Ark for Transformers Cybertron Primus

Right out of the finale bits of Cybertron, the four legendary starships converged to transform into the Ark!

Almost as long as Primus is tall, the Ark turns into a mega cannon which Primus used to save the universe!

On its own, we've paired it with a simple stand which it can be balanced upon - giving it the illusion of flight in space.

The Autobot insignia adorns the front of the Ark, and coming around to the rear portion, we've designed the handles to be slid inwards and stowed away for the Ark's starship mode. These then simply slide outwards allowing Primus to hold onto the Ark in cannon mode!

Since it's a starship, a twin pair of boosters have also been added which can take 5mm effect parts for more dynamism!

On the same token. the little top mounted cannon also come with its own 5mm port for effect parts to be used!

Given that the main purpose of the Ark was as a mega cannon, the front insignia was made to flip backwards revealing a hollow where an additional effect part holder can be slotted in. This would complete the look of the Ark Mega Cannon in action!

To reset the insignia flap to its original position, one can either use a magnet to pull it to the front. Or, by lifting it upwards, use a stick to first push out the effect part holder and the push the flap back into position.

Just for a bit of fun, did some shots of the four starships (available here: https://www.patreon.com/posts/151531761) coming around to combine into the Ark!

=== Assembly ===

The included diagram shows how the parts which make up the Ark and how they are assembled.

The pegs required for assembly are also provided as 3d printable parts, though a short segment of 1.75mm filament cut to size is required for the front InsigniaHousing part.

The rear of the Insignia also has a 5mm cutout for adding a magnet if you prefer to use a magnet to pull it back in position after use. It's advised not to glue the InsigniaHousing down in place so you can still lift it up to reset the flap with a stick as needed.

The stand is made up using these three parts. When assembled, you'll just need to rest the Ark with its rear most portion of the Bottom Fin aligned in the provided slot.

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Hope you'll all enjoy creating and adding this legendary starship and weapon to your Primus' too. Happy 3d printing! =)

[25 July 2026 Update]

To make for easier printing of the Insignia Housing part, we've included a variant version with the fins separated, so you can print and assemble these files instead:

• InsigniaHousing-Split

• InsigniaHousing-FinL

• InsigniaHousing-FinR

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This model is not to be uploaded or sold in any form and is intended for personal use only.

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