● Woodworking · Review

Bob Smith Industries BSI-131H Insta-Cure Th in Super Glue

Ultra-th in viscosity wicks into hairline cracks and checks in wood via capillary action

✎ PickHonest Research Desk▦ Updated October 15, 2026◷ 3 min read

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Bob Smith Industries BSI-131H Insta-Cure Th in Super Glue
Best Thin

Bob Smith Industries BSI-131H Insta-Cure Th in Super Glue

Bob Smith Industries

Ultra-th in viscosity wicks into hairline cracks and checks in wood via capillary action

  • Ultra-th in water-like viscosity
  • Wicks into hairline cracks
  • 1–3 second set time
  • Professional grade formula

Pros

  • Ultra-th in viscosity wicks into hairline cracks and checks in wood via capillary action
  • Sets in 1–3 seconds after capillary wicking, among the fastest th in CA available
  • Professional grade formula, used by woodturners and modelers for crack stabilization
  • Well suited to accelerator use for production work

Cons

  • Runs freely, cannot be used on open joints or rough wood without accelerator
  • Short shelf life after opening, oxidizes faster than gel formulas
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