Hot Glue Casting: Instructables Robot {L.E.D. Backlit}

This Instructables is not only about The Instructables Logo - The Robot, But it also about HOT GLUE CASTING!!!...It shows you how you can make your very own Instructables Robot model!!!.. Which could also double up as a cool night light!..

After seeing one too many instructables on How to make the instructables robot, I have been wanting to make one of my own, in my very own way!!!

Now, hot glue is used as an adhesive by most people, but I decided to use it as a casting material... and It turned out really great!!!...

For some amazing pics of it, roll over to the last step!!!... :D
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Step 1: Gather The Supplies!!!

  • Hot Glue Sticks. {Buy it from your local crafts store or see here.}.
  • Sugru {Red}. [Buy it , or win some by posting some awesome instructsbles!!!...  ;) ].
  • M-seal {epoxy} (optional -- may use sugru or any other epoxy in it's place). {Any epoxy from your local hardware shop would do the job!}.
  • Elmer's glue (or fevicol or any other similar glue from your local crafts store!).
  • UHU super glue (optional). {Buy it here}.
  • Clear Tape / Electrical tape (optional). {From your local crafts store!}.

  1. A Hot Glue Gun. {Buy it here}
  2. Cutter Knife.
  3. A pair of Scissors.
  4. Soldering Iron with Solder (optional). {Buy it here}

  • Double Layered Cardboard ( The one, usually used in packaging of heavy goods).
  • Black Chart Paper.
  • A female USB port.
  • A male to male USB cable.
  • A  5.5X2.5 mm female dc jack  (Only in case you are planning to use more than 25 L.E.D.s as I did!).
  • A power supply (Only in case you are planning to use more than 25 L.E.D.s as I did!) {I used a SMPS!!!}.
  • A Power Switch (3A, 250V -- ratings actually depend upon the supply voltage in your country).
  • Connecting Wires.
  • Pet Bottles {or any other sturdy plastic would do the job!).
  • L.E.D.s {The more, The Better!!!... I used 40 L.E.D.s -- 3.6V, 18mA}.
  • Yellow (water based) Paint.
  • Black marker pen.
  • Aluminium foil paper
  • 10 ohms resistors (at least 0.25W)--3 pieces
  • A bowl (to be used as mould for the body!).
  • A glass (to make the cavity for the L.E.D.s!!!).
  • Cellophane paper (optional).
In case you are not able to get anything, just leave a comment...
khietman1 year ago
Just to follow up, I did end up finishing this project:

I'm glad you posted this instructable, using hot glue worked out very well.
Siddharth Jain (author)  khietman1 year ago
Amazing!.... those horse ears really look nice.... :D
Dude where did you get sugru in india?????.....have searched for it alot yet can't find it
awsome dude you made a soldering iron stand form MECHANIX set,well i have the same set lying around need to see if all those bit's are still in the box or i may have lost most of them over the years.
Oh! noticed that!... :D
Well, in case you are not able to find the screws, you can always buy some from any hardware I did too!!!... :)
made myself a soldering iron stand too :) :)
I'm gifting you a THREE MONTHS PRO dude!!!  :D  (I'll PM it to you!)
Cheers and Enjoy!!!  :D

Thanks :) :) :)
Well I got it from Instructables!.... in the Instructables prize pack that I got when I won a challenge and a contest...... :D (yup!..Instructables is AWESOME!!!. ;) )
Siddharth Jain (author)  Siddharth Jain1 year ago
BTW, even M-seal painted red, should work the same!!..... :D
thank's for taking the time to reply back, will have to try it with m-seal(never have liked it it's a sticky mess)
It's a mess for sure!...
khietman1 year ago
Very cool idea. Since I didn't see it in the materials list: what kind of oil did you use? I'm planning on doing this for a project of my own. Though I'm using plywood as the thing I'm casting in and so I don't know that oil is even what I'd want to use on that, but I'm still curious.
Siddharth Jain (author)  khietman1 year ago
Well I just used the mustard oil...but I think any other vegetable or machine oil shall do the job equally well!..(I'd prefer machine oil though with plywood...).... :D

Can't wait to see your results!!!!!..... :D

cheers!.... :D
This gives me sooo many ideas... Just a quick question. How many hot glue sticks did you use? And the glue won't stick to the tape?

Great job!
Siddharth Jain (author)  Adambowker982 years ago
I just used around 8 glue sticks of 11 inches each....
2 for the head, 2 for hands and legs and the remaining for the body.....

well, it might tend to stick to tape if no proper oiling/lubrication is done....

:D Thanks!!!... :D
skj992 years ago
this sure is a winner!
Siddharth Jain (author)  skj992 years ago
:D Thanks!!!... :D
chaitanyak2 years ago
hope you win dude!
Siddharth Jain (author)  chaitanyak2 years ago
But it hasn't been accepted yet!!!
I think it's time that I should ask for help on the help forum....

Thanks a lot by the way!!.... :D
Tomdf2 years ago
Say what?! That's hot glue?! I'm amazed by how well that worked, nice job!
Siddharth Jain (author)  Tomdf2 years ago
Even I was!!...
:D Thanks!!! :D
ChrysN2 years ago
He looks very impressive!
Siddharth Jain (author)  ChrysN2 years ago
:D Thanks a lot!!! :D