Mailbox locks, also called RV locks, cylinder locks, desk and drawer locks, or cam locks, are not really designed for securing a door to a frameless body. People normally buy these to replace an existing lock, rather than for a custom build such as this one. This video demonstrates how to determine where to drill the hole, and how to modify the metal latch plate so that the door closes snugly against the box.
You can fine more pictures of the things I build on Instagram: https://www.instagram.com/thesnekkershow/
Tools and supplies used in this video include:
Keyed-alike cam locks: https://www.homedepot.com/p/Prime-Products-1-1-8-in-Key-Cam-Lock-4-Pack-18-3319/308492194
Fisch 7-piece forstner bit set: https://amzn.to/3Auy0tx
Freud 7-piece forstner bit set: https://amzn.to/3mDCpFL
DeWalt 20V cutoff tool (tool only): https://amzn.to/30DxTAb
DeWalt 20V angle grinder with battery: https://amzn.to/3F7EtxP
LENOX diamond cutting wheel: https://amzn.to/3mb49C8
Cordless Dremel: https://amzn.to/3Fn11ed
Dremel EZ Lock diamond wheel https://amzn.to/3E61iAK
Delta 8" grinder: https://amzn.to/3e3XWDG
Aluminum oxide grinding wheel" https://amzn.to/3p4jB4L
Retractable fine-point marker: https://amzn.to/3J3mcEm
This video is not sponsored. I paid for everything and used my own time. As an Amazon Associate, I may earn a small commission if you use the Amazon links to make a purchase.