I would like to make a 3D semicircle, and then hollow out a portion of the middle, making a shape similar to a letter "D". I need to first make this shape, and then hollow it out. However if there is a better way to do this please tell me.

3D semicircle shape enter image description here

Hollowed out portion enter image description here

Thank you for any help

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    $\begingroup$ Add a text object "D" then convert to mesh? $\endgroup$ – AJD Mar 1 '18 at 19:16

I don't think hollowing it out is the advised way to proceed, booleans should be avoided.

Just start out with a flat mesh in the shape of the straight part of the D. Make sure it only half of it with the object center correctly positioned so we can symitrize it later

Dividide it at the desired proportions, or extrude a lower part corresponding to the desired letter width.

Correctly place your 3D cursor at the center of the shape and use the Spin operator to create half the desired curvature.

Then just let modifiers do the work for you dynamically. Add both a Mirror and a Solidify modifier to add thickness.

enter image description here

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    $\begingroup$ You answered this quicker than I could write a what have you tried so far comment. $\endgroup$ – batFINGER Mar 1 '18 at 18:55
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    $\begingroup$ Hehe. Indeed very poor question, but I was bored with my current work, needed to unwind a bit :) $\endgroup$ – Duarte Farrajota Ramos Mar 1 '18 at 18:58
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    $\begingroup$ What do you mean, rotate the view point? I think it is thw Middle mouse button by default. $\endgroup$ – Duarte Farrajota Ramos Mar 1 '18 at 19:07
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    $\begingroup$ You can customize that to be any other key combination, I don't have the default myself, I changed it to Right Mouse button drag. $\endgroup$ – Duarte Farrajota Ramos Mar 1 '18 at 19:12
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    $\begingroup$ If you have different question make another post, and before you do make sure to search first, in all likelihood someone has asked it before. blender.stackexchange.com/questions/353/… $\endgroup$ – Duarte Farrajota Ramos Mar 1 '18 at 19:20

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