Thanks for looking.
Osnap usually works, but here I can’t get it to snap to a curve. If I draw a strait line I can get it to work. but for some reason it wont snap to the curve I created. It looks tho, until I zoom in, But it wont let me Loft it. I tried restarting the program. Also restart computer too. See video and thanks for any suggestions!
Pls post the file. A video won’t help us resolve this particular issue.
Also, run _SystemInfo in Rhino and post back the results.
With the amount of zoom you do in the video, my guess is that the gap you are seeing, is well below tolenrance and is just the display acting up due to the zoom level - and that the loft is failing for other reasons. As @Gijs pointed out: post the file 
-Jakob
Okay thanks guys. Here is the info requested.
Bike Helmet turtorial2.3dm (1.0 MB)
Rhino 8 SR27 2025-12-23 (Rhino 8, 8.27.25357.11371, Git hash:master @ 4f7e78056cadbad051d03c30f40683a64dcc7a5d)
License type: Evaluation, build 2025-12-23
License details: Cloud Zoo
Expires on: 2026-03-17
Windows 10 (10.0.19045 SR0.0) or greater (Physical RAM: 32GB)
.NET 8.0.14
Computer platform: DESKTOP
Standard graphics configuration.
Primary display and OpenGL: NVIDIA GeForce RTX 2060 (NVidia) Memory: 6GB, Driver date: 5-14-2025 (M-D-Y). OpenGL Ver: 4.6.0 NVIDIA 576.52
Accelerated graphics device with 4 adapter port(s)
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: 4x
Mip Map Filtering: Linear
Anisotropic Filtering Mode: High
Vendor Name: NVIDIA Corporation
Render version: 4.6
Shading Language: 4.60 NVIDIA
Driver Date: 5-14-2025
Driver Version: 32.0.15.7652
Maximum Texture size: 32768 x 32768
Z-Buffer depth: 24 bits
Maximum Viewport size: 32768 x 32768
Total Video Memory: 6 GB
Rhino plugins that do not ship with Rhino
Rhino plugins that ship with Rhino
C:\Program Files\Rhino 8\Plug-ins\Commands.rhp “Commands” 8.27.25357.11371
C:\Program Files\Rhino 8\Plug-ins\rdk.rhp “Renderer Development Kit”
C:\Program Files\Rhino 8\Plug-ins\RhinoRenderCycles.rhp “Rhino Render” 8.27.25357.11371
C:\Program Files\Rhino 8\Plug-ins\rdk_etoui.rhp “RDK_EtoUI” 8.27.25357.11371
C:\Program Files\Rhino 8\Plug-ins\NamedSnapshots.rhp “Snapshots”
C:\Program Files\Rhino 8\Plug-ins\MeshCommands.rhp “MeshCommands” 8.27.25357.11371
C:\Program Files\Rhino 8\Plug-ins\RhinoCycles.rhp “RhinoCycles” 8.27.25357.11371
C:\Program Files\Rhino 8\Plug-ins\Toolbars\Toolbars.rhp “Toolbars” 8.27.25357.11371
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”
I’m not quite sure of what you trying to do here. Which lines you are trying to loft? Which curves/control points are you trying to move? In the video, it looks as if you are dragging rather than using the Move command. If so, do you have snappy dragging enabled in the gumball settings? Also, are you tryin to move an entire curve or just a single control point?
If indeed you are dragging the entire curve, make sure that you have the End osnap enabled and that you are actually gripping the curve by the endpoint. Position your cursor on the end of the curve and hold the left mouse button until the END tooltip pops up to indicate that you now have grabbed the curve by its end point.
Again, it’s not really clear to me what you are trying to do here, sorry.
-Jakob
The zoom issue: yes you are zooming in far and that leads to these display artifacts. When you snap a point to a curve with near, you can be certain it is actually on the curve.
As for lofting, you can only loft curves that flow in more or less the same direction. So in your file, these curves can be lofted:
the goal was to get the two perpendicular “ish” curves to help define the surface a bit better then loft was doing. I was trying to get the end of the curve to snap without moving the whole thing. Maybe loft is the wrong command to use? I’m really new to rhino so thanks for your patients and help guys! Any tutorials you could recommend that give a solid approach or general philosophy on the process of modeling?
