Use a "Great Stuff" style canned spray foam. Inject it deep into the crack and allow it to over-expand. Phase 3: Finishing
: There is a direct link between foam density and crack resistance; higher density foams (e.g., devfoam crack
that provides a 3D simulation of your G-code to check for errors before you waste any material. What kind of foam cutting machine are you using (4-axis, 5-axis?), and what types of parts Use a "Great Stuff" style canned spray foam