MAS
Deep Pour Epoxy Resin
- Type
- Deep pour
- Data sheet revision
- Revised March 2026
- Sources checked
- 2026-09-30
- Page status
- Published October 3, 2026
A 3:1 deep-pour epoxy whose depth limit depends on batch size: MAS's product page gives 0.5 in for a full mixed 1.3 gallon kit or 1 in for a half kit, in a 60 to 75 °F room.
Published values
Copied as printed, with test conditions where the manufacturer gives them. Tags link to the source document.
| Mix ratio by volume (A:B) | 3A : 1B by volumeTDS |
|---|---|
| Mix ratio by weight (A:B) | 100A : 28B by weightTDS |
| Maximum pour depth per layer | 0.5" for a full mixed 1.3 gallon kit, or 1" for a half mixed kitPagegeneral guideline: 1 in for a half-mixed 1.3-gallon kit, 0.5 in for a full mixed 1.3-gallon kit; larger slabs should be poured thinner. |
|---|---|
| Minimum pour depth | not published |
| Maximum mass or volume per pour | not published |
| Recommended temperature | 60F-75FPageall materials and working conditions, maintained constant; do not use above 75°F |
| Pot life | not published |
|---|---|
| Gel time (lab mass) | 5.5 h (150 g mass)TDSat 25°C, 150 g mass |
| Working time | 3 hr working timePage |
| Time between pours | not published |
| Recoat window | not published |
| Tack-free | not published |
| Demold | not published |
| Full cure | 24-36 hours at 70FPageat 70°F; published as 'cure within 24-36 hours' / '24-36 hr cure time', not explicitly labelled full cure |
| Mixed viscosity | 260 cP (initial mixed, 25C)TDSinitial mixed viscosity at 25°C, ASTM D2196 |
|---|---|
| Specific gravity or density, Part A | not published |
| Specific gravity or density, Part B | not published |
| Specific gravity, mixed | not published |
| Density, mixed | not published |
| Hardness | 82 Shore DTDS |
What the numbers mean for a pour
Pours needed with a limit of 1/2 in per pour, the strictest of the limits the documents give. Worked out with the layer planner.
| Total thickness | Pours | Earliest start of last pour | Notes |
|---|---|---|---|
| 1 in (25 mm) | 2 | not published | – |
| 2 in (51 mm) | 4 | not published | – |
| 3 in (76 mm) | 6 | not published | – |
| 4 in (102 mm) | 8 | not published | – |
The data sheet does not publish a time between pours, so no schedule is calculated.
What the manufacturer says
Paraphrased from the manufacturer’s documents.
Other notes
- The TDS gives per-part liquid densities of 9.3 lbs/gal (resin) and 7.9 lbs/gal (hardener) at 25°C (ASTM D1475).TDS
- Gel time is 5.5 hours for a 150 g mass at 25°C.TDS
- Cured density is published as 1.15 g/cm³ (0.040 lbs/in³); this is the cured solid, not the mixed liquid.TDS
- MAS's headline positioning is pours of 1/2 to 1 inch per layer.Page
- The TDS calls for gloves, protective clothing and eye/face protection, and use only outdoors or in a well-ventilated area.TDS
Temperature
- MAS warns not to use Deep Pour above 75°F, where it can set too fast, overheat and yellow, distort, shrink or crack.Page
Layering
- Thicker castings are built by step-pouring multiple layers, and larger slabs should be poured thinner than small castings.Page
Surface preparation
- Deep Pour must not be poured onto unsealed wood or porous surfaces, or moisture will cause foam and bubbles.TDS
Heat
- The TDS lists a heat deflection temperature of 118°F after room-temperature cure and 122°F after post cure.TDS
Where the manufacturer’s documents disagree
- Maximum pour depth per layer: 1" thinkness max for 1/2 gallon pour or .5" thickness for 1 gallon pours (product page Benefits list) vs. do not exceed 0.5" casting thickness for a full mixed 1.3 gallon kit, or 1" for a half mixed kit (product page Maximum Casting Thickness) (Page, Page). Both statements are in the Page; the table shows “0.5" for a full mixed 1.3 gallon kit, or 1" for a half mixed kit”.
Not published
The documents listed below give no value for: Minimum pour depth; Maximum mass or volume per pour; Pot life; Time between pours; Recoat window; Tack-free; Demold; Specific gravity or density, Part A; Specific gravity or density, Part B; Specific gravity, mixed; Density, mixed. We leave these blank rather than estimate them.
Use this product in a calculator
Sources
- MAS. DEEP POUR Clear Casting Epoxy Resin System Technical Data Bulletin (TDS). Document revision: Revised March 2026. Accessed September 30, 2026.
- MAS. Deep Pour Epoxy Resin (Page). Accessed September 30, 2026.