When Materials Betray You: Platinum Silicone, Wood and Chemical Reactions
Not all failures announce themselves immediately. Some reveal themselves only after time and money have been spent.
This stage centred on a specific problem: platinum-cure silicone reacting unpredictably with certain woods used in the laser-cut join prototypes.
The Assumption
Wood had been a reliable intermediary material for testing geometry and scale. The working assumption was that these prototypes could transition cleanly into silicone mould production with proper sealing and release preparation.
That assumption failed.
The Failure
During mould-making, the platinum silicone did not cure correctly in contact with certain wooden components. Some areas remained tacky. Others cured unevenly, compromising the mould entirely.
Preparation appeared sound. Release agents were applied. Mould boxes were constructed carefully. The failure only became visible at demoulding — when intervention was no longer possible.
Time and materials were lost.
Diagnosing the Problem
Certain woods contain compounds that inhibit platinum silicone curing. This is a known issue, but knowledge becomes different when it becomes expensive.
Sealants can reduce risk, but they do not guarantee compatibility. The failure was not poor execution. It was chemical incompatibility.
Not all materials collaborate.
Recalibrating the Approach
Once identified, the issue required strategy rather than persistence.
Responses included:
more rigorous isolation and sealing of wooden components
adjusting mould sequences to prevent direct contact
questioning whether wood was necessary at all
More significantly, some join geometries were altered to reduce surface contact, eliminate problematic recesses or remove wooden intermediaries altogether. Chemical incompatibility began shaping form.
Forcing the original designs would have meant building instability into the system.
What This Failure Changed
This stage reinforced:
chemical compatibility matters as much as geometry
abandoning a process can be more intelligent than refining it
material limits directly influence form
The project shifted from treating materials as neutral carriers of design to recognising them as active constraints. Some joins became simpler, not for aesthetic reasons, but to eliminate chemical conflict.
Failure here did not just slow the work. It redirected it.
What This Stage Establishes
This failure could have been omitted. Instead, it clarified the system.
The joins that progressed did so with greater awareness of the chemical and structural dependencies they rely on.
Failure here was not drama. It was correction.