Wax guides · Soy
NatureWax C-3
At a glance
Cargill's 100 percent soy jar wax with a higher melt point than many soy waxes, but touchy about pour temperature and frosting.
- Best for
- Soy-only jar candles at about 6 to 8 percent fragrance when you can control pour temperature.84
- Watch out
- Pour temperature and frosting. Craters, cracks and frosting rise when the pour is off or fragrance goes above 8 percent. No wick sizes from makers were found.810 See problems Read the notes
Find your wick for NatureWax C-3
Every wick size for NatureWax C-3
From supplier charts and makers' own tests.
4 lines.
| Jar width | Wick | Fragrance | Supplier starting point | What makers found |
|---|---|---|---|---|
| 3 in / 76 mm | Cotton CD | Not given | None | CD 12, 14 or 16 (also CDN 12-16, CSN 14) One maker's report What they sawOne maker says wicks that work in 3 in wide containers now run from CD 12 to 16 (also CDN 12 to 16 and CSN 14); this maker began years ago with CDN 10 and the wax later needed a bigger wick. ECO did not work well for this maker.11 Only one maker has reported this. Test it before you trust it. |
| 2.64 in / 67 mm | Cotton ECO | 7% | None | ECO 2, 6, 8 and 10 (all gave a burnt smell) One maker's report What they sawOne maker in a 2.64 in wide vessel with 7% fragrance, cured a week, tried ECO 2, 6, 8 and 10 and got a burnt-wick smell from all of them, so ordered CD (Stabilo) wicks to try.12 Only one maker has reported this. Test it before you trust it. |
| Not stated | Cotton ECO | Not given | None | ECO 8 One maker's report What they sawOne maker in 9 oz straight-sided jars (width not given) found ECO 8 best in a no-fragrance test; with a CandleScience fragrance it reached a full melt pool on the 4th burn with some residue on the sides, and the maker asked whether to size up.13 Only one maker has reported this. Test it before you trust it. ECO (size not given) One maker's report What they sawOne maker who works with C-3 in several container sizes names ECO as the wick of choice (sizes and jars not given).14 Only one maker has reported this. Test it before you trust it. |
| 3.07 in / 78 mm | Cotton TCR | 8% | None yet |
Problems makers report
Frosting grows with fragrance load and dye
What makers do: One supplier's tests saw almost none at 70 C pour, side frosting above 8 percent fragrance, and more with big dye amounts and dark colors. A maker blog says frosting cannot be avoided in soy but can be lessened. Candle Shack says light frosting with dye is normal.8104
Read the fix: Frosting and Wet Spots in Candles: Causes and Fixes
Very sensitive to pour temperature: craters, cracks, poor adhesion
What makers do: Pour near 70 C (158 F). The supplier test saw poor adhesion below 65 C or above 79 C and some higher-load candles cracked or cratered. Warm the jars in cool rooms. A heat gun fixes most tops, but loads above 8 percent frosted when heat-gunned.8105
Read the fix: Why Does My Candle Have Sinkholes or Cracks After It Sets?
Batch-to-batch differences change the wicking
What makers do: A maker blog reports variation in moisture and quality between batches that affects wicking, so re-test when you open a new lot.10
More fragrance is not a stronger throw
What makers do: One supplier's tests found 12 percent no stronger than 6 percent, with a big sinkhole, side frosting and sweating by 24 hours; 6 to 8 percent was best for hot throw. A maker blog (the author calls it anecdotal) says C-3 needs more wick power than paraffin or palm for the same throw.108
Wide jars need more wick
What makers do: The supplier test says jars wider than 8 cm (about 3.1 in) need two wicks for a full pool and hot throw. Bomar's sheet says candles over 3.5 cm wide may need a thicker wick.82
Air pockets and sinkholes that look like tunneling
What makers do: One experienced maker says C-3 that cools too fast or unevenly forms air cavities that look like tunneling: poke holes with a skewer, open them up and do a second pour. Another maker blamed sinkholes for a bad test batch.1516
Wicks need a re-check as the wax cures and over the years
What makers do: One maker says to wait a week, better two, before judging a wick, because Cargill soy waxes harden a lot over time and that can change the wick you need by a size or more. This maker also says C-3 needed bigger wicks than in the early days.1115
Notes from the sources
- Cargill's data sheet gives a Mettler dropping point of 124 to 130 F and an iodine value of 50 to 56. It gives no pour, fragrance or wick data. Bomar's lot sheet shows a 53.83 C melt point (spec 51 to 55 C).12
- Fragrance limits conflict: Bomar's sheet says 6 percent maximum (7 to 10 percent only with additives); Candle Shack lists 8 to 10 percent and 7 to 8 percent in most blends; Supplies For Candles lists 8 to 10 percent in its table but a 7 to 8 percent maximum in its product text; the Fragrances For Candles tests say up to 10 percent with 6 to 8 ideal.2478
- Temperatures: Candle Shack heats to 65 to 70 C (149 to 158 F), adds fragrance then and pours at 65 C (149 F). Supplies For Candles' table says melt to 80 to 90 C (176 to 194 F) and pour at 60 to 70 C (140 to 158 F); its product text says pour at 50 to 65 C (122 to 149 F). Bomar says melt at 160 to 200 F and pour at 120 to 180 F.5672
- Candle Shack's own 30cl recipe pairs it with TCR 30/18 in a jar 78 mm (3.07 in) wide at 8 percent of total weight (17.6 g fragrance in 202.4 g wax). This is one supplier recipe, not a chart. Supplies For Candles names TCR, Eco and Stabilo as the wick series but gives no sizes.567
- CandleScience stopped selling C-3 in 2020 because of sourcing concerns about Cargill, and its C-3 wick chart and lab notes are no longer on its site. Its wick guide has no C-3 section.39
- Wood wicks: no C-3 wood wick chart or maker report was found.3
Sources
Every number on this page comes from one of these. Checked November 8, 2026.
- Cargill NatureWax C3 Technical Data Sheet, material 100087265, revised 2020-06-18 (Imperial Supply copy) Maker of the wax
- Bomar (Ireland) NatureWax C-3 flakes analysis and instructions, batch R0413, version 9/17 Supplier
- CandleScience C-3 page: discontinued 2020 over Cargill sourcing concerns Supplier
- Candle Shack: Nature Wax C-3 product page Supplier Read as a summary.
- Candle Shack recipe: Spiced Orange in C3, 30cl (wick, jar, fragrance load) Supplier
- Candle Shack recipe: Effete in C3, 30cl (wick, jar, fragrance load) Supplier
- Supplies For Candles (UK): Nature C3 Container Wax Supplier
- Fragrances For Candles: How to work with Cargill NatureWax C3 (supplier's own tests, 2025-08-27) Supplier
- CandleScience wick guide (checked: no C-3 section) Supplier
- Armatage Candle Company: The Ultimate Guide to NatureWax C-3 Soy Wax (Kevin Fischer, 2021-04-03) Blog
- Craft Server thread 'Wax and Wick Test 1 - C3 Soy Wax', page 3 (TallTayl, 2021) Forum
- Craft Server thread 'Wax and Wick Test 1 - C3 Soy Wax', page 3 (Nicoline, 2021) Forum
- Craft Server thread 'Should I wick up?' (lilo, 2020) Forum
- Craft Server thread 'Wax and Wick Test 1B - C3 Soy Wax Part 2' (Simon-RSA, 2018) Forum
- Craft Server thread 'Wicking Naturewax C3' (TallTayl, 2018) Forum
- Craft Server thread 'Help with Wick Testing C3' (charbonyes, 2019) Forum