| Condition | Description | Reasons | Solution |
| Condition | Internal Cracking | Due to excessive shrinkage stress in individual layers of thick-walled products, bosses or ribs. | Reduce the feeding area so that the fibers are better interwoven between the layers and reduce the molding temperature. |
Condition Description Reasons Solution 1 if there are too many small holes in the surface it ……
Comparison Hand Lay Up RTM SMC/BMC Molding Temperature/℃ indoor temperature 40-60℃ or i……