So here's my version of the Corky's Breast Plate I made for the guys in the states .
Brace is 1"sq 304 stainless steel 1/16th wall , weighs in at 6.85 lbs. Will include stainless A2 hardware either 6 button heads (5mm) and 6 bonded washers OR 6 flange bolts (13mm head) that will be your choice . This brace "doesn't" have the 3 holes cut for the plastic tube holders . I deem them un-necessary .
Here's a pic of them ready to go to get the 6 holes cnc'd in .
(https://i.imgur.com/Wy7Nj40.jpg)
Here's one mounted
(https://i.imgur.com/GZ7ksE6.jpg)