Recently, Kai Parthy, a well-known German inventor of 3D printed materials, discovered that Layfomm 40, a material he developed, has some very unique attributes that, if used properly, will add color to your 3D printer. Unlike all other 3D printed materials, Layfomm 40 has a viscoelastic property. Layfomm 40 is ideal for printing solid plastic objects that exhibit this viscoelasticity after being immersed in liquid for a period of time or in a constant room temperature environment for a period of time.
Layfomm 40 before soaking
Layfomm 40 after soaking in water
There are several liquids that can induce the same effect on Layfomm wire. For example, a mixture of gasoline and alcohol, low concentration of glycerin or different concentrations of salt solution. These can make it show viscoelasticity.
However, after talking for a long time, what is the use of Layfomm 40's viscoelasticity? We have all heard of elastic materials (such as rubber), can stretch with force, and immediately return to the original shape after letting go. The viscoelastic material is different. When you stretch the viscoelastic material, it will not return to its original state when you let go.
This is called viscoelasticity, a "slow" expression of the elastic effect, which means it takes a long time (up to a few minutes) to return to its original shape.
This newly discovered property of Layfomm wire is expressed at room temperature, making it a very interesting material that can be used for many special applications.
For example, as Kai has tried, you can use it to print your own sponge. As you can see from the video below, a porous 3D object printed with Layfomm is soaked in water for a while and becomes almost exactly the same as a sponge.
Of course, you can also use it for other purposes, such as cushioning, shock absorption, insoles, or mechanically used for damping motion.
Layfomm materials are available on eBay or other online stores for a price of 250 grams and 26 euros.
(Editor)
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