I’m testing sketching in Rhino, but this will go nowhere if there is no such basic thing as an eraser. I was looking in many places but no hack or workaround for that. I’m posting it in a separate thread because this is just a general tool for trimming and deleting pieces of curves with a brush. Th…

interesting idea, I’ll circle back and ask you the same question our devs ask me whenever I propose something… what problem are you trying to solve? do you have any example files that show the problem or workflow that you are trying to develop?

The problem that I’m trying to solve is that if you want to draw anything you also need an eraser :wink: . Well, not every analog drawing tool supports that, but every digital one does. You showed the Testmarkup command, we could use it to draw something but there is no tool that would serve as an …

That would be a nice addition. I can imagine how this would work with curves and points. Would you expect this to work with other types of geometry?

Curves are the most important. Another use case that comes to my mind is erasing the whole objects - points as you mentioned, but maybe everything that “collides” with the eraser. There is a SelBrush command, but it works in two steps - firstly you select, and then you can delete the selection. I w…

[image] Jakub Czajczynski: There is a SelBrush command, but it works in two steps - firstly you select, and then you can delete the selection. I was trying to loop it in a macro, but the best I could do this way was just a rather poor workaround. I think it’ll be nice if the eraser only erase…

Yes, that’s the issue. It was just an example. One awful workaround that came to my mind with the SelBrush method is having curves stored as very dense polylines and erasing sub-objects. One more thing that would be good to have in the Eraser tool as an option. Specify the Layer that it is affectin…

I logged the request here: RH-83371 Eraser command Hopefully we can get something hacked together

I was about to write-up a similar feature request. Hope this gets added!

[image] Morteza Karimi: RH-83371 Eraser command Hi Can you make it visible ? Thanks.

It should be visible to everyone now

WISH: Trim Curves by Brush (like an Eraser)

Rhino Rhino for Windows

will (Will Pearson) July 15, 2025, 9:56pm 17

RH-83371 is fixed in Rhino WIP

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WISH: Trim Curves by Brush (like an Eraser)

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