One of the more popular categories of 3D prints are SD card holders and caddies. These come in endless forms with dozens of results on places like Thingiverse and MyMiniFactory. Our new favourite in this genre of print, however, may be a unique Iron Man helmet.

Maker Mack Anderson has taken the MCU version of the helmet and filled the place a head would go with space for a total of eight cards – four each of regular SD and MicroSD.

This project started life as a remix, with the original uploader of the helmet design being Thingiverse user max7th. Their wearable version of the helmet is based on the famous Mark III design, and can still be downloaded here.

Anderson took this design and got to modifying it in Fusion 360. Aside from adding in the space for the SD cards, a geared mechanism was built in to neatly flip up the front of the helmet to access the inside.

This is done by pressing down on the “chin” portion of the helmet, which flips up the front plate. You can see a higher quality version of this demo below, as the one Anderson originally uploaded to Thingiverse was corrupted.

It took around two weeks to finalise this design as prototyping was needed to make sure everything worked as intended, as well as reducing the need for much post processing work.

Printing itself takes around 16 hours to complete with the final piece being close to the size of a tennis ball. Those interested in making their own could blow this up to a 1:1 scale print, but you’d either need to store hundreds of SD cards inside or using the extra space for something else.

With the supports removed and some light sanding done on the gears to make the movements smooth, the project was completed. Anderson opted to use the appropriate colours of filament to remove the need of painting. Just three colours – red, goldish yellow and a third colour for the base – are needed here.

This version of the helmet is also free to download from Thingiverse, but we always recommend being careful with this kind of print as untreated filmanent always has the risk of scratching up the metal contacts of your SD card. Proceed at your own risk (and remember to always have backups of your data).

Those not interested in Iron Man or simply want a solution with more slots will be interested in the last card holder we featured in January. This design takes the old Rolodex idea and adapts it to hold 24 full size SD cards.

Previous 3D Prints of the Day: