1 answer ·
asked June 15, 2019 10:58pm
· Lesson: Mesh Modeling Exercise 01 · Course: Mesh Modeling Fundamentals
It's hard to give an exact reason why without knowing what steps you've taken, but most often these types of errors come from canceled actions. Many tools in Blender are actually macros, whereby multiple actions happen with a single key press.
For example, Extrude first creates the extrusion and then activates the Translate tool, such that if you hit RMB/ESC to cancel it only cancels the moment.
An easy fix for this is to select everything in Edit Mode and then use the Remove Doubles tool to merge close-proximity vertices.