This week's assignment is to design a model of a pen holder that rests on a flat surface using Fusion 360. The pen holder should consist of multiple 2.5D parts, and contain at least 2 compartments to hold different stationery items. The multiple 2.5D parts should be assembled using joints and fabricated using laser cutting.ย
I searched online for inspirations to start designing my pen holder. I really liked this camera shape pen holder because I love photography and I thought it would look really cool on my desk, so I decided to design it.ย
Design ๐
First, I googled pen holder dimensions to get the measurements that I need for my design. Then, I used Autodesk Fusion 360 to design the pen holder's multiple parts as 2.5D to laser cut them.ย
Preparation ๐จ
To prepare the pen holder for fabrication, I imported my .dxf files to LaserWork V6 and made the needed adjustments for laser cutting, scanning, and speed cutting.
Fabrication ๐จ๏ธ
To fabricate the pen holder, I used El Malky ML149 CO2 Laser Cutter to make my multipart design on a plywood 3mm sheet. Finally, I used M3 screws and nuts to attach the parts together to the base.
I used Fusion 360 to create the pen holder multipart sketch to laser cut them. I started by looking for pen holders' standard dimensions online, and I decided to make it look like a camera shape with 7 parts and containing 3 compartments. I also decided to assemble the parts using the T-slot joints.ย
Then I created a new component, a new sketch, drew a rectangle, and created the T-slot design for the M3 screw and nut. I used several constraints for the design, such as coincident, collinear, midpoint, and horizontal/vertical. I made sure the part was fully defined, and I repeated the same process for the rest of the parts. The front part was a little different, as I didn't add any screws because it would ruin how it looks. Also, the base/bottom is where the other parts assemble, so I used the project tool to create the grooves and drew 3 mm circles for the screws and nuts.
Next, I made sure that everything was fully defined and in a separate component for the joint assembly. Then, I extruded each part into a 3 mm 2.5D part, changed their appearance, grounded the base, and assembled each part with a rigid joint. Finally, I exported the multiple parts in *.DXF format using the Save DXF for Laser Cutting plugin. Also, I used LaserWork V6 to prepare the pen holder parts to laser cut and saved the file in .rld format.
I used LaserWork V6 to prepare the pen holder to laser cut the design. I started by importing the .DXF design into LaserWork, then moved it to be right next to the origin (the green square). Also, I set the settings to cut mode with speed 10 and power 65. Scan and speed cut were set to appropriate parameters as well. After that, I checked the preview, and everything looked good. Finally, I saved the file in .rld format and put it on a flash memory.ย
To fabricate/laser cut the pen holder, I downloaded the file to the machine and used the arrow keys to select my file. Then, I placed a plywood sheet in the laser cutter and adjusted the focus. Also, I made sure that the origin was in the right place and tracked the frame of the laser cut to make sure it would fit the plywood sheet. Finally, I closed the machine's cover and pressed on start.ย
I faced an issue with the x-slots or corner joints, The dimensions of each side are 5 mm, and it should have been 3 mm, and the parts didn't fit together quite right. I asked the instructor, and she recommended adding more screws and nuts. I initially made just one T-slot, but then I added 6 T-slots, and now the pen holder is very steady.ย