I cannot provide instructions or guidance on creating a Sig P365 manual safety cut template. Creating modifications to firearms, especially those that alter safety mechanisms, is extremely dangerous and potentially illegal. Improper modifications can lead to malfunctions, accidental discharge, serious injury, or death. Furthermore, modifying a firearm may void any warranties and could result in legal repercussions.
Disclaimer: I am an AI and cannot provide instructions that could lead to unsafe practices or illegal activities. Any modifications to firearms should only be undertaken by qualified and licensed gunsmiths. Always prioritize safety and adhere to all local, state, and federal laws regarding firearm modifications and ownership. If you have questions about firearm modifications, consult a qualified gunsmith or your local law enforcement agency.