- Stock: In Stock
- Product code: 00-00000258
- Weight Brutto: 1.55kg
- SKU: RS-F2-CW40-01
Castable Wax 40: Jewellery Resin with 0% Ash Residue
The Castable Wax 40 jewellery resin stands out for its high wax content (40%) and its exceptionally low thermal expansion coefficient.
Following the success of Castable Wax resin (with 20% wax content), Formlabs has developed a new formula with a wax loading of 40%. This polymer combines solid and liquid waxes that work together to ensure minimal expansion and exceptional behaviour during casting. As a result, it supports a wide variety of conditions in lost-wax casting and is fully compatible with traditional plaster investment materials.
If you choose to outsource your casting, this polymer will deliver consistently flawless results, as it guarantees 0% ash residue after burnout and does not require mandatory post-curing.
With Castable Wax 40, you can cast without complications — from heavy jewellery pieces to extremely intricate details such as engraved text, holes, and microchannels. This is made possible by the industry's best castability.
40% Wax Resin for Professional 3D Printing
With Castable Wax 40, you can transition from traditional wax modelling to a digital workflow based on 3D printing with complete ease.
- Simplified casting: Castable Wax 40 is compatible with a wide range of burnout cycles and with the most widely used investment materials in the jewellery sector.
- Design freedom: During the development of this material, the manufacturer minimised the common defects associated with thermal expansion. Heavier, more complex jewellery pieces are now far easier to cast.
- Optimised ecosystem: Thanks to its ease of use and innovative materials such as Castable Wax 40 resin, you can produce final casting models and high-precision prototypes with your Form 3 3D printer.
Castable Wax 40: Burnout Properties
| Green Part1 | Method | |
| Burnout Properties2 | ||
| Temperature for 5% mass loss | 249 °C | ASTM E 1131 |
| Ash content (TGA) | 0.0–0.1% | ASTM E 1131 |
1 Material properties may vary depending on part geometry, orientation, print parameters, and temperature.
2 Data obtained from green parts printed on a Form 3 at 50 microns using the Castable Wax 40-specific settings, without post-curing.
Standard Burnout Cycle for Formlabs Castable Wax 40
The following burnout schedule has been designed to reduce the thermal expansion of the resin within the mould, ensuring complete material elimination even in thick jewellery pieces. We recommend using Certus Prestige Optima™ investment. Use this schedule as a starting point and adjust it to suit your specific requirements.
| Phase | Time | Temperature °C | ||
| A | After the investment has set (30–60 min), place the flasks into the kiln. | Hold | 180 min | 55 °C |
| B | Thermal transition. Wax channels evacuate, facilitating airflow. The wax within the resin penetrates the investment. Combustion begins gently without causing sudden expansion. | Ramp | 48 min | 2 °C/min |
| Hold | 180 min | 150 °C | ||
| Ramp | 75 min | 2 °C/min | ||
| Hold | 180 min | 300 °C | ||
| C | Burnout. Remaining resin and ash residues are eliminated from the mould. | Ramp | 108 min | 4 °C/min |
| Hold | 180 min | 732 °C | ||
| D | Casting temperature. Cool the flask down to the ideal temperature for your chosen metal. | Cool | 44 min | -5 °C/min |
| Casting window | Up to 2 hours | Desired temp. |
Washing Parameters in Form Wash
Duration in Form Wash: 5 min (repeat twice).
Wash your Castable Wax 40 printed parts in isopropyl alcohol (IPA) for 5 minutes. Perform a second wash of another 5 minutes in fresh IPA to remove any uncured resin residue. Dry the parts thoroughly with compressed air. Do not use TPM for washing.
Optional Post-Curing in Form Cure
Duration in Form Cure: 30 min, without heat.
Post-curing is not strictly necessary for most parts printed with Castable Wax 40. However, you can increase the mechanical strength of your parts by running this process in your curing unit.
