Mixed Nuts and Bolts (aka “NUT JOB | Nut, Bolt, Washer and Threaded Rod Factory“) is a design shared on Thingiverse by Mike_Mattala under Creative Commons – Attribution – Share Alike (CC BY-SA 3.0).
We used the following printer and print profile settings to produce this part:
This print was chosen to demonstrate one of the most familiar and hard-wearing of items. While the use of nuts and bolts is very common and their availability widespread, 3D printing allows you to customise the properties to fit your unique requirements, no matter how specific. This could be diameter, thread, head, length etc., we can print things that you’d never see in the shops or online, things that only you need and that are the only thing to fulfil your specific need.
The critical part of these nuts and bolts is that the thread is accurate and matches their counterpart. To achieve this we chose to use our Ultimaker S5 Pro, an FDM printer, and printed at layer height of 0.1 mm. Printing them standing tall reduced our need for support material, which meant a more accurate print with a better surface quality. Tough PLA was the ideal material as the aesthetic quality was less of a concern, while the strength and durability was key.
The combined footprint of these parts is 60 x 40 mm, and the tallest part is 100 mm, and it all took three and a half hours to print. We wouldn’t recommend printing common sizes or other easily accessible parts, as this might not be the most cost-effective way to buy nuts and bolts, but it definitely helps to solve those difficult and unique problems. We advise against using this for load-bearing parts and suggest you find a more sturdy alternative, as these were designed to simply clamp items together that apply minimal weight to the prints.