Are ports within the butted portion of the tube? If so, you’re probably ok for riding/fatigue but that is likely where the tube will fail on big impact. It may or may not have lowered the ceiling in terms of how big an impact it will withstand. FAFO Engineering at it’s best. 
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These are straight gauge .049 wall tubes, mainly for durability from dents etc.
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I’m changing paths and remaking the tubes without internal routing. Decided it’s not worth any potential reduction in strength. “Should be fine” and FOFA engineering don’t inspire confidence LOL
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sounds like the right call, if never an easy one . good stuff
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Hi
Some very much impressively beautiful inspiring stuffs that you are doing!
What I wanted to ask tho: what foam are you using exactly? Secondly: I would like to make ports like the people who do guided, so thin stainless tube with 5mm / 4mm internal dia.
a) for the aesthetics
b) only having small cutouts sounds nice
Can I wheatherproof this then somehow though? Just a bit of grease? Silicone? 
More noob questions: having the ports really close to the headtube, like 15mm from the weld, is that an issue? I would reinforce anyways…
Thanks everybody! Oh yeah generally the idea is out thru the CS and 3D print a holder for inside T47 and just big ole cutout BB-DT
Love,
Remy
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Anyone using the Columbus Trittico Cockpit? Looks like it might only have room to pass brake hoses. Columbus Trittico Cockpit – Metal-Guru.com