Sugru Mouldable Glue Review and Guide

SUGRU is a super useful and versatile product. It’s a moldable, shapeable glue that cures overnight, forming a strong silicone rubber.

It’s useful for making makeshift repairs, unique inventions, and improvements and for artistic projects. If you have a bit of creativity, Sugru will be the best thing you buy all year!

Quick Overview

Sugru is more than just glue, it’s a building material. Sugru comes in small packs, which are like soft putty in your hands, very easy to shape and mold into whatever shape/position you want.

Overnight, Sugru cures and becomes a strong, flexible, durable silicone rubber, resistant to heat, moisture, and vibrations. 

It sticks to almost any surface and is perfect for repairs or making unique custom additions to your home.

There are so many ideas for Sugru, it’s been used to make custom grips for tools and utensils, add color to keys or switches, create hooks for clothes or other items, repair shoes, repair fraying cables or wires,  make a custom protective phone case, decorate cards, mugs, bottles, clothes, and furniture, create door stoppers to stop your doors slamming or rattling, create custom handles for drawers and cupboards.

The possibilities with Sugru are truly endless, limited only by your imagination.

Check out some of these creative ideas for Sugru!

It’s hard to describe in words how awesome Sugru is… check out this demonstration video:

Pros and Cons:

Pros

  • Innovative product
  • Very easy to use
  • Available in many colors
  • Waterproof
  • So useful for fixing and improving things
  • Flexible and Strong
  • Can be used indoors or outdoors
  • Bonds to almost any surface
  • Great for home repairs
  • Good for Arts & Crafts
  • Good value, especially the multipacks
  • You won’t know how you ever lived without it!

Cons

  • Takes 24 hours to fully cure
  • Does not bond certain plastics
  • Can’t save unused Sugru once opened

Click here to check out Sugru on Amazon!

Product Features

Sugru is unique in the Glue space. There aren’t too many products out there that can do what Sugru can do.

It has the strength and utility of a silicone-based adhesive but is so much easier to use. It can form any shape you want, and stick to almost any surface. The possibilities with Sugru are really endless.

Easy to use

One of the biggest selling points of Sugru is just how easy it is to use.

Simply open the pack, mold the Sugru into whatever shape or position you want, and leave it overnight to solidify. It’s clean and quick and doesn’t make any mess or create any smells. 

Extreme Temperature Resistance

Sugru can be used almost anywhere!

As well as being waterproof, flexible and strong, it can withstand extreme temperatures, both at the high and low end of the temperature scale.

Sugru can withstand temperatures of -58 °F to an insane +356 °F (-50°C to +180°C) without changing consistency or melting.

Durable

Sugru may seem like a gimmick or a toy, but at its core, it is a strong, flexible and durable silicone adhesive.

If you use Sugru for a repair, it will be a permanent repair.

Completely Waterproof and Weatherproof

Sugru is completely waterproof, so it’s great for repairs in the bathroom, kitchen, or outdoors – where the humidity would destroy some other glues.

Sugru is also able to withstand extreme temperatures (hot and cold) and it does not degrade in UV light. It’s flexible and is not affected by seawater – making it excellent for marine use.

Unmatched Versatility

Once you start using Sugru around the house, you will wonder how you ever lived without it.

Sugru can be used on almost anything, it can make repairs, it can improve existing products, it’s great for DIY and Arts & Crafts alike, useful outdoors and indoors.

It’s waterproof, flexible, durable, and strong, and it sticks to almost anything.

Sugru Ideas:

  • Mount pictures and other fixtures without drilling or gluing
  • Create a freestanding holder or wall mounted holder for your phone or tablet
  • Reattach, replace or repair broken parts of furniture or toys
  • Use it like a silicone sealant to patch up any cracks or holes
  • Add rubber feet to your furniture or electronics to protect your floor and to stop any slipping
  • Create hooks to hang clothes, utensils, eletronics etc
  • Fix or preemptively reinforce broken or fraying electrical cables, headphone cables and charger cables.
  • Replace broken door handles or brighten up existing ones
  • Repair shoes and clothes that are coming apart
  • Create custom ergonomic grips for your equipment and tools that fit your grip perfectly
  • Use it to decorate objects and for other arts and crafts

Available in any color

Sugru is available in Black, White, or in a color pack with several options.

If you can’t get the exact color you need to match whatever you’re repairing, you can mix some of the colors together to create the color you need.

Sugru sells various colors and color variations, in lots of configurations.

Check out the various colors available on Amazon

Click here to view amazing Sugru on Amazon!

How to use Sugru (instructions)

Sugru is extremely easy to use, a child could figure it out!

1: Prepare the surface you are going to bond

Make sure the surface is clean and dry. Any dust or oil will prevent the Sugru from sticking to the surface.

2: Open the Sugru packet

Use scissors to open the Sugru. Only open as much as you need, because once it’s open you only have 30 minutes to work with it before it starts to harden.

3: Shape the Sugru and put it in the desired position

Once Sugru is open, you have about 30 minutes to shape it and stick it to a surface before it starts to solidify.

This step will depend on what you are using it for.

Shape it with your fingers (or with a tool) into the shape you need, and press it to your surface.

3: Apply a texture if desired

For a smooth finish: Wet your finger with soapy water and smooth out the surface. Fingerprints show up very easily on Sugru and can make things look a bit “homemade”. Sometimes that’s what you want, sometimes it isn’t!

You can also use various household tools to add a texture to the Sugru before it dries. If you are having trouble adding the texture without sticking to the Sugru, use some soapy water.

4: Leave Sugru to cure for 24 hours

Sugru will start to solidify in about 30 minutes, however, you have to leave it for 24 hours for it to fully cure, and to form a strong bond.

Don’t put any pressure on the Sugru until then, to ensure it has a chance to bond properly.

5: Be careful how you store your unused Sugru

According to the manufacturer, Sugru has a shelf life of 6 months at room temperature, or one year if refrigerated.

However, several of the customer reviews on Amazon have mentioned that the glue has hardened inside the packet, even when it was sealed.

Check out the reviews for yourself, and don’t buy too much Sugru at once, only as much as you need!

Click here to read customer reviews on Amazon

What Materials does Sugru work on?

Sugru forms a natural bond with metal, wood, most plastics, ceramics, glass, other silicones, rubber, and most other household materials you could think of.

Apart from a few types of oily plastics (Polyethylene / Polypropylene), there isn’t much Sugru can’t stick to.

Sugru will stick to:

  • Ceramic
  • Wood
  • Glass
  • Steel
  • Metal
  • Styrofoam
  • Leather
  • Paper
  • Polystyrene
  • Stone
  • Rubber
  • Fabric / Cloth
  • PVC Plastics
  • Paper
  • Tile
  • Aluminium

Sugru can’t stick to:

  • HDPE/LDPE Polyethylene
  • Polypropylene Plastic

FAQs

Is Sugru Waterproof?

Once cured, Sugru is fully waterproof. It forms a waterproof seal that can withstand extreme heat, extreme cold, UV rays and is also unaffected by seawater, making it perfect for even the most extreme water repairs.

Is SugruPaintable?

It is paintable, however since it doesn’t dry completely hard but instead remains flexible, the paint will easily chip and break off the surface as it moves so it’s not recommended to paint it.

Instead, get some Colored Sugru, and mix the colors until you have the perfect color for your repair.

Is Sugru Heat Resistant?

Yes! Sugru can withstand not only high heat but extreme cold as well.

Sugru can cope with temperatures between -58 °F all the way up to +356 °F (-50°C to +180°C) without melting, freezing, or weakening the bond.

How to remove Sugru

Sugru can be removed with a sharp tool like a crafting knife, and any remainder can be scraped off with your fingernail or a plastic tool that won’t damage your surface.

If there is any residue that won’t come off readily, you can use a little isopropyl alcohol to weaken the Sugru and wipe it off with a cloth.

Is Sugru dishwasher safe?

Sugru is completely waterproof and heat resistant up to over 350 degrees, so it will be perfectly fine in the dishwasher.

Is Sugru Food-Safe?

Sugru isn’t classed as toxic, but it’s also not considered “food safe”. It’s not edible, and it’s also not safe for pets. 

Does Sugru conduct electricity? (Is Sugru conductive?)

Sugru doesn’t conduct electricity, it’s an electrical insulator, making it perfect for sealing electrical cables and wires!

Is Sugru Flammable?

Sugru is not flammable. According to the manufacturer, Sugru does “not readily combust, when exposed to direct flame”.

Sugru Safety Data Sheet (MSDS)

Here are the safety data sheets and the technical datasheet for Sugru, provided directly from the manufacturer.

Sugru Technical Data Sheet

Sugru Safety Data Sheet

Does Sugru become Hard?

Sugru never becomes solid like hard plastic. Instead, it becomes a semi-solid silicone rubber. It feels something like the consistency of a bouncy ball, but a bit more stretchy and flexible.

What is Sugru made of?

Sugru is made of 100% Formerol.

You can read more about the chemical properties of Formerol here:

http://www.formerol.com/technical-data.html

Is Sugru Reusable?

Sugru is not reusable once it’s cured. There is no way to make it malleable again, so make sure you only open the amount you need and keep the rest sealed until you need it.

Is Sugru Sandable? (Can it be sanded?)

Sugru can be sanded, however, it will change the texture of the part that has been sanded.

If you want to keep the same texture, once you’ve finished sanding, put a thin layer of fresh Sugru over the sanded area and smooth it down with your fingers.

Where can I buy Bulk Sugru?

Sugru is available in various quantities from Amazon.

Click here to check availability.

Will Sugru dry out?

While Sugru is sealed in the pack, it should last up to a year. There is an expiration date printed on the pack, you should make sure to use the Sugru before this date, otherwise, it may solidify even while it’s inside the packet.

There have been a few reviews of Sugru mentioning the glue hardening in the pack. I recommend you check out the reviews on Amazon and make up your own mind.

Sugru Drying Time & Cure Time

In general, Sugru will be dry in about 30 minutes, however, it takes around 24 hours for the Sugru to fully cure, depending on the temperature and humidity of your working environment.

Some general rules:

  • 3mm of Sugru cures in approximately 24 hours.
  • 5.5mm cures in approximately 48 hours
  • 8mm cures in approximately 72 hours.

Click here to read more information on Amazon