To get to Sebastian's place, you head out of town, towards the crucero. You turn right at the street in front of the Kingdom Hall Jehova's Witness church. Go one block, then turn left. Go 1 block and turn right. I believe at this point you have to turn right and have no choice.
Then proceed down this road for about the distance of 2 1/2 city blocks. I do not believe there are any side streets. Just keep going until you see a very nice house on the right at a corner. That is Dangerous Dan's house. Turn right and proceed about 1 block. There, on the right, you will see Sebastian's enclave. I've got stuff from him for years. I've been there more times when he is not there. You cannot miss the piles of sawdust from very fine to curled chip.
You've gone just a bit too far up this road if you see the brick walled compound on the left which is where Junior and Ariel usually store their big trucks.
Sebastian is a very mild mannered, friendly, quiet, shy guy who knows plenty of folks come for the sawdust. He's always happy to get this stuff cleared out and put to good use.
Be sure to visit www.lamanzanilla.info for more information about La Manzanilla Mexico.