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Key Differences
| Product Type |
|
|
| Mix Ratio By Volume | 2A:1B | N/A (gram scale required) |
| Pot Life | 10 minutes | 5 hours |
| Cure Time | 3.5 hours | 24 hours |
| Color | Clear (Slightly Yellow In Thick Sections) | Clear |
Disclaimer
Although we do our best to ensure accuracy, Smooth-On offers no warranties, promises, and/or representations of any kind, either expressed or implied, as to the accuracy, completeness, or reliability of the information contained on this Compare Tool, nor suitability of the information contained herein to your particular circumstances. Smooth-On assumes no liability for losses or damages of whatever nature (direct, indirect, consequential or other) associated with your use, or inability to use, the Compare Tool, or from your use (or failure to use) the information contained herein. Other useful tools include product technical bulletins and our extensive FAQ section. You can also contact our technical support team.All Technical Data
| XTC-3D™ | EpoxAcast™ 690 | |
|---|---|---|
| Product Type |
|
|
| Mixed Viscosity | 350 cps | 280 cps |
| Mix Ratio By Volume | 2A:1B | — |
| Mix Ratio By Weight | 100A:42B | 100A:30B |
| Pot Life | 10 minutes | 5 hours |
| Thin Film Working Time | 20 minutes | — |
| Thin Film Recoat Time | 90 minutes | — |
| Tack Free Time | 2 hours | — |
| Cure Time | 3.5 hours | 24 hours |
| Shore D Hardness | 80 | 80 |
| Specific Gravity | 1.09 g/cc | 1.10 g/cc |
| Specific Volume | 25.1 cu. in./lb. | 25 cu. in./lb. |
| Color | Clear (Slightly Yellow In Thick Sections) | Clear |
| Tensile Strength | — | 6,630 psi |
| Tensile Modulus | — | 572,000 psi |
| Tensile Elongation | — | 1.8 % |
| Compressive Strength | — | 9,610 psi |
| Compressive Modulus | — | 91,300 psi |
| Flexural Strength | — | 10,980 psi |
| Flexural Modulus | — | 410,000 psi |
| Shrinkage | — | 0.002 in. / in. |
| Heat Deflection Temp | — | 115 °F |
| Index of Refraction at 20°C | — | 1.565 |
Product Description
XTC-3D™
XTC-3D™ is a protective coating for smoothing and finishing 3D printed parts. Two liquids are mixed together and brushed onto any 3D print. Coating self-levels and wets out uniformly without leaving brush strokes. Working time is 10 minutes and cure time is about 4 hours (depending on mass and temperature). XTC-3D™ cures to a hard, impact resistant coating that can be sanded, primed and painted. Adding colors and metal effects is easy.
EpoxAcast™ 690
EpoxAcast™ 690 is an UV resistant clear casting epoxy resins suitable for a variety of industrial and art related projects requiring a rigid, clear finished casting. EpoxAcast™ 690 features a very low viscosity for easy mixing and minimal bubble entrapment. Castings cure with negligible shrinkage and are very hard and strong. Resin can be colored with UVO™ or IGNITE™ colorants. Cast Magic™ and Glow Worm™ powders can also be added to create amazing casting effects.