Vinyl or polyurethane glue

Vinyl or polyurethane glue

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Vinyl or polyurethane glue: advantages and disadvantages of these two types of adhesives. Differences and characteristics to choose the best glue for wood bonding techniques.

Vinyl or polyurethane glue, differences

His name isWHILEand it is agluea basepolyurethanereactive. On the market there are one-component and two-component polyurethane glues. In the world of carpentry thepolyurethane gluesingle-component that is activated thanks to the moisture naturally present in the atmosphere. Therepolyurethane gluebicomponent uses a reagent with which it must be mixed to solidify and act as a binder.

For woodworking, the preferred glue by carpenters is vinyl but more and more often, many hobbyists and professionals in the sector prefer thepolyurethane glue.

Therevinyl glue, as stated, it is the most used in the woodworking and furniture sector, so much so that it is known aswhite carpenter's glue

Vinyl glue is an aqueous dispersion of aqueous-based polyvinyl acetate resins. On the market, although rarer and less used in the world of woodworking, there is no shortage of solvent-based vinyl glues.

Vinyl or polyurethane glue:advantages and disadvantages for gluing wood

There vinyl glue it has the advantage that it can be more easily detached during but also after processing, so if you are wrong by a few millimeters, you can reposition the piece even after the glue has dried. Two pieces of wood glued with vinyl glue, in fact, can be detached without being damaged and with relative ease. Therepolyurethane glueit's moreoverbearingtherefore it is difficult to detach two pieces of wood glued with PUR without damaging them.

After seeing one of theadvantagesof the use ofvinyl glue, let's point it out immediately with a disadvantage: vinyl hardens very slowly and for this it needs a vice capable of exerting pressure between the pieces to be glued.

Therepolyurethane glueit hardens easily and does not require the use of vices, however it also has a certain effectfiller which is not always appreciable.

Theredifferencesubstantial between thepolyurethane glueis thatvinyl, is that thepure glueit does not penetrate into the wood fibers while vinyl does.

As stated, thepolyurethane glue it hardens quickly and tends to expand and fill voids, while vinyl does not. This feature can be counted among the disadvantages or advantages depending on the use.

In woodworking, the expandability of thepure glueit is almost never an advantage: wood gluing requires precision and the filling effect ofpolyurethane glueit's not easy to manage.

Another aspect to consider, if the use is almost external, it is better to use thevinyl gluewhy thepolyurethane glueit cannot be painted or in any case gives a non-homogeneous result compared to wooden surfaces.

Let's move on to theadvantagesof thepolyurethane glue: this glue resists weather well, it is not afraid of water in direct exposure to UV rays, while thevinyl glue, in the long run, it tends to dry out in the sun and the pieces of wood will tend to come undone.

Woodworking enthusiasts and DIY enthusiasts generally use thepolyurethane glueto work wooden accessories for outdoor use or low-quality wood for jobs that do not require maximum precision. Therevinyl glueit is used for furniture and artifacts for internal use.

Another difference lies in the type of gluing: gluing with thepolyurethane glueoffers a certain degree of stiffness while the one with thevinyl glueit is much more elastic.

The cost differences are not considerable: bothgluesthey are very accessible. A liter ofpolyurethane glueyou can buy it for about 10 euros in shops specialized in the sale of DIY items, the vinyl glue is just as cheap.

Another factor not to be underestimated is conservation: thevinyl glueit can be stored in its purchase package even for long periods, it will last for years. Therepolyurethane glue, as described above, hardens when it comes into contact with moisture, for this reason it can only be stored for a few months and only if properly maintained.

Homemade vinyl glue

For children's crafts or small DIY works, you can use a homemade vinavil type compound. For instructions on how to prepare homemade vinavil, we refer you to the page "How to make vinyl glue at home ".

Glue and wood processing

The vinyl glue is the most used in the world of woodworking precisely because of its ability to penetrate the fibers of this material. It is also the oldest glue in the carpentry sector. If you are passionate about woodworking for gluing and carving, I recommend you read these articles:

  • Wood milling
  • How to bend wood
  • How to smooth wood

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Video: Best Construction Adhesive - Loctite Premium - How We Found Out! (June 2022).


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