mwarddoc

Have any of you taken a vintage lugged steel frame, from the 80's or so, stripped it down, cut off the braze fittings, and redone it with internal routing of brake cables and DI2?

Is it possible?

I know it is possible to remove everything, but the install I'm curious about.

Is there enough clearance at the bottom bracket for the cables and junction box to be inserted into the down tube?

Is it safe or does drilling the tubing dangerously weaken the tubes?

Along the chainstays I'm assuming would need to be externally routed cable for the derailleur in any case.

Thanks for any information.