Foam Hole-Formers

  • Low Cost.
  • Ideal for limited-run productions.
  • ANY size or shape – flat or round wall.
  • MOUNTING MAGNETS available.


18″ dia. Parallel Foam Hole-Former for 6″ wall x 60″ I.D. (functional for “vortex” manholes)


64″ dia. Foam Hole-Former for 9″ wall x 96″ I.D. (custom cut for “split barrel” application)


2″ & 4″ PVC Septi-Seal Gaskets on “Ready-to-Pour” Foam Mandrels


89″ dia. hole in a 96″ I.D. manhole

Created by a Blackthorn FOAM Hole-Former


92″ OFFSET CORNER Foam Hole-Former for Flatwall (on a pallet ready to ship)


Challenge: Precaster needed a one-time use mold for the base of a column…


Our Solution: Mold made of multi-layered foam!