Introduction: Fast Hot Glue Mold for Small Things

Picture of 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

Picture of Materials

You will need:

1. Some oil

2. Hot glue gun

Step 2: Preparing the Thing

Picture of 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

Picture of 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

Picture of 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

Picture of 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

Picture of 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!


GerardD32 (author)2017-07-06

thank you

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!)

SamanthaH2 (author)2014-11-15

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

Datawolf (author)SamanthaH22015-08-06

Oreo will not support 100°C.

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

Georgemk (author)2013-09-27

Will it works If I use silicone?

Najmyman100 (author)2013-02-06

would it work to create a clear dome

ilovegm (author)2012-07-14

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

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?

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. :)

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!

iminthebathroom (author)2011-05-23

nice idea, I will remember this for the future!

kenobr100 (author)2011-02-01

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

Lindsley (author)kenobr1002011-02-01

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

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...

Lindsley (author)LadyBoi2011-01-17

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

blah42 (author)2010-10-08

would a army man work

Lindsley (author)blah422010-10-09

What is army man?

blackdragon27 (author)Lindsley2010-11-14

the little green action figure/ army guys

Lindsley (author)blackdragon272010-11-26

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

blackdragon27 (author)2010-11-14

what can u use besides oil?

Lindsley (author)blackdragon272010-11-26

Any greasy liquid or maybe soap.

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.

Lindsley (author)cefn2010-10-12

You're welcome.

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.

ziotech (author)2010-09-26

Super idea! Easy to follow instructions! Thanks!

Lindsley (author)ziotech2010-09-26

You're welcome.

Asmodeous (author)2010-09-22

hmm, is this borderline counter-fitting?

Lindsley (author)Asmodeous2010-09-23

LOL. It don't cheats anyone.

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*

Lindsley (author)Robot Lover2010-09-21

Thank you for the tip, but what is bondo?

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. 

dchall8 (author)2010-09-15

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

Lindsley (author)dchall82010-09-16

You're welcome.

theblinddonkey (author)2010-09-15


Lindsley (author)theblinddonkey2010-09-16

Thank you.

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.

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.

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.

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?

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.

About This Instructable




More by Lindsley:Floppy Password GuardGlass Geodesic DomeFast hot glue mold for small things
Add instructable to: