Giant lines in the sand are incredibly useful for pleasing the gods and hailing overpassing extraterrestrials. Beautiful, unwarranted spray-painted sidewalks might land you in detention with local law enforcement. Of course, why not have both? With the Sand-and-Spraychalk machine, you can!
The Sand-and-Spraychalk machine Is a moving two-axis CNC machine that can anoint its path with a spray of either sand bits or spray paint. As with any self-respecting power tool these days, the Spraychalk is driven by a rechargeable Bosch 18 V battery pack. As far as safety goes, leveraging an already-product-proven solution instead of cooking our lawns with questionable LiPos is downright clever.
Elegance is in simplicity, and the Spraychalk is no exception. The entire build is a collection of off-the-shelf parts mixed with a few laser cut plates and a one custom nozzle made of POM (Acetal). Precise spraying might sound like a hard problem, but it’s executed here with just a motor-driven cam and a couple levers. Finally, adapting a 18 V battery pack may seem like a form-factor nightmare, but our creator, [kallibaba], managed to pull it off with just a few laser-cut plates.
The Spraychalk rightfully sits next to its previously mentioned cousins that have graced these pages before. The next time we’re wondering just who vandalized your lawn so majestically, we know where to look!
8 thoughts on “Spraychalk Anoints Your Sidewalks With Precision Sandprints”
Show me a pavement that is flat enough for this robot to do its job.
“Beautiful, unwarranted spray-painted sidewalks might land you in detention with local law enforcement.”
I seem to remember IBM getting into trouble for this.
…why not have both?
Spray-painted sidewalks and a stint behind bars!!!
Swap the spray chalk for oven cleaner.
If ‘targeted cleaning of public spaces’ is wrong, I don’t wanna be right..
I remember a group of people using stencils and a pressure washer for such “targeted cleaning” for art or advertisment. There were even discussions in the newspapers, if this is legal or not. Is it a graffiti? is it damage of property. I think they did not get fined, but were not allowed to continue the campaign.
Or use that hydrophobic spray so it’s invisible, until it rains.
Artfully apply salt and sand to icy sidewalks.
Please be kind and respectful to help make the comments section excellent. (Comment Policy)