The idea came from this shape when I was looking for a simple desk organizer. But since I prefer sharper designs, I modified it slightly by extending part of the base to function like a coaster.
Below are the soft wares and the machines I learned to use this week and they helped me to do the weekly assignment
RRDworks V8 software to perpare DXF files for CNC laser machine and saved the file with RLD extension
laser cutting machines
fusion software
Ply wood material
Inkscape software
First, I created a component for the initial face of the pen holder. I started by sketching a 100×60 mm rectangle, then added a 6 mm offset in all directions to create an X-slot. At the bottom of the rectangle, I designed a 3×10 mm tab, followed by a T-slot for an M3 screw, maintaining a 5 mm gap between the tab and the T-slot.
Then I extruded it by 3mm and copied/pasted this shape into a new component for the opposite face
Next, I began designing the back part of the pen holder using the same dimensions as the sides, but with the X-slot orientation reversed. I also extruded this by 3mm and copied/pasted it into a new component to create the opposite face.
Then I started designing the smaller part with dimensions of 56×50 mm, adding writing sections on both sides measuring 3×10 mm. After extruding this by 3mm, I again copied/pasted it into a new component
I proceeded to design the side panels with the same dimensions but incorporating T-slots, repeating the previous steps to create matching copies. The final step was projecting the tab and T-slot locations onto the 110×300 mm base plate.
Throughout the face creation process, I kept joining the surfaces. Finally, I joined both assemblies to the base plate, took screenshots, and imported them into Inkscape to convert them to DXF format - adjusting the scale to create construction lines.
Using Inkscape software, I saved each design component as a separate DXF file.
Then I uploaded all files to RDWorks, including the Inkscape-created drawing which I placed on one of the faces in the software and configured for scanning.
When I showed our instructor Ahmed the design, he noticed I had made the box attached to the base with tabs. He suggested changing it to T-slots for better grip."
I faced a real challenge early on - I started designing with the base first, creating tab and T-slot measurements, then projecting these onto the side panels. This approach completely messed up my dimensions. I also made the mistake of offsetting the sketch internally, which left my sketches not fully defined. To make matters worse, I was trying to incorporate the X-slot in the extrusion simultaneously.
soln:- I restarted the design from scratch after I messaged Menna and she suggested that I should first create the sides and then design the base with tabs and T-slots. So, I redesigned the sides of both models separately with the dimensions I wanted, joining each face normally. After determining the distance between each model, I made the base last, marked the positions of the tabs and T-slots, and it turned out perfectly.
Title of Media
For my final project, I'll need to figure out which component to design first to save time.
The unforgettable lesson? I should project from other components onto the base, not the other way around! 🤦🏻♀😂