Extruded cut on ellipse

Hi I’m newbie in umake. Could you please advise how to make an extruded cut on the ellipse shape. size is 70mm w x 88mm L x 26mm into 70 x 88 x 13mm.

Firstly I used revole to create the ball in 88mm diameter , then I adjust the wdith and height to 70 and 26 presnetatively.

But i can’t make the sketch on the curve surface it says “unable to create sketch on non flat surface”

Can you help to provide a method?


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Hi @Remyyan,

Thank you for reaching out!

At the moment that won’t be possible, BUT, happy to say that we’re already working on it and you’ll be able to cut 3D surfaces (very) soon (you’ll be able to sketch curves and closed curves on the surface using the ‘Precise’ and ‘Pen’ tool and then to erase those surfaces to create holes/cuts).

Hope that answers your question.


Evi, this is great news. As a sculptor using design software for the first time attempting to cut a hole in a non-flat surface was one of the first things I attempted.

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Hi Evi,

It will also be a great feature if we are able to do Boolean with 3D shapes. :slight_smile:


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In the works :slight_smile:

Did this ever get implemented?

Hi @joemanzari - yes, that was implemented a few months ago. You’re able to draw a closed shape on a 3D surface, then select that closed area and create a cutout of it on the 3D surface. It’s a bit different then a Boolean “Substruct” command, as this only erase the closed shaped on the 3D surface and doesn’t cut through the whole volume of that 3D surfaces object.

I hope it makes sense.