Can i choose the thickness of color or material?

how did you get asembly ? i don’t see that option

never mind, discovered that you have to

now the result is much more better, i wish it was more intuitive than this.

now i hate to be picky but you can see there is still few issue, like it still sometime do a blob of TPU with no interlocking

and why do it on the left and not on the right ?