Building block Arrow

Just in case you can't find that lost bullet/arrow for the building-block cannon for your child, here is an option to replace it…

Or you can just make your kid's arsenal that much bigger like I did for mine.

One of my oldest designs!

Print instructions

Category: Toy & Game Accessories Print Settings

Printer: Prusa MK3S

Rafts: Yes

Supports: Yes

Resolution: 0.2 mm

Infill: 35%

How I Designed This

I used digital calipers on a Duplo arrow, lots of measurements, and 123D Design to assemble the model.

I found a great way of making my models in 123D Design that allows for modifications in the future should I need them. Binary operations in 123D Design cannot be split in a file that has been saved, then loaded at another time. (Binary operations are "Merge" and "Subtract".) As such, I copy elements before I perform these operations. This results in a file that looks like a step-by-step assembly diagram of the object. Miss a dimension halfway through the process? No problem - adjust the appropriate element and carry it through the steps to get your re-designed object!

At some point I may include my 123D Design model for reference so you can see this process, though I'm somewhat embarrassed to show my messy workspace! :-)