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How to glue metal: which are the most suitable glues when you wantglue the metal on metal or other materials.
Glue for metal
For glue the metal one is usefulglueepoxy in modeling paste, in syringe or a two-component epoxy glue (two-component in tubes to be mixed).
When we talk about epoxy glues we refer to a large family of chemical compounds. Generally, the best ones consist of two separate components (two-component glue for metals) to be mixed immediately before use. It is a resin and a catalyst that when they come into contact create a glue layer that hardens within a few seconds.
Two-component glues for metal are perfect if you intend to glue the handle that has detached from the pot.
Metal repair products
There is also no shortage of products on the market that can repair or reconstruct missing metal parts. We generally speak of "putty for metal". There are also metal repair sticks but in this case the catalyst is given by a central core wrapped in a resin cylinder.
The putty for metal is nothing more than a glue, so the putty is also an epoxy product.
How to glue metal
Having made the necessary premises, it is clear that to repair or glue two pieces of metal you just need an epoxy glue.
Which metals do putties (repair metal) and epoxy glues work on?
In practice on all metals; with these products it is possible to repair or glue iron, aluminum, copper, brass, bronze, cast iron, lead ...
But when does metal have to be bonded to another material?
Here the situation changes because epoxy glues do not have the same "grip" on all materials. In particular, they are useful for:
- bonding metal and ceramic
- glue metal and wood(best to use epoxy putty)
- bonding metal and building materials (better to use epoxy putty)
To bond metal and plastic, epoxy glues are not very suitable but you have to consider the type of plastic and the size of the objects to be glued. Same thing if you intend to glue metal and glass. If you are looking for a glue to weld glass and metal together, we refer you to the guide: how to glue glass.
How to glue metal and wood
As stated, in this context it is better to use an epoxy product which, in hardware stores or DIY stores, is sold as "metal repair" or "putty for metal". This product is even more suitable if you have to perform a filling function: for example, the metal hinge of a wooden door has come off, or you need to glue metal on a wooden surface that is not perfectly linear.
Among the various products on the market, we recommend the use of the "Bostik Metal Repair", even if it is not the only one. In any case it is a very practical stick to use.
The stick is coated with a protective film to be cut off at the time of use: cut only the amount you will use.
Mix the product with your hands (wear latex gloves) until you get a homogeneous paste to use to repair the metal and glue it to the wood. The pasta, when heated, changes color and softens.
Why did we recommend this product to you? Simply because it is very modelable and has excellent filling power. If you have used an excess of product, you can use sandpaper to sand away the excess that comes out from the edges of the wood / metal. It is also effective on stone, terracotta, ceramics and similar materials.
Where to buy the Bostik metal repair? From the hardware store or taking advantage of online sales. On this Amazon page, for example, you can buy it at a price of 11.83 euros with free shipping costs.
How to use two-component glue for metal
If, on the other hand, you have bought a two-component glue or you need to glue two metal parts with the doses prescribed by the manufacturer: usually two components must be used in equal parts.
Use a saucer where you can pour the two components and mix them. After joining, they must be used within a few minutes. Is it quick-setting glue? It all depends on the size of the metal (iron, cast iron, brass, steel…) to be glued. Typically the two pieces should be held in place for about 10 minutes.
It is clear that before applying the glue (which must be placed only on one of the two surfaces to be joined) it is necessary to carefully clean the surfaces that will come into contact.