Ultimate Robocup Companion Add-on (URCA)

Please read before downloading the model!

I put a lot of effort in designing this model. I'm giving it for free, but:

• Please consider supporting me by making a donation on Ko-fi!

• Please if you can, leave a comment with feedback, suggestions, and photos on set! I would really appreciate it :)

2025/03/03 Update v24: Added another hole on robocup side for reduced weight and filament usage. Changed the shape of the holes on the phone slot back panel for easier printing with no bridges. Increased hole size on the bottom of pen slots for easier printing.

2025/10/25 Update v25: Going public! Added files for pre-programmed bi-color / fuzzy skin versions.

The Ultimate Robocup Companion Add-on (URCA)

(The pictures suck, i know! I'm working on it :p)

To all of you 1st and 2nd AC's, video assists, DITs and Robocup enjoyers alike I present my first-latest creation, the URCA.

There's not much to say about it: it simply holds your phone, a bunch of markers or tools and a belt clip accessory like measuring tape or a leatherman multitool - and looks very stylish while doing so.

The inspiration came from this excellent model by @EricU_224846 but I designed this from scratch.

Operation

To mount it on the robocup, roughly align the notches with the holes and slide it up from the bottom. It snaps in place on the holes of the robocup. To remove it, slightly widen it from the top by pulling both sides and then pull down. 

Don't try to force it in or out horizontally!

The phone slot is 82 (w) x 12.5 (d) x 130 (h) mm, it should accomodate most average sized smartphones with or without a cover. I haven't tested it with big phones yet.

Printing

I print these in PETG because I think it's more reliable than PLA for set and exterior use.

During early prints, I noticed the part would start warping and detaching from the bed at around 20 mm height causing some failed prints so I strongly recommend using an enclosure with at least 30°C to avoid this.

Print upside down. 

Make sure to print with 3 perimeters! 2 is too weak/flexible and 4 is wasted filament.

I always print this with fuzzy skin in the areas shown in the following pictures (pictures from an earlier model). It really changes the look and feel of the part, and I can't recommend it enough. I use 0.1 thickness and point distance. Since it takes a bit of time to paint it this way, I included a painted .3mf.

Supports

You can probably print it without supports, if your printer and filament are well calibrated. The longest bridge is roughly 50 mm. 

In any case avoid at all costs placing supports inside the marker/tool holes, as these will inevitably get stuck inside.

If you don't fully trust your bridges you can add supports manually in the areas shown below (pictures outdated sorry). I also included these pre-painted in the .3mf files.

If anyone's got any advice on how to better design the bottom of the ‘marker/tool’ holes (or any of the bridges really) to print without supports, please send me a message! I know some parts don't print exceptionally well..

These are the print settings I use (0.4 nozzle):

• Layer height: 0.2 mm

• Perimeters: 3

• Top/bottom minimum shell thickness: 1.1 mm

• Fuzzy skin: 0.1 mm thickness, 0.1 mm point distance

• Infill density: 15% 

• Infill pattern: Gyroid

• Top/bottom fill pattern: Monotonic

• Automatic infill combination: on (100% max layer height) - saves quite a bit of time

• Solid infill treshold area: 10 mm2

• Brim: Outer only, 4-5 mm (It will probably stick to the part but I recommend it for stability, just remove with a sharp blade)

• Speed: 90 mm/s internal perimeters, infill, solid infill, supports; 
  60 mm/s small perimeters, external perimeters, top infill, gap fill; 
  30 mm/s bridges, 
  300 mm/s travel; 
  60 mm/s first layer

• Extrusion width: 0.42-0.44 mm

• Infill/perimeter overlap: 15%

Versions

I'm planning to include both left and right versions on this page at some point, right now I only uploaded the LT. If you want, you can try to mirror it to have it on the other cup (but this wasn't tested by me). 

I am also developing another robocup accessory, which will be more compact and modular! Stay tuned

If you want to sell this, send me a message and let's make a deal

Please consider supporting me by making a donation on Ko-fi.

My name is Luca Scassa and I'm a 1st AC from Rome, Italy. You can find me on Instagram @non_solo_noia. Let's get in touch!

If you print this please share and leave a comment with feedback or suggestions. Please also post some photos on set! I would really appreciate it :)