PolyBrush

2024

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Additively manufactured vibratory conveyor brush that reduces part damage on high-volume lines and can be validated in 5 minutes via an in-house fatigue rig.

Role & Scope: Owned Gen-2 parametric redesign (brush geometry + support structure) through QMS handoff; designed & built in-house vibratory durability rig; authored UTM/UV-Vis/metrology test methods.

Proof

Capabilities: FAI + SPC gating Designed & built vibratory durability rig

Business Impact: Deployed by Fortune-500 manufacturers and leading vibratory-conveyor distributors, resulting in $300k+ in first year sales

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Methods & Capability

  • Designed & built in-house vibratory durability rig; validation 2 weeks 5 minutes; transferred to production.
  • Authored & standardized test methods for cyclic hysteresis (UTM), tensile/tear (UTM), UV-Vis residue analysis, and design fidelity analysis (hybrid metrology system); methods captured in SOP and trained across operators.
  • Design Transfer: SOPs + Documentation for Print, Post-process, Quality inspection, Safety, and QMS handoff.
  • Integrated Quality Controls: (GR&R pre-check, FAI on recipe change, go/no-go gates) ensured repeatability and traceability within QMS.

Process

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Parameter Window

Parameter WindowPrimary ResponseControl WindowFailure SignalFirst Corrective Action
Brush GeometryHysteresis LossNarrowBristle fatigue or high hysteresis lossRevert baseline taper/profile + requalify
Support Structure GeometryDesign FidelityNarrowDistortion, support removal difficultyRestore baseline taper/profile + requalify
Print Energy DensityTear StrengthModerateIncreased bristle fatigue and reduced tear strengthReduce exposure one step within validated window + requalify

Additional Variables:

  • Slice + layer exposure filtering → Design fidelity; Signal: Distortion; Action: Move filter 1 step within validated window from baseline → requalify
  • Resin removal → UV-Vis residue; Signal: UV-Vis residue signal rises; Action: extend dwell time 1 step within validated window, or by one cycle → requalify
  • Dry-down → Design Fidelity; Signal: part distortion; Action: increase dry dwell 1 step within validated window, safely below Tg → requalify
  • Post-cure Energy → Tear strength; Signal: reduced tear strength + increased bristle fatigue; Action: increase post-cure energy 1 step within validated window → requalify