Introduction: Molecular Formula Key Ring.
A Christmas present For The Chemistry Boffin Who Has Everything.
I want to give a present to my young friend who is studying Chemistry at an Oxford University.
This is what I have to go on:
He spends 90% of his time studying equations.
He has an active Social life which involves lots of drinking.
He always loses his keys.
So, after much thought, I decided to make a key-ring with the molecular formula for alcohol (ethanol ) on it.
Step 1: Tools and Materials.
You will need;
A pair of tin snips or hacksaw.
A drill or a punch.
A file or a grinder.
A Letter punch set or an engraver or a scribe.
A small piece of aluminium or steel.
A lanyard or key fob.
Step 2: Cut the Basic Shape.
Cut the basic shape.
I had a small piece of steel that was marginally thicker than a credit card; it was formerly part of a shelf bracket that was too flimsy to ever work properly,
Step 3: Mark Out the Formula.
Mark out the formula.
I did this to avoid mistakes.
It also takes the ink into the recess of the letter, making it darker.
Step 4: Punch in the Letters.
Punch in the letters.
You will need to to this on a heavy metal ojbect; I used the back of the vice.
After adding the letters you will probably want to flatten the metal out.
Step 5: Grind or File Off the Corners.
Grind or file off the corners.
Remember, if you are using aluminium that you will not be able to use a grinder and should use a file instead.
Step 6: Drill a Hole.
Drill a hole for the lanyard.
It is best to have the metal clamped down to prevent injury.
File the burr from around the hole.
Step 7: Buff Up.
Buff up using emery paper.
I used mild steel and I like things to get a nice patina, especially when they are handled often so I just gave it a small squirt of furniture polish that contains wax; if you want to keep it shiny then a quick spray with a can of clear lacquer might be a good idea; but I don't think that it is really necessary.
Step 8: Add the Lanyard or Key Fob.
Add the lanyard or Key fob.
These are available in craft stores, but I just happened to have one at hand.
I added his name to the back as well.