Week 5

Computer Controlled Machining

This week we learnt how to make SOMETHING BIG by using CNC milling for large scale manufacturing. I decided to build a hammock from the OSB wooden material we had in the Arch shop, to be able to make 'strings' to weave them together to a large scale furniture.

Designing

I designed and calculated the amount of wooden strings pieces using Rhino. I decided to devide the length of the hammock to 3 parts, to allow the curvature of the body when sitting/lying. After calculating the wooden frame sizes (4 feet by 8 feet) I calculated that the middle part will have the length of 1.8 feet, and the two outside part as 0.94 feet. The holes Diameter designed to be around 0.07 feet. Overall I had 24 parts of the middle parts, and 48 of the smaller pieces.

Mastercam file

For transfering the design into Mastercam, we could use the Rhino file directly from the same file I worked on. Zain helped me with arranging the file, where we chose each frame of each square + circle tthe right tool and right direction. It was important to note where the tool start, and also to see that the disances between the shapes is not overlapping.

Production

The milling part took around 25 minutes, where Zain helped me with processing the file into the milling system. We had to stick the OSB to the table with tape and have the vacuum work to make sure the whole system os stable for starting the milling! Because my file had more than 70 parts, we wanted to make sure that the tool is not cutting the entire part away from the machine. Afterwards, we adjusted the tool to be ab bit lower to allow more deep cut.

Assembley

The assembley part was the most time consuming stage, as I needed to sand the four sides of each of the wooden strings. The pieces were really rough and unclean, so i used the hand sanding maching in the Arch shop.

Processing

After finishing sanding most of the parts, Demircan helped me with the assembley part using a cotton rope. The idea at the beggining was to use the pieces in a vertical direction, but as I connected the pieces together, It was too small as I imagined, and the idea transferred to a horizontal assembley. It was nice to see different patterns that occured during this part, and i almost shifted my hammock to be a circular staircase chair :D

Building

The building part was also a time consuming stage, where I was struggling to find the right knot system to connect the pieces together, but still allowing some flexibility and movement of the wooden pieces. At the end, I used a embroidery backstich technique, where the knot is overlapping back and forth for a solid line. For the outline holes, I didnt used the same technique, but just inserted the rope into all the outside holes to allow more flexibility and curved areas.

Final result

Finally, after spending too many hours on embroidery all the pieces together, Demircan, Zach and Kim helped me to set it all up! It was really really heavy to lift it by my own. I was sure it wont hold me, but surprisingly it holded me in the air, having some 'rest' xD

INDOOR tryout!

OUTDOOR swinging!

'rest'

DONE