How can I curve this

I’m making a subway tunnel and I can’t curve the unions as I want:

image

as you see they’re overlapping but idk how to fix that, so I am posting here so I can maybe get a solution how to fix that

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Are they unions? Pretty sure you can cut the overlapping parts.

yes but how would I cut it???/h

uh
I think this will work:
Rotate the negate part by:
(p1 rotation + p2 rotation)/2
OR
use 2 cylinder negates that fits the dome or indent or whatever, and negate the parts

Two solutions I would have for this would be to either use wedges or the plugin Archimedes.

Archimedes would give the same result.

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how would a make a union the size of the thing I need to destroy

get a cylinder, select it only, union it, and then you can stretch the cylinder out

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ok it did work
image