Here is a rope rug I recently made for my girlfriend's apartment. It used eight 25 meter ropes retired from the local climbing gym. Not counting the time spend working out the design, it probably took about 1 hour to put together.
If you don't have access to a lot of short ropes, it could also work with one or two long ropes. The basic design is one long continuous path as the overlay shows. If you wanted to use a single rope, you would just have to cut a bit of the sheath and slice the core strands so you can put a sharp bend at the centre of each spiral.
For the filler between spirals, I cut the sheath halfway and then cut and pulled out the core strands. This was a bit of work. On the back it is all held together with strips of duct tape. If you had the patience you could probably stitch it together, but this would take a long time.
FrankPS wrote:Nice work, Danny. Not sure I understand about the "filler" and cutting the sheath. Why? (or how)
The why is because the rope can't make sharp bends like that when it has the core inside it. To twist back and forth you have to pull out the core strands and just switchback the sheath.
The how is by basically self inflicting a core shot. You cut the sheath through halfway at the point that you want to start pulling out the core. Then you grab all the core strand and cut them and either pull them out through the far end or through the cut.
Did you sew them by hand? I can't really imagine how to fit the ropes wrapped up through a machine :)
Btw, I love how you set the circles out of symmetry, looks more natural in that way! I can see similar idea can be implemented on: mouse pad, beer glass pad, etc!