I’ve been searching for a Negate button like in Roblox for hours. Does the Babylon.js Editor have a similar feature? How do developers usually make holes and merge meshes in the Editor? Thanks in advance! [bjseditor]

[image] Introducing: CSG2 loudspeakerAnnouncements The old CSG class was made of pure JS (it was a port from GitHub - evanw/csg.js: Constructive solid geometry on meshes using BSP trees in JavaScript ) and while it served us, it was not maintained and not usable…

Thank you so much! I was just hoping for a Negate button in the Editor, like in Roblox Studio. I ended up doing it with code by overlapping and subtracting meshes. Really appreciate your help. I’ve bookmarked this, there’s a lot of cool stuff to learn!

Keep in mind this does create quite a bit of geometry data and is not the most efficient way to make meshes. You can use it pretty well on simple shapes but if you go over on complexity it can compound fast.

Got it, thank you for the tip! I’ll keep that in mind and try to avoid using it on complex shapes. Really appreciate your advice! I’ve always been fascinated by polygons and how they shape everything in 3D now, I have so many ideas using PolygonMeshBuilder . I’ll be showing them on the Playground soo…

Hey @polymaxcube ! I just saw your post !! =O Merging meshes and CSG is not yet supported but I can add it to the next version if it’s still a need for you! Let me know and you’ll get CSG

Thanks a lot, Julien! Yes, this is still something I’d love to use. CSG support would be awesome :raising_hands: Really appreciate your help!

How to create a hole in a mesh like Roblox’s Negate button in BabylonJS Editor?

Questions

Pryme8 November 3, 2025, 3:36pm 2

Topic		Replies	Views
How to make holes in babylon box? Questions	8	2948	June 14, 2020
How to combine two shapes with different number of vertices into one shape as shown in the image` Questions	5	165	September 23, 2024
MeshBuilder and CSG2 Questions mesh , csg2	2	52	March 26, 2026
Introducing: CSG2 Announcements	64	2969	March 16, 2026
Subtract/Cut one mesh with another Questions	1	2193	November 19, 2020

How to create a hole in a mesh like Roblox’s Negate button in BabylonJS Editor?

Related topics