Curious if anyone has experience with these?

https://framebuildersupply.com/colle...all-length-450

They have a smashed area for the braze on caliper mount that Columbus sells. https://framebuildersupply.com/colle...hain-stay-cast

I know it is not to scale, but it does not seem like this would end up correctly putting the braze on in the right place? Doesn't that smashed area (and braze on)need to be parallel to the center-line of the frame?

end use would be 142mm dropout width 425-430mm chainstays. Clearance for 40ish tire and 42 tooth single chainring.

Thanks

Life-Chainstay-tripple-bend.jpg