Free delivery in Benelux until 10kg.
€ 23,98 – € 349,32 HTVA
FEINGOSIL 120 is a two-component, condensation-curing silicone rubber.
Its high precision, good elongation and exceptional tear resistance make it the silicone of choice for molds with low undercuts.
This silicone enables the casting of base materials such as gypsum-based products, waxes or reconstituted stone, but is also suitable for polyester, epoxy or polyurethane resin replicas.
Mixing ratio: 5% (e.g.: 100gr silicone + 5gr catalyst E)
Appearance: viscous liquid
Hardness (Shore A): 20
Pot life at 23°C: 10′ catalyst fast / 90′ catalyst slow
Demolding: 2 – 24h catalyst fast / minimum 24h catalyst slow
Viscosity (mPa.s): 25000
Density (g/cm³): 1.14
Color uncatalyzed: white
Elongation (%): 550
Linear shrinkage (%): < 0.7
Shelf-life: 12 months in original packaging between 5°C and 25°C.
Packaging: sold by kit (A+B): 1kg + 50 gr/ 5 kg + 250 gr/ 20 kg+1kg
is added to the mixture (A+B) to adjust its texture. A layer of silicone can then be applied without running off the surface of the mold. Mixing ratio: Add 1 to 3% thixo to the A+B silicone mix.
B. Catalyst slow 90
The catalyst triggers the chemical reaction that hardens the silicone, transforming the liquid silicone into a solid, flexible material. The “slow-setting” catalyst offers a longer, more comfortable working time.
C. Catalyst fast 10′
The “fast-setting” catalyst accelerates the curing time of the silicone, so working time is very short, but demolding can take place a few hours later.
D. Pigment
If the surface of the model to be reproduced is porous (such as wood or plaster), it is advisable to apply a coat of varnish orrelease agent to prevent the silicone from seeping into the pores and adhering to the object.
Make a form that completely surrounds the object, leaving enough space to contain the silicone (usually 1 cm thick).
Make sure the formwork is perfectly watertight to avoid leaks or accidents.
Don’t forget to fix or glue the object to the base to prevent the silicone from slipping underneath and causing it to float to the surface of the formwork.
In a clean, dry container, weigh out the quantity of silicone required and calculate an addition of 5% catalyst (e.g.: 100gr silicone + 5gr catalyst).
Using a spatula, mix the two components until a homogeneous paste is obtained.
With mechanical assistance, keep the speed low (300 to 500 rpm) for 2 to 3 minutes and keep the mixer head in the silicone to limit the incorporation of air bubbles.
Aim for the lowest point and pour the silicone in a thin vein.
The first coat can be applied directly with a brush, then the rest of the mold can be filled.
Allow the silicone to harden at room temperature.
You can unmold the next day.
Make sure you don ‘t move the formwork during this phase to avoid distortion.
For epoxy resin prints, it’s best to let the mold dry for 2 days, to ensure full chemical and mechanical resistance.
Working tools are cleaned the following day, and silicone can be removed manually when dry.
Work in a ventilated area.
Wear protective gloves.
Skin contact: Wash thoroughly with soap and water. Remove and wash contaminated clothing. Consult a doctor if you develop a rash.
Eye contact: rinse eyes thoroughly with running water. Consult a doctor if irritation persists.
Ingestion: do not induce vomiting unless told to do so by a doctor. Seek medical advice.
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