This is my second chain oiler, the 2.0 version. Chain oilers are used to lubricate mechanical pieces automatically, so I made one for my own bike. It has several advantages.
• Longer life of the chain.
• Constant lubrication, ideal for rain days.
• And the possibility of use a lighter oil, like SAE 5 or 10, ideal for dusty roads.

Step 1: Materials

You will need:
• Aluminum tube, of 22mm (7/8”) dia. 15cm (6”) long.
• A “Polper B12” vitamin flask.
• One silicon tube, like those used by doctors for serum.
• A cork.
• A needle 48/18, it’s the biggest I found, has 1mm dia.
• Seals
• A piece of rubber or Styrofoam.

Step 2: Cutting the Caps

Cut the polper flask in half, precision isn’t needed.

Step 3: Finishing the Oil Tank

Remove the threaded of the polper’s cap
and then add teflon tape in the ends of the aluminum tube

Step 4: Cork Seal

Cut a piece of cork as shown in the image.

Step 5: Prepairing the Tank

Make a 5mm hole in the cork and the polper’s cap and introduce the cork into the aluminum tube.

Step 6: Prepairing the Serum Tube

Carefully insert the needle in the extreme of the silicon tube, and introduce the other extreme in the aluminum tube with the polper’s cap.

Step 7: Test It

well, the pictures coming soon,
but you have to put the needle over the chain, and let it drip on the chain.
another day I'm gonna upload the photos explaining how to put on a bike with 18 speeds