As well as cleat that will help you cross to position the parallel streaks (their length is not important but it will adapt to the cart later).
Bring you also screws, 8 wheels ,4 square, a board and keep the length of cleat in reserve.
Step 1: Assembly of Rail
If you make several lengths of rail, you can reach them with wine cork stoppers so they remain properly aligned
Donner son avis sur la traduction.
Step 2: Truck Manufacturing
Once the wheels screwed to the battens, you can screw the cleats on the board making sure the wheels are encompassed tube (repeat both extremitées of the board).