Boolean Operations and Grid Division Problems

[COOLEST-GET]

I used Boolean operations to construct the model, but why are there still individual lines at the connections of the constructed model, which has caused difficulties in my grid partitioning? Thank you very much if you can solve this problem.

Boolean：
mapdl.vsbv(2, 6)
mapdl.vsbv(1, 4)
mapdl.vsbv(2, 5)
mapdl.vsbv(16, 7)
mapdl.vadd(1, 2, 3)
mapdl.vadd(8, 9, 12)
mapdl.vsbv(4, 1)
mapdl.vadd(10, 11, 13)
mapdl.vsbv(2, 1)
mapdl.vsbv(3, 14)
mapdl.vsbv(1, 15)

Mesh：
mapdl.et(1, "SOLID186")   
mapdl.mp("DENS", "1", "7830")
mapdl.mp("EX", "1", "2.09E05")   
mapdl.mp("PRXY", "1", "0.3")  

mapdl.type("1")  
mapdl.mat("1")     
mapdl.smrtsize(5)     
# mapdl.desize("ALL", edgmn=1, edgmx=5)
mapdl.mshape(1)     
mapdl.vmesh("ALL")  

[mikerife]

Hi @COOLEST-GET
The image did not make it to the posting; can you try that again?