small pieces and cleaned the edges, i then used sand paper to smoothen out the curves, then used a small file for a more detailed finish.

Using the scroll saw which for me is more precise than the wire cutter, I cut out the cut outline shape of the top bit and then doing the same process I did with the top bit I stuck glue on top of the foam after prepping it I then cut the outline of the of the shape of the foam. I then used the wire cutter to cut the foam to 15mm thick making 2 separate pieces.

After cutting up all the small pieces, I sanded them all to fit the top part and then assembled all of them together using double-sided tape. For me, using different colour foam helps me recognize what materials I would use in the real actual product.

The first step I did was to prep the foam was to sand the foam using the sanding machine to create a smooth suface. I then drew out the shape of the whale and made lines and cuts to where the parts would need to be cut. I then used glue to stick it to the piece of foam; after realizing that I cut out the fin, I decided the mark the fin back in again.

finishing up, I then planned on how to make the two whale pieces stand up straight without tilting over, I decided to hold the two separate whale pieces together, and using the sanding machine I sanded the bottom to make it flat I marked out the length of the base width and the height (the length depends on each piece) where the other piece of foam would not be visible; after this, I used the scroll saw to cut out three pieces, one for the base, and one for each side (the front and back) where those two pieces would be curves to match the shape of the whale. The distance between the two whale pieces is 10mm, which is enough for the repellent to be placed there. Using the double-sided table I assembled all the pieces together.

Here is the final product. As you can see there are clear holes for smoke to get through and for ventilation, and as the dust from the mosquito coil falls it can be easily cleaned. From the photo, you can see that the support pieces in the middle go up the mouth and to the tail and it leaves space in the middle for the mosquito coil and the supports are just thin strips of the foam. The coil is held in place using the pin as I did with the globe.

What went well and What to improve:

The design overall turned out well, and the size does not look too big or too small compared to the mosquito coil.
To improve this, the holes on both side should be the same size, so when looking through it, there is not some parts of the wood that sticks out.
I need to make sure that both sides are the same size so it looks parallel.

Onshape:

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