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The Magic Cafe Forum Index » » Rings, strings & things » » Invisible ink that appears with heat? (1 Likes) Printer Friendly Version

YLyoo
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Regular user
South Korea
108 Posts

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I was shown by a friend an application of the frixion pen to make a signature disappear.

If I had a pen that did the opposite (invisible ink that appears with heat) I will be able to make a picture/signature change!

But I don't like the color of lemon juice.

Is there an invisible ink that turns black when heated?

Thanks, Tim.
J-Mac
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Inner circle
Ridley Park, PA
5316 Posts

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You can do what you ask with a Frixion pen or marker. Use it in conjunction with a regular pen. Think about it.

Jim
YLyoo
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Regular user
South Korea
108 Posts

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Dear J-Mac,

I have given it a lot of thought, But I cannot figure out a way.
Maybe using frixion on black paper I could make a signature appear.
But for a signature to morph to another I would need some kind of ink that appears with heat.
I was thinking about using B*rn N*tice, but does this work with paper?

Thanks, Tim.
J-Mac
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Inner circle
Ridley Park, PA
5316 Posts

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Tim,

Methinks you are missing my point. I sent you a PM.

:)

Jim
durgy
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Veteran user
Toronto
394 Posts

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Also looking for something similar.
any tips would be appreciated.

Cheers
Durgy
http://www.durgyspade.com
facebook.com/durgyspade
twitter.com/durgyspade
george1953
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Mallorca (Spain)
5943 Posts

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In the book stone, friction, fire , I think that's what its called, I am in hospital at the moment so can't check, there are many uses for these pens described, well worth a look Smile
By failing to prepare, we are preparing to fail.
Christopher Taylor
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V.I.P.
British Columbia Canada
2191 Posts

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You can write with a weak solution of cobalt chloride on off-white parchment. It is not hard to find (try eBay) and is not dangerous to work with. When heat is applied, the writing will not appear in black but a very nice blue.

Christopher
Christopher Taylor

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www.taylorimagineering.com

MAKING MENTALISM MORE IMPOSSIBLE
Glenn Watson
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Special user
748 Posts

Profile of Glenn Watson
Get well,George . I hope it is a short stay.
This is my 18 th year on being a member of the cafe.
The Magic Cafe Forum Index » » Rings, strings & things » » Invisible ink that appears with heat? (1 Likes)
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