Introduction: Fast Hot Glue Mold for Small Things


Here I will show to you how to make a fast, simple and cheap hot glue mold to reproduce small things.


Step 1: Materials


You will need:

1. Some oil

2. Hot glue gun


Step 2: Preparing the Thing


The small thing that you want to make a mold must support a temperature about 100 degree Celsius, that is the hot glue temperature.

I choose a half-dollar coin, but you could choose anything else.

First put the object above a smooth surface. Then spray a little oil on it and spread it evenly with a piece of cotton. Spread a bit around too.


Step 3: Making the Mold


Wait for the hot glue heats well and slowly apply it above and around the object. Use your hand to push the glue rod inside the gun, to help the flux exit evenly. Try to avoid make bubbles (sometimes is difficult).


Step 4: Separating the Object


Wait until the glue cools well and carefully peel the mold out of the object.

Now you have a fine plastic mold with all the details of the object.


Step 5: Reproducing the Object


Spread a little oil inside the mold.

Now fill the mold with the material of your choice. I choose epoxy, but you could use another material, like clay or acrylic resin.



Step 6: Finalizing


Wait for the material to harden and carefully retires it.

Make the finishing, cut the scraps and paint it, if you want.

Have fun!


Comments

author
GerardD32 (author)2017-07-06

thank you

author
ArticAkita (author)2015-11-23

how neat! need to try this on a few foreign pennies I have one has a chuckar bird Canadian the other has a starfish on it from the Bahama republic. (I love it when I find odd coins mingled in my change from town!)

author
SamanthaH2 (author)2014-11-15

can you use food? y'know like oreo cookies...

author
Datawolf (author)SamanthaH22015-08-06

Oreo will not support 100°C.

To mold Oreos you can use Oogoo. (and it's even cheaper)

author
Georgemk (author)2013-09-27

Will it works If I use silicone?

author
Najmyman100 (author)2013-02-06

would it work to create a clear dome

author
ilovegm (author)2012-07-14

that epoxy could have made a more durable mold.
hot glue is cheaper though

author
imBobertRobert (author)2011-06-05

would i be able to reverse it? like use clay and use that as the cast, then put hot glue into that cast?

author
dbrt60 (author)imBobertRobert2011-06-06

I think that it's possible. The clay must be a little more dry, maybe. Try it! Don't forget to tell me the result. :)

author
imBobertRobert (author)dbrt602011-06-08

it worked OK. the mold was hard to get out so i left a little bit hanging out and then cut it off. the clay crumbled after about 5 uses, but it was worth it!

author
iminthebathroom (author)2011-05-23

nice idea, I will remember this for the future!

author
kenobr100 (author)2011-02-01

can you do both sides or is it too hard to do?

author
Lindsley (author)kenobr1002011-02-01

Yes, you can make both sides, but you have to make align marks and good oil lubrication between them.

author
LadyBoi (author)2011-01-13

I wonder if you could use this method for doing stamps? Just gluing the hot glue mold onto a piece of wood or cork... hmm, something to try...

author
Lindsley (author)LadyBoi2011-01-17

I think it would work. Maybe with silicone, perhaps...

author
blah42 (author)2010-10-08

would a army man work

author
Lindsley (author)blah422010-10-09

What is army man?

author
blackdragon27 (author)Lindsley2010-11-14

the little green action figure/ army guys

author
Lindsley (author)blackdragon272010-11-26

Maybe you have to make a two halves mold. It depends of the details of the object.

author
blackdragon27 (author)2010-11-14

what can u use besides oil?

author
Lindsley (author)blackdragon272010-11-26

Any greasy liquid or maybe soap.

author
cefn (author)2010-10-11

So obvious in retrospect but I'd have never thought of it.

Another technique to add to the arsenal, thankyou.

author
Lindsley (author)cefn2010-10-12

You're welcome.

author
Lindsley (author)2010-10-03


If you don't know, hot glue is an adhesive, and my instructable was published. It's not necessary to use Gorilla glue. Read the rules again.

author
ziotech (author)2010-09-26

Super idea! Easy to follow instructions! Thanks!

author
Lindsley (author)ziotech2010-09-26

You're welcome.

author
Asmodeous (author)2010-09-22

hmm, is this borderline counter-fitting?

author
Lindsley (author)Asmodeous2010-09-23

LOL. It don't cheats anyone.

author
Robot Lover (author)2010-09-21

This is great! Just a tip, don't use bondo to fill the mold because the bondo mixed the excelerator will get so hot that it might melt the hot glue. 4.5*

author
Lindsley (author)Robot Lover2010-09-21

Thank you for the tip, but what is bondo?

author
Robot Lover (author)Lindsley2010-09-21

It is a putty used for cars but can be used to fill molds. If you want a better explanation here is the wikipedia page. http://en.wikipedia.org/wiki/Bondo_(putty) 

author
dchall8 (author)2010-09-15

I see some necklace pendants in my future. Thank you!!

author
Lindsley (author)dchall82010-09-16


You're welcome.

author
theblinddonkey (author)2010-09-15

awesome.

author
Lindsley (author)theblinddonkey2010-09-16


Thank you.

author
FrankenPC (author)2010-09-15

I think you just committed a felony ;-D

Seriously, that is cool. And easy to do.

I bet you could lay down a layer of glue on a warming plate, put down the object and lay another layer on top to create a complete mold. Just use a bit of oil on the bottom layer of glue so you can separate the two halves.

author
Lindsley (author)FrankenPC2010-09-15


OK. Now I see that the method that I describe could heat the half glue too. I will try to see if it works.

author
Lindsley (author)FrankenPC2010-09-15


LOL. Thanks
I think that the temperature could make some damage in the layer.
If you want to make a complete mold, you could also use a clay base in the middle of the object, make half of it and then turn on, remove the clay, mark some points, use the oil and make the other half.

author
scoochmaroo (author)2010-09-15

Wow, this is great! I never thought of doing this before. How many times can you use the mold before it deteriorates and loses detail?

author
Lindsley (author)scoochmaroo2010-09-15

I don't know, but if you use always the oil and don't heat the mold I think that it will be used several times. Anyway, it's so cheap, simple and fast, that you could make another mold always that you need.

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