How to create a 1/2 cylinder in 3D with vertical ends

[gcoulter58 (Graham)]

I am making a travel backgammon board (i.e. foldable).
As such I need to carve 2 1/2 cylinder shapes in each of the game boards to hold the game pieces, (checkers).
It seems that the 3D round shape will give me a beautiful round shape for the length of the cylindrical shape, except at each end, where the 3D round function curves the ends. I want the nice rounded trough, but the ends need to be vertical.
Is there any way to achieve this, what am I missing?

[WillAdams (William Adams (Carbide 3D))]

First, tool geometry will limit how sharp the internal edges can be.

That said, one has to model the cylinder longer at least by its diameter, then the ends are squared up with a second element, see:

Trying to create a slope profile, whats the easiest way

While we could export an STL from that, to create this in Carbide Create we: draw a rectangle of an appropriate size: [image] Draw a rectangle for a pocket: [image] Use Linear Array to create as many as are needed spaced appropriately: [image] OK Duplicate the first in place: [image] Increase its height by its width: [image] and duplicate that as before: [image] Select the rectangle: [image] Model it as a block of the desired dimension: [image] [image] Select the rect…

[Tod1d (Tod (with 1 'd'))]

Model the groove with round ends

But use a smaller boundary to limit the 3D toolpath so it only cuts the portion you want

[Graham (Graham Murray)]

Thanks Will and Tod,that explanation helped me solve a design issue I have been having.

[gcoulter58 (Graham)]

Perfect, thank-you, a simple solution!