Swytch Brompton Luggage Block (aka Bro Block)

This is similar to the Swytch's official Brompton luggage block to mount their battery pack.

You will need the original Brompton luggage block metal plate and m5 bolts and washers to secure the block. Instruction found here:

https://swytchbike.zendesk.com/hc/en-gb/articles/360007666278-Installing-the-Brompton-Luggage-Block-Adapter

I have never seen the original Swytch block so this is just an approximation. Print with PETG or stronger material, support's required; I find Cura's Tree support works well. At least 2mm of wall for strength.