Technology can replace lost body parts or even add additional parts to gain new function. Once a part is obtained, any crafter capable of crafting the part knows how to perform the installation. Installation takes 6 hours, during which the creature is left unconscious. Adding a limb you did not have before is an additional cost of 2,500 each and the installation takes twice as long. These parts can only be healed as objects.

For a standard rate of 500, any Cog can perform a Tier 1 Ritual on you after the part is attached. Once they do, the part becomes a living part of your body and can be healed by all normal means of magic. If you have added multiple parts, a single Ritual will affect them all.

Each limb can be modified to have a single object of up to half their Bulk built into it for 250 + the cost of the object. The object is attached to the limb by moving parts that can be controlled as an limb. If the object is 1/3 the limb Bulk or less, it can be stored inside the limb.

Parts can be added onto a non-living mechanical body. Each size 0 form is 12 Bulk of steel, Craft Level 2, includes a torso and head, and costs 500. Parts must be bought to complete the form. For each size larger than 0 the form is, the cost is triple the last size. Workers cannot speak and do not need to sleep. Consumes 1 + double sizes over 0 Energy per day. Can store 10 + 10 x size Energy.

Each form has 4 mounts for arms, legs, wings, tail, or tentacles. Additional form mounts can be added for 500 each. Each head has 2 ears and a mouth and 3 mounts for a beak, eyes, horns, or a nose. Additional head mounts can each be added for 100. Ears, eyes, and nose each grant 2d12 on Awareness with their sense, and the worker cannot uses other senses.

Each arm can have a claw, hand, or pincer attached. Each leg can have a foot, hoof, or talon. Each tail or tentacle can have a stinger, pincer, eye, horn, or fangs.

Mechanical workers have functions to define their movement, actions, and abilities. When assembled, workers have 12 points to be assigned to functions. Additional points can be added for 250 each. Up to 3 points can be assigned to a specific function. You can add a fourth point to a function that has 3 points for 375. Each point beyond that costs 50% more than the last point added. Points can be added after the worker is assembled. The worker will follow their creator's commands for any function it has points in. Additional creatures can be added to accept commands for 1 point each.

Each secret door is a unique way to hide areas of a structure. The DL to find the door can be as high as 18. The Craft Tier of the door is half the DL. The cost of the door is 100 Souls x the DL. The second half of time spent crafting a secret door must be at the location the door is to be placed.