Lecture 29 - Knife doesn't cut edge, until "Cut through" (C) is turned on

[RayMobula]

Hi there,
Not sure why, but blender doesn’t allow me to cut the upper or lower edge of the tiles, where it faces the extruded edge - until I turned on cut through (C).

At any other edge the tiles can be cut with cut through off.

Any suggestions?

Thx.

• Ray

[FedPete]

Did you check for extrusion duplication?

• In edit mode select all, and merge by distance, fiddle with the distance.
• Also, by default Blender will select front faces, so try to rotate the object so you can access the places required.

[RayMobula]

Thx.
Quick answers:

• No duplicates, I checked
• Tried to rotate, makes no difference. I just realized I applied the mesh randomize step before the inset, depth step.

[NP5]

As cut through let it work I suspect the parts you wanted to cut were just slightly hidden behind other geometry.
That randomisation might have moved verts to cause that.

[RayMobula]

Think so too.

[HobbyPirates]

I don’t know if I quite understand what you’re trying to. You may be able to select the one edge you’re trying to add a vertex too and right click to subdivide. Then just ‘GG’ to edge slide it to the spot you want. After that you could knife tool a bit easier to the spots you want.

[RayMobula]

It’s part of the beginner course to introduce damage and cracks to the edges. The knife tool didn’t allow me to select the edge I needed to create another edge to do so. I had to turn on cut through to make it work.

Most likely, the randomization step caused this.

Usually the knife tool work sfine.