Week 3 - "Home"
Ideation
Tell us about your assignment's idea for this week. Why do you care about this idea? What inspired you? (Please include images or links to sources of inspiration)
The assignment this week was to design a pen and pencil holder.
Technical Requirements:
The model is designed and assembled using Fusion 360.
The model contains at least 2 compartments.
The model utilized at least one jointing technique (T-slot and/or Bracket with Captive Nut).
The model is fully designed for fabrication using Laser Cutting (except for brackets using 3D Printing).
The parts of the model are prepared for fabrication by applying proper fabrication parameters.
The parts are fabricated and assembled using M3 screws and nuts.
In my work office, I have a Nubian house-shaped pen holder so I wanted to make the pen holder with the same design or idea so it wouldn't be so odd when put together, so the main idea was house shaped holder then I thought of what I want to put in it, so pen and pencils were the base then I add a place for sticky notes as they are always thrown somewhere so they need a place and I started to design that way after sketching I found a space its width fits perfectly the mobile so I build a simple bridge and now it contains a mobile stand.
Tool Chain
Which software/machines/materials did you use in the assignment? Why?
laser cutting
designing: fusion 360 software.
preparation: laserwork v6,rd works v8.
machine: El Malky ML149 CO2 Laser Cutter.
material: plywood 3mm.
3d printing
designing: fusion 360 software.
preparation: ultimaker cura 5.2.1
machine:PRUSA i3 MK2 3D Printer.
material: pla+ filament.
Design/Preparation Process
Explain the design and/or preparation process of your assignment. How did you use the tool or software to design and/or prepare your assignment before fabrication/implementation?
first, I made a quick sketch of the holder with the parts I want and then searched for the standard dim of the holder, sticky notes and mobile phone.
then i started modelling it on fusion
design phase and file preparation:
i started with the face and the back parts as they are the shaped faces and the others are just rectangles to hold the body together.
then sketched the two inner sides then the outer 2 sides and the 2 bases, then i started to put the taps and slots and projected them to the opposite sides and extruded the faces 3mm and extrude cut the bolt holes with diameter 3mm.
Each part was a different component so we had to join them together to make sure all the parts are sketched with right dimensions and to see the final product and if it's ok, then it is the time to export each component as dxf to prepare them for cutting.
file preparation:
imort the dxf files
change the speed and the max and min power depenting on the mode of thr layer
(cut: power min and max 55 and speed 30)
( speed cut: power min and max 30 and speed 300)
stimulate the laser cutting.
export the file as rld
download the file to the laser cutter and start the file.
holder 1 lasercut.mp4holder 2 lasercut.mp4Development/Implementation Process
Explain the development/implementation process of your assignment. How did you use the machine/tool to manufacture or implement the design of your assignment?
to laser cut the parts:
make sure all the parameters is right and the file format is rld.
put the plywood sheet and fix it with tape if needed.
open the machine and relocate the origin and check the focus.
download the rld file to the machine and frame it to ensure its dimensions and orientation are right and it fits in the sheet.
close the lid and start the file.
WhatsApp Video 2023-02-05 at 14.06.03.mp4after cutting all the files you should have now 8 parts and 6 bolts and nuts 3mm (1st pic)
assembling the holder was a bit hard so let me mention the arrangement of the steps:
assemble the three inner parts ( the small base and the 2 sides with the t slots) (2nd pic).
assemble the front and the back to the slots of the 3 connected parts (3rd pic).
connect the body to the 2 outer sides with the X-slots (4th pic).
connect all the parts to the base with the t slots (5th pic).
last put the bolts and nuts and you made it.
Notes:
there is a place for 6 bolts but actually 4 is more than enough.
if you want to use a bracket the first place you will think of is the middle of the back as it is the larger side and a hidden face to put the bolt but if you do so you should use a captive nut bracket and assemble it to the base part only until you assemble all the other parts and then screw the back part bolt at the very end.
you could assemble the outer sides to the base first and then put the other parts on it, it will lead to the same result, but I found it easier as I mentioned above.
Overcoming Challenges
What kinds of challenges or problems did you face while doing the assignment, tutorials, or exercises? How did you solve them? Did you ask for help from an instructor or peer? Please provide a link to the tutorial or article that you used to solve your problem (if any)
choosing between ways of connecting was a bit tricky I mixed between T-slots and taps and X-slots it was joined perfectly on fusion but when thinking of its assembly in real life it was impossible in any arrangement, at first the inner sides(1st pic) were sketched with x-slots facing up similar to the x- slots of the outer sides(2nd pic) so to assemble it i thought we will assemble all the sides and the small base to the main base then slide the face and back in the x-slots and its done but the t-slots in the middle base (3rd pic) would have prevent the back from sliding there so there was two ways, 1st to cut these t-slots and connect the smaller base with the inner sides only and the 2nd to change the X-slots in the inner sides to t slots and i made the 2nd one it was more like trial and error but as you can see it's already assembled so problem solved.
Weekly Digest [OPTIONAL]
Tell us about any other cool things that you've made this week: in the Hands-on activity, tutorial examples, exercises, or any other cool mini-project that you tried out aside from the assignment.
EOWeek Session lantern:
it may seem easy but finishing it on time was a bit challenging it was our first time practicing T and X-slots and captive nut bracket and a team I never worked with so it was hard at first but at the end we made it and I am proud of that.