Friday, September 3, 2010

Easy Invisible Ink

Today we’ll McGeiver some invisible ink using nothing but staples, white vinegar and a damp teabag.  Most people already know about the lemon juice/heater method but with this one you won’t need to burn your paper to reveal the message.

Get about a quarter of a glass of white vinegar and drop in a load of staples.  Paperclips, nails or any other non galvanised iron or steel object will work too but staples being small will have more surface area to react with the vinegar.  The acetic acid in the vinegar will react with the iron to make iron acetate, the key ingredient for the ink.

Leave this to sit for at least a day.  When complete, pour off your vinegar/iron acetate solution into a clean jar and throw away the manky staples.  Using a pen of sorts you can now write with this ink.

Revealing the message is as simple as rubbing over it with a warm damp teabag.  The iron acetate will slowly turn dark and your message (or crudely drawn genitalia) will show like magic.


  1. I gota try that sometime. Sounds like a whole lot of effort though.

  2. "Most people already know about the lemon juice/heater" I totally thought it was that method you were gonna show. But I learned something new ^^

  3. aint nuttin but a g thang

    Check it

  4. learn something new every day thanks bro

  5. Showing teh daily DERP

    plox edit your comment capcha out

  6. pretty cool stuff, showin my support!

    Follow me back!

  7. i'll try this assap
    thanks for this tip :)

  8. following and supporting thanks for the info

  9. Very Inventive.
    If you like inventive, arty stuff like this, you should check out my blog.

    It's all about visual arts, with some off topic stuff.