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MoldLay

Ref.: MOLD-LAY-175-750

59.95 €

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Approximate delivery date: Wednesday 16 October

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MoldLay is a new filament with wax-like properties. It is very stiff at room temperature but becomes extrudable when heated to 170-180 °C. This filament was designed by renowned German developer of new 3D printing filaments Kai Parthy of Lay-Filaments. He is the inventor of the most interesting compounds currently available on the market - filaments such as Chamberlay 100, Layfomm, LayWoo-D3 or Lay-Brick, all extremely easy to print on any FDM/FFF 3D printer.

A figure made with the help of MoldLay

Image 1: A figure made with the help of MoldLay. Source: Lay Filaments.

MoldLay is a filament that can print both molds for lost wax casting and for permanent molding. It is extremely stable and remains dimensionally rigid at room temperature.

The main features of this filament are:

Virtually zero strain.
No need for a heated bed.
Can be printed at temperatures from 170 ºC to 180 ºC.
The molds should be treated at 270 °C in an oven (a kitchen oven is valid to reach this temperature).

First the 3D model that is to be obtained through a mold must be designed and 3D printed. Once it has been printed with the MoldLay filament, it must be surrounded with a clay or concrete to harden. Once the block of clay has hardened, it is placed in an oven at about 270 °C. This will melt the MoldLay inside the concrete and cause it to flow out of the mold like hot paraffin wax, leaving the mold ready for being filled with the desired metal.

Lost wax casting with MoldLay

Image 2: Lost wax casting with MoldLay. Source: Lay Filaments.

Once the metal cooled it is time to break the mold and retrieve the object inside. The model will be a similar copy of what was originally printed with the MoldLay filament. The only difference is that it will be metal rather than wax. There can always be some clay or concrete attached to the metal object. This can be removed by immersing the object in citric acid for a few hours.

It is a long process, but saves a lot of money by not having to sacrifice the piece in the mold as is done by hand. MoldLay goes a step further into the world of 3D printing, opening the doors of metal molding parts based on a piece printed in a 3D desktop printer, opening the door to mass production.

Permanent mold casting with MoldLay

Image 3: Permanent mold casting with MoldLay. Source: Lay Filaments.

There have been many attempts at molding starting from a piece made with 3D printing filament, however they all have failed. Many have tried to make this process with PLA, but this requires having a furnace at a higher temperature to melt and the melt does not easily leave the mold cavities. MoldLay does not require such high temperatures (a kitchen oven will do) and it does not emit toxic fumes when melted. MoldLay is a type of plastic with wax-like properties. At room temperature it is very rigid and solid and becomes extrudable when heated to 170-180 °C. When heated in an oven at 270 °C, this liquid becomes a thin oil viscosity.

Image 4: A permanent mold made with MoldLay. Source: Lay Filaments.

MoldLay is perfect for use on two different techniques of creation: Lost (or lost wax) casting and permanent mold casting. Both traditional techniques are time-consuming creation but it is now easier than ever thanks to the use of a 3D printer and the MoldLay filament.

General information
Material	PLA
Format	50 g / 250 g / 750 g
Density	1.18 g/cm³
Filament diameter	1.75 / 2.85 mm
Filament tolerance	± 0.1 mm
Filament length	(Ø1.75 mm, 0.25 kg) ±88.1 m / (Ø2.85 mm, 0.25 kg) ±33.2 m / (Ø1.75 mm, 0.75 kg) ±264.2 m / (Ø2.85 mm, 0.75 kg) ±99.6

Printing properties
Printing temperature	175 - 180 ºC
Print bed temperature	Max. 40 ºC
Chamber temperature	✗
Cooling fan	✓
Recommended printing speed	- mm/s

Mechanical properties
Elongation at break	20 %
Tensile strength	42 MPa
Tensile modulus	1950 MPa
Flexural strength	- MPa
Flexural modulus	- MPa
Surface hardness	-

Thermal properties
Melting temperature	170 ºC
Softening temperature	- ºC
Softening temperature	55 ºC

Specific properties
Transparency	✗

Other
HS Code	3916.9
Spool diameter (outer)	200 mm
Spool diameter (inner hole)	125 mm
Spool width	30 mm

It is advisable to print with hot bed about 40 ºC, although you can print with him but we do not have a 3D printer with warm base. The nozzle temperature can range between 170ºC and 180ºC. Once printed with the filament MoldLay, then we must surround this piece with a clay or concrete to harden. Once the block of clay has hardened, it is placed in an oven at about 270 °C.

This will melt the MoldLay inside the concrete and cause the flow out of the mold as hot paraffin wax leaving the mold with the perfect way to do laundry. This leaves a great cast within the concrete block, which can be filled with the desired metal then. Once the metal cooled it is time to break the mold and retrieve the object inside, it will be a similar copy to which it was originally printed with the MoldLay filament. The only difference is that metal is rather wax. You can always be some clay or concrete attached to the metal object. This can be removed by immersing the object in citric acid for a few hours.

Masterspool format

The 250 g. format of the Moldlay filament can sometimes cause problems during the printing process because it does not include a spool that helps the correct supply of material from the 3D printer.

To avoid this type of problem when printing this and other filaments that are sold in masterspool format you can use a variable spool holder. Thanks to the use of this device, all kinds of tangles and overlaps derived from the absence of a spool are largely avoided.