Main Point: You can just import a model (you may have to make a suitable one first) and make it print as support structure by using the Per Model Settings tool, if you want really fine control over your supports.
Asides/Bragging: Have you considered printing it leaning back a bit on a diagonal so Cura generates support for it?
Although sometimes you need custom supports so it doesn't go overkill on itself:
There's no way the sides would hold themselves up if the support was only in the centre. And if I left Cura to generate the support, it would have put it every-%^#(-where.
Also I needed to print it at exactly that angle because it let me fit the biggest disc possible inside my printer's build volume.
20 Slashee points for whoever can tell me what I needed the biggest disc possible inside my printer's build volume for (PM me if you're not replying to thread anyway so we don't derail it).
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GregValiant 1,364
I guess I can understand why you want to print it vertically to avoid the steps that would show up on the curve.
What you want is something that isn't covered in the standard supports. That flat part needs another piece that will be attached to it on the flat slide. It will grow with the print and stabilize it. Then you would trim it off when the print is finished.
Cura's supports are made to hold up roofs and you want to support a wall.
This is with a support blocker set to print as "Normal Model" that I rotated and then shrank in the Y. The sharp point just contacts the model enough to give it support as it grows. There will be a scar when it's removed.
You can get that joint pretty small.
Any support structure would need to contact the model or it won't work. Consequently any support structure is going to leave a scar when you remove it.
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