Molda Fin Long is a formulated hemihydrate plaster used in ceramics to produce working moulds for the slip casting of Sanitaryware. This product can be used when a long working time is needed to cast plaster moulds
For slip casting in sanitaryware
Long setting time
Good surface aspect
| Chemical Properties | |
|---|---|
| Chemical Composition | CaSO4.1/2H2O |
| Chemical Name | Calcium sulphate hemihydrate |
| Colour | white |
| Minimum gypsum purity % | 91 |
| Setting Parameters | |
|---|---|
| Initial setting time (minutes) | 20 |
| Vicat Ring Fluidity (cm) | 18 |
| Physical Properties | |
|---|---|
| Particle Size (% weight retained) |
0.05% at 200 µm 1% at 100 µm |
| Plaster to Water Ratio | |
|---|---|
| Plaster to water mix ratio (by weight) | 100/67 |
| Plaster to Water Ratio (by weight) | 1.50:1 |
| Water to plaster ratio (by weight) | 67% |
The recommended plaster to water ratio is between 1.35:1 and 1.50:1, with a mixing time of approx. 2 to 4 minutes, depending on batch size and plaster shop process.Mixing utensils should always be clean and free from set plaster. Use distilled water only. For consistent results, attention must be given to the correct proportioning and mixing of the plaster and water.Add the weighed quantity of plaster slowly into the measured volume of water and allow to soak. Do not mix fresh plaster with that which has been mixed for some time previouslyChanges to plaster to water ratio will influence product performance, particularly setting time and strength and absorption capability.The following graphs help illustrate how varying ratios will affect compressive strength and water absorption.
Packaging available : 25 kg
Shelf life : 10