“When you are racing against your own biology, the story is just the exhaust ; the science is the engine and our time is the fuel .”

Gerard Ziemski // halfmarble founder

"The only tool we have to manage our own slice of PD hell."

I am not building for a market. I am building for a race. Whether it's hardware to stabilize a trembling hand or software to track the science behind cellular repair — these are the mechanics of survival.

System // 01 // Hardware

SteadyHandTool

A high-stability SMD soldering aid designed to dampen tremors. Born from the need to keep tinkering when biology tries to stop it. Open-source because community is the only way forward.

● CERN-OHL-S-2.0 (OPEN SOURCE)
● HIGH-MASS VIBRATION DAMPENING
● BUILT FOR PRECISION PCB WORK
COMING SOON TO CROWD SUPPLY SEE THE HARDWARE
System // 02 // AI

Autophagy AI

A technical solution for a biological war. This isn’t a lifestyle app; it’s a specialized fasting engine grounded in the latest autophagy research. The science is the engine — we just built the dashboard.

● AI-DRIVEN STATE ESTIMATION
● NEURO-PROTECTIVE PROTOCOLS
● SCIENCE-BASED FASTING ENGINE
SEE THE ENGINE