anyone can help with this ?
like JohnyK say
Hi R. Did you try what JohnK suggested? Use ExtrudePolygon instead of ExtrudeShape?
Here is a test board from a different playground series. https://playground.babylonjs.com/#4G18GY#134 It uses ExtrudePolygon.
Looks ok, huh? As John mentioned, extrudePolygon has a different plotting-orientation than extrudeShape. So, when you re-assemble your door with these new boards, you will need to do some board .rotation (and likely .position) adjustments/changes.
createDoor() function will be ALMOST the same as before… but we made changes at the sawmill that cut the trees into boards. 
Brain strain from grain pain. heh. The issue is related to “caps” as JohnK states (like the top and bottom of beer cans). The verts/indices on the “cap” of the can… often have a wagon-wheel or star pattern, and when you map a wood-grain texture onto that wagon-wheel pattern, it looks terrible (needs special tweaks).
So, what johnK proposes here, it to NOT have the “cap” of the shape… aiming “up”. Put the “caps” on the butt-ends of the boards… and look at the shape from the side, instead-of from the top (the capped end). You can set your material to wireframe mode… to see/understand more about caps/orientations.
https://www.babylonjs-playground.com/#Q8C4KX#17 See the “x” or “star shape” in the wireframed boards? yuh, yuh, yuh.
Shape-builders… we got a pile of 'em here in Lake Babylon. I don’t know how to drive them very well.
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It is much heavier than I thought 
My brain is bleeding 
If you have already tried extrudepolygon then post your PG (playground) and we’ll have a look. If you haven’t tried yet then try the following changes in the PG #Q8C4KX#16
in shape array elements 0 to 7
swap the y and z values,
make sure the points order is counter clockwise (adding/removing .reverse if polygons do not appear correctly as in lines 63, 127 etc.)
remove pushing the first point ( examples lines 54, 64 etc.)
rotate each polygon by pi/2
change extrudeShape to extrudePolygon with correct parameters
Save and post the PG you get and if any issues they will be easier to help you with.
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