#material-mesh

go to the material tab in Pmx Editor

select from the materials list the one you want to make copy of

right click on it and select this option :

3 options will appear :

first option: will make copy of faces if the original had facials/morphs - they will work on the copy editing the copy mesh - will also edit the original

second option: will make copy of faces and vertices if the original had facials/morphs - they will not work on the copy editing the copy mesh - will not edit the original

third option: will make copy of faces, vertices and facials/morphs if the original had facials/morphs - it will make copies of the morphs (copied morphs will have + at the end of their name) editing the copy mesh - will not edit the original

(for the example at the top I chose second/third and moved the copy)

after choosing an option there will be a massage, click ok

the copy of the material will be on the end of the list and have + at the end of the name

select the vertices you want to join

now click :

change all the 1.00 to 0 in the marked column :

click on this button, the zeros underneath will change :

finally click this button, and the vertices will be joined

first, make sure those buttons are one

select a square (2 triangles) (to see wires click at the bottom: mode -> wire+ )

don’t select more than 2 triangles or non square shape, you will get an error :

after selecting the square click in PmxView : (or press ctrl+L)

and the diagonal will change direction