Hold down [SHIFT] and select multiple objects, then press the [TAB] key to enter edit mode.
Select two vertices etc. and press the [J] key
① Select the side you want to slide ② Double tap [G]
Select multiple vertices and press the [M] key to select the mode
At First: Merge to the first selected vertex At Last: Merge to the last selected vertex At Center: Merge to the center of the selected vertices At Cursor: Merge to cursor position Collapse: Merge to the center of connected vertices By Distance: Merge according to the distance of the vertices
Click the Auto Marge Vertices mark to bring the vertices closer.
① Press the [X] key ② Press Dissolve Edges
Or
Press [CTRL + X]
You can also use Limited Dissolve to melt edges in a limited way, as shown below.
① Select a face (2) Press [CTRL + right mouse click] to push the surface to the cursor position.
① Make two objects into one object with [CTRL + J] ② Right-click → Set Origin → Origin to Geometory to change the origin of the object ③ Set Transformation Orientation to Local in edit mode. ④ Select the axis you want to mirror ⑤ Edit
Select an edge and press the Shear panel to edit.
Can be moved in the direction perpendicular to the surface with [ALT + S]
① Select the part you want to fill ② Select [CTRL + F] → Grid Fill