Sugru - How to Make Your Own DIY Sugru Sachet / Save Left Over Sugru




About: The team behind Sugru, the mouldable glue that makes fixing and making easy and fun. Do-ers of the world it's time to get excited.

When I open a 5g sachet of sugru I tend to use it all but sometimes there is a little piece left and often this is where I get really creative, thinking of what to do with the leftover piece.... :)

...some people like to save their left over sugru for later but as sugru is a moisture cure material, it is very difficult to stop it from curing :(

This is a simple and easy to do project to help you save your left over sugru for later :)

N.B. your DIY sachet should save your sugru for a while but will not as good as the original sachet

The sachets that your sugru is packaged in is not ideal to use for DIY sachets as there is a residue of sugru there that does not allow for a good seal :( The pouch material is clean which makes it ideal for the job.

Step 1: Use Your Sugru Pouch

To make your DIY sugru sachets, you can reuse your sugru pouch for it's moisture barrier foil.

You can make 4 good sized sachets from the Smart Hacks Super Pack and 4 smaller sachets from the Smart Hacks Pack :)

Step 2: Cut 1

First of all, cut the top and bottom from the pouch, these parts can not be used for your DIY sachets.

The is a gusset at the bottom of the pouch, make sure you cut above this.

Step 3: Cut Into 4 DIY Sachets

Now cut the middle section of your pouch into 4 squares - each square will be big enough to hold at a full 5g lump of sugru. It should also be big enough to save a new mixed colour over 5g :)

Step 4: Create a Seal

In order to prevent your sugru from curing in your DIY sachet, you will need to create a moisture barrier seal.

Use your domestic clothes iron and the edge of a steel sink.

Turn the iron on to max heat.

Place one side of your sachet flat onto the side of your sink.

Press the iron down firmly onto the sachet for at least 1 second. Do not move or slide the iron, simply apply firm downward pressure.

Make sure that you have applied the pressure along the full length of your sachet. It is unlikely that all the surfaces are flat so perhaps applying the pressure at 2 or 3 points along the sachet will achieve the best result.

You should create a seal that is at least 3mm wide but 5mm is an ideal width.

Step 5: Complete DIY Sachet - Ready for Your Spare Sugru

Your sachet should have seals on just 2 sides forming a right angle.

From our experience this is the best way to make, fill and seal your own sachet.

Prepare all 4 of your sachets now and have them ready for your spare sugru.

Step 6: Pop Left Over Sugru Into DIY Sachet

When you want to save your left over sugru, pop it into the sealed corner of your DIY sachet.

Step 7: Prepare DIY Sachet for Final Seals

In order to achieve the best possible moisture barrier, you need to make your seals as flat as possible and avoid creases in the foil.

Gently press your sugru in the sachet so that it is relatively flat - be careful to keep the sugru in the sachet away from your seals as this will compromise your seal quality.

Next press down the foil along the first edge and squeeze it outwards to make both sides of the sachet flat and smooth.

This is ready to seal with your iron.

Step 8: Create Final Seals

Iron the third side of your DIY sachet as before.

Once this side is sealed, prepare the final side of your sachet as before making sure that the foil is flat and crease free.

Step 9: Booster Seal

Finally, I would recommend additional corner seals on your sachets, this is usually the weakest point of your sachet.

Step 10: All Finished With 3 Sachets to Spare :)

Here is my completed sachet and three spares :)

Today (Thursday January 20th) is day 3 of my experiment to see if my sugru stays uncured in my DIY sugru sachet - and I am delighted to report that it's still perfect :)

I will keep you posted on any change...


2 People Made This Project!


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60 Discussions


2 months ago on Step 10

I store my surgru leftovers using cling film to "cocoon" the piece(s) right so there's barely any air inside.
It's not as neat as how you do it, but does the job. :-)


8 years ago on Introduction

Massive kudos to you guys for publishing this. Most companies selling perishable products wouldn't want their consumers to know this kind of trick for fear of them not buying as much of it. If anything, knowing I can do this would make me open a packet sooner rather than waiting around for several fixes to do.

3 replies
The IdeanatorJayefuu

Reply 8 years ago on Introduction

Agreed. I've been looking for something to do heat seals like that for a while, but haven't thought of anything quite so simple (though a rig with the heating element out of a toner printer would be cool).

Jamn4godThe Ideanator

Reply 1 year ago

I'm thinking my hair straightener would work. It has heat blades on both sides and heats up to 425 degrees. I'm going to try that for my next Sugru project.


Reply 1 year ago

Most plastic rappers are slightly porous and therefore not airtight.


1 year ago

Awesome!!! Thanks so much for the instructions. I haven't even used my Sugru because I don't want to waste the left over amount, LOL.


6 years ago on Introduction

Hello, just reporting back regarding the hot knife sealing technique, i am still a computer luddite and cant send a photo of my botch job.
Anyway my son was playing football in his room and broke his light so i got out the last pack of sugru the one i had sealed with the knife, it still felt squidgy so i opened it and it was as good as gold as soft as before, i bought the pack at christmas and the used by date was october i had been keeping it in the fridge also. so all is well, cheers sugru.

1 reply

6 years ago on Introduction

hello, i just opened a pack and did not need it all, so i used your steps, but i don't have an iron, so i heated up a knife and it seems to have worked, i used a tea towel so i wouldnt burn me self when pressing on packet, still soft a night later, shall report back soon, cheers for the heads up

2 replies

i am having trouble replying, as i am not very computer literate, i cant even upload a picture, i have had another look though and i left to much air in as i didnt really take very much care with it, just thought i would try, but its still soft, sorry if you are receiving multiple replys from me.after tectsro

Hi, I tested this for about 2 weeks and it was still good, it really depends on the quality of the seal you create but I would recommend about 2 weeks.

You know if you open one side of the 5g sachet you can reseal it with those food bag sealers really easily, it'll be a better seal than folding alone plus no need for chopping up, I can attest to it working for a few days.

1 reply