AC100 User guide

It is essential to use both accurate scales and a Jesmonite High-shear Mixing Blade to ensure that the compound performs within its specification. Failure to follow these instructions can lead to strength loss, slow cure, and reduced durability.
Workshop conditions should be warm, dry, and out of direct sunlight. Environments where solvent-based compounds are in regular use should be avoided. Mixing containers should be clean and dry, and of a suitable size.

1 : 2.5
For example 100g of liquid for 250g of powder

If you want to cast a solid colour, mix the pigment into the pre-weighed AC100 liquids, blend thoroughly and slowly add the
Jesmonite base to the liquids whilst mixing until the mix is smooth, flowing and free from lumps. Alternatively, you can add the
pigment to the mixed Jesmonite, experiment by swirling it through to create different effects. You will not need much pigment;
the standard addition rate is 2% by weight of total mixed Jesmonite (or 20g/kg) so for these sized casts you will only need a few
grams. If you add too much pigment, it will stop the Jesmonite from setting or make the cast object weak and breakable.

For simple casts like the enclosed, pour a small amount of the mix into the mould and coat the surface evenly. To avoid any air bubbles on the surface, use a small clean, dry brush to coat the surface evenly and get into the edges of your mould. You can tap the mould too to get rid of surface air bubbles. Then fill up the mould with the remaining mixed Jesmonite, gentle tapping of the mould will help any air bubbles rise to the top surface. Then leave your cast for about 30-40 mins to set. Once
you have taken it out of the mould, it will gain its full strength after 24 hours. Jesmonite needs all the moisture to evaporate to gain its strength, if you leave it in the mould it will sweat, may mark, and not dry thoroughly.

Jesmonite AC100 contains a high quality pure acrylic resin that can be polished with a clean cotton cloth. Excellent results can be achieved with a wide range of waxes and polishing machinery, and Jesmonite AC100 is also compatible with a wide range of water-based sealers and varnishes.

As a basic rule liquid containers should be kept well sealed to prevent water evaporation and skin forming, freezing must be avoided. They should be stored at a constant temperature between 5 – 25°C and used within twelve months from the date of manufacture. Base should be kept dry and stored at 5 – 25°C and used within 12 months from the date of manufacture

Because Jesmonite is water based, its easy to clean up when you have finished. Scrape any excess unused
Jesmonite into the bin then wash your hands, mixing pots, brushes, and the mould in warm soapy water. It’s that easy! You can use White Spirit to remove any pigment residue from your mould if necessary