Blog 4 Entry (3D Printing)😍🖨

So, we came out of 2 ideas for the shock absorber to be implemented in the final prototype. The spring idea is made out of a cone with a spring in the middle of it to be the shock absorber. But in the end, we decided to go with the butterfly idea. Because it is able to protect the egg's back, front, top, and bottom. Where compared to the Spring idea it will only be placed on top, bottom, left, and right and while printing it will take more time as it is required a spring to be placed at the center of the inner tube.

Ideas for Shock Absorber

After 3 attempts of making the butterfly idea, the 3rd trial run has the final decision as it was the perfect thickness to bouncer ratio. 1st trial problem is that throughout the butterfly the thickness is only 1mm thick which is fragile and breaks easily (as you can see in the picture), the middle part is sharp which will reduce the shock absorbent a lot. The 2nd trial problem is that the hook is 1mm

thick and throughout the butterfly, the thickness is 1.5mm which is sufficient to withstand the snapping of the butterfly, but since the hook part is 1mm thick it snaps easily when slotting in the slot. The 3rd trial was perfect as throughout the butterfly and hook it is 1.5mm thick which is better as nothing breaks when fitting it in the slot.

Butterfly Ideas

Then, we make the storage for the egg for safekeeping. In the 1st trial run, we did there a lot of problems to it, which is on how to secure the pillar and the top and bottom parts together. For the 2nd trial, the solution is to lock the whole thing together but have a slot machine that is able to lock it. For the 3rd trial run, I felt that having a 3-point contact to keep the egg secure in 1 place is important. I figure this out by using the ladder rule which is to have a 3-point contact at all times to ensure you are secure on the ladder. But using the rule I apply to the egg which leads me to have a ring at the center to keep it more secure.

Storage of egg for safekeeping

Next is to decide on how to place the butterfly shock absorber on the top and base of the storage. The 1st trial problem is that the slot at the top and base of the storage is too small and it is unable to fit the butterfly shock absorber. For the 2nd trial, I make the hole for the slot a little bigger and I did a test print to ensure that the butterfly shock absorber fits it nicely.

INSPIRATION IDEAS DESIGN

We took 3 different ideas that we found at GRABCAD COMMUNITY that really caught our attention. We only used 2 out of 3 ideas as we noticed there were some complications which we will explain later on. To add, we did not want to copy exactly what has already been made so we added some twists to the idea. We only ended up using 2 out of 3 to make it. So, the most important part is actually the storage for the egg to be placed. Its function of it is to ensure that the egg will be held in place and prevent it from cracking since that is the main goal.

How to use the 3D Printers in W-319?

• Startup of the 3D printer?

• How to setup the 3D printing in Cura?

• How to save g.codes (Creality Ender 3) and ufp files (Ultimaker s3)?

• How to clean up after using?

Infill shape:

Different types of infill shapes to be used in cura:)

Firstly in 3D printing at W-319

For Creality Enders 3

Step 1: Take the correct size (1.75mm diameter) of the Filament from the black dry cabinet or box.

Step 2: Place the PLA Filament inside the transparent dry box and using the cutter cut 45° angle of filament to insert the filament inside the hole by opening the valve at the side:

(as you can see Asraf is inserting the filament inside the hole in order to print the filament.)

Step 3: Preheat the PLA before using the 3D Printer as the bed and nozzle temperature must be at a certain temperature before starting to print.

Bed Temperature: 65°C to 70°C

Nozzle Temperature: 200°C

Step 4: Export the fusion file as STL files

Step 5: Go to CURA and select the correct printer name

Step 4: Upload the G-code file into the 3D printer's Secure Digital (SD) card, and insert it into the 3D printer.

Step 5: Find the files from the screen

Step 6: Press tune and tune the nozzle

Step 7: Take out the 3D printing. After it reaches 45°C or lower.

For Ultimaker S3

Step 1: Turn on the switches

Step 2: Turn on Ultimaker by flicking the switch behind

Step 3: Load the Filament roller onto the tray which is located below the Ultimaker and ensure the box is showing temperature values on the front.

Step 4: Unlock the filament inserting hole by flicking the knob up and inserting the filament. once the filament has been inserted into Ultimaker, flick the knob down to secure the filament.

Step 5: Click on the "load" option on the screen to load the filament into the printer

Step 6: Allow the filament to come out of the print core until it touches the base of the printer. Then use a set of tweezers to cut off the filament.

Step 7: Tap on Confirm once you cut off the excess filament which extruded out of the print core.

Step 8: When you are now on the home page, please select, "Select from USB".

Step 9: From the long list of 3D prints available, select your 3D Print design. and make sure to save as ufp files

Step 10: Tap on, "Start print", to start printing your design

Step 11: Wait for the print to finish and then click on "Finish Print".

Step 12: Gently remove the base glass plate from the Printer and wash it under the sink. The adhesion between the glass plate and the printed structure should decrease, making it easier to remove our structure.

ASSEMBLE THE PROTOTYPE

• Step 1: Secure the 4 pillars to the ring.

• Step 2: Insert all the slots into all the holes which are at the side of the top and base

• Step 3: Put the egg at the bottom base

• Step 4: Slot the ring that is secure to the 4 pillars into the center of the egg.

• Step 5: Secure the pillar to the slot which is already the side of the top and base

• Step 6: Once everything is secure. Place the butterfly by inserting the slot which is located at the top and bottom of the top and base.

Video of the egg drop

Initial Video

Final Video

Final Product

Reflection

• Doing early for this egg drop challenge has helped us a lot in the 3d printing for our device as we get to ask our seniors that are on FYP during the June holiday how to print and what is the right way to print. Thus, there are other lectures such as Mr. Ting and Dr. Noel to guide us on operating all the 3d printers in W3. Even though there were some setbacks like the printing did not go as planned, we did not give up but go into W3 to print again.

• Setting up and operating the 3D printer was not that tough after all after we got the hang of it. We also help our classmates with their 3D printing when they need help and guide them along on how to do so.

• There is a need for room for improvement in our design for our dimensions and even setting the range in Cura as our teacher Mr. Ting caught us by surprise last week that having a high infill and heavy 3d model (60g to 90g) for a small quail egg is too much which will cause minus marks in our design. But this didn't stop us as we went on ahead to change the infill at the last minute and manage to print out one of the correct ones.

• Even though our quail egg and the design did not break apart with the 4 support but we tried another experiment which is removing the 4 support as the butterfly shape was tied fit so as it drops the egg broke. Nevertheless, we learned that having support is important to protect the quail egg.

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