Yes, exactly — the extra lines are what I was referring to. Those two solids are not being capped correctly in the Make2D result.
Here is my SystemInfo output:
Rhino 8 SR35 2026-9-8 (Rhino 8, 8.35.26251.13001, Git hash:master @ 3645d710f50175d8ebcf404aded5b042a481c23e)
License type: Commercial, build 2026-09-08
License details: Cloud Zoo
Windows 11 (10.0.26200 SR0.0) or greater (Physical RAM: 15GB)
.NET 8.0.20
Computer platform: LAPTOP - Plugged in [97% battery remaining]
Non-hybrid graphics configuration.
Primary display and OpenGL: NVIDIA GeForce RTX 4060 Laptop GPU (NVidia) Memory: 8GB, Driver date: 12-3-2023 (M-D-Y). OpenGL Ver: 4.6.0 NVIDIA 546.32
Integrated accelerated graphics device with 4 adapter port(s)
- Windows Main Display is laptop’s integrated screen or built-in port
Primary OpenGL: NVIDIA GeForce RTX 4060 Laptop GPU (NVidia) Memory: 8GB, Driver date: 12-3-2023 (M-D-Y). OpenGL Ver: 4.6.0 NVIDIA 546.32
Integrated accelerated graphics device with 4 adapter port(s)
- Windows Main Display is laptop’s integrated screen or built-in port
Secondary graphics devices.
AMD Radeon 780M Graphics (AMD) Memory: 1GB, Driver date: 12-5-2023 (M-D-Y).
Integrated accelerated graphics device with 10 adapter port(s)
- This device is not being used
OpenGL Settings
Safe mode: Off
Use accelerated hardware modes: On
GPU Tessellation is: On
Redraw scene when viewports are exposed: On
Graphics level being used: OpenGL 4.6 (primary GPU’s maximum)
Anti-alias mode: None
Mip Map Filtering: Linear
Anisotropic Filtering Mode: High
Vendor Name: NVIDIA Corporation
Render version: 4.6
Shading Language: 4.60 NVIDIA
Driver Date: 12-3-2023
Driver Version: 31.0.15.4632
Maximum Texture size: 32768 x 32768
Z-Buffer depth: 24 bits
Maximum Viewport size: 32768 x 32768
Total Video Memory: 8188 MB
Rhino plugins that do not ship with Rhino
C:\Program Files\Rhino 8\Plug-ins\Tibidabo\Tibidabo.rhp “Tibidabo”
C:\Program Files\Rhino 8\Plug-ins\Tibidabo\VisualARQ.rhp “VisualARQ”
Rhino plugins that ship with Rhino
C:\Program Files\Rhino 8\Plug-ins\Commands.rhp “Commands” 8.35.26251.13001
C:\Program Files\Rhino 8\Plug-ins\rdk.rhp “Renderer Development Kit”
C:\Program Files\Rhino 8\Plug-ins\RhinoRenderCycles.rhp “Rhino Render” 8.35.26251.13001
C:\Program Files\Rhino 8\Plug-ins\RhinoRender.rhp “Legacy Rhino Render”
C:\Program Files\Rhino 8\Plug-ins\rdk_etoui.rhp “RDK_EtoUI” 8.35.26251.13001
C:\Program Files\Rhino 8\Plug-ins\NamedSnapshots.rhp “Snapshots”
C:\Program Files\Rhino 8\Plug-ins\MeshCommands.rhp “MeshCommands” 8.35.26251.13001
C:\Program Files\Rhino 8\Plug-ins\IronPython\RhinoDLR_Python.rhp “IronPython” 8.35.26251.13001
C:\Program Files\Rhino 8\Plug-ins\RhinoCycles.rhp “RhinoCycles” 8.35.26251.13001
C:\Program Files\Rhino 8\Plug-ins\Grasshopper\GrasshopperPlugin.rhp “Grasshopper” 8.35.26251.13001
C:\Program Files\Rhino 8\Plug-ins\Toolbars\Toolbars.rhp “Toolbars” 8.35.26251.13001
C:\Program Files\Rhino 8\Plug-ins\3dxrhino.rhp “3Dconnexion 3D Mouse”
C:\Program Files\Rhino 8\Plug-ins\Displacement.rhp “Displacement”
C:\Program Files\Rhino 8\Plug-ins\SectionTools.rhp “SectionTools”