How can I change the gender (the direction of the studs) on a LEGO® part?
From Robert M. Dye: !
LDraw #3702
| | You can use a 1x8 Technic brick, where you could insert seven bricks on each side, with studs facing each other. This works for any size Technic brick.
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From Steve Bliss: !
LDraw #4733
| | There is a 1x1 brick with a stud on each of its four sides.
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From Larry Pieniazek: !
 
LDraw #4070, #4070, #3024
| | The 1x1 with side stud is capable of changing direction in just slightly larger than 1x2 brick space. (The stud on top of one 1x1 brick goes into the back of the other.)
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From Josh Spaulding: !
Plate with Clip Light
LDraw #4081
| | Use a 1x1 Plate with a horizontal side loop. Note that the cylindrical part between theopposing studs on the loop won’t match the smooth face of the connecting bricks.
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From Robert M. Dye: !
Technic Liftarm
LDraw #32063
| | Technic half-beams have sockets that go all the way through them, and are useful for stud entry on both sides. They are slim enough so that the studs from opposing pieces practically touch each other.
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Technic Pin 1/2
LDraw #4274
| | Another thing that I’ve done is use technic pegs to connect pieces with opposing sockets.
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LDraw #2434, #6061
| | There are also 2x4x2’s with studs on three sides, and their sisters - the 2x4x2’s with sockets on three sides.
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