Gear guide
Best UV resin for jewelry making: clear, hard and low odor
Picked from Amazon listings, not hands-on tests. How we pick
UV resin for jewelry making needs to do three things: flow into a bezel or a small mold, cure hard instead of bendy, and come out from under the lamp without a sticky surface. Hard type resins are sold for exactly that, and the bottles look much alike, so this guide compares six of them by what their Amazon listings state: cure time, the lamp the listing names, viscosity, hardness and total weight. Nothing was cured for this guide. Low viscosity resin, around 2000 cps where a figure is given, runs into small molds; none of these listings is a thick doming formula. Tack-free, low odor and anti-yellowing statements are the makers' claims and are reported that way. None of the listings states a lamp wavelength; resin lamps work at 365 to 405 nm, and a clear layer of about 2 mm takes 30 to 90 seconds under a UV-LED lamp or 2 to 4 minutes under a 36 W tube lamp. A thin tacky film on a hard piece is normal for many UV resins and wipes off with isopropyl alcohol.
Compare the picks
| Pick | Viscosity | Cure time | Price | Per g | Link |
|---|---|---|---|---|---|
 KISREL hard type UV resin, 300 g bottle | not stated | 1-3 min with 36 W lamp | - | - | Amazon |
 Craft Resin hard type UV resin, 500 g | low, no figure | 1-3 minutes | - | - | Amazon |
 Bsrezn hard UV resin, 400 g in 4 bottles | 2000 cps | not stated | - | - | Amazon |
 LET'S RESIN hard UV resin, 300 g bottle | 2000 cps | Minutes (lamp not stated) | - | - | Amazon |
 ULLFEU clear hard UV resin, 1000 g | not stated | 1-3 minutes | - | - | Amazon |
 YIEHO hard type UV resin, 300 g bottle | Low (no figure) | not stated | - | - | Amazon |
Facts are taken from each Amazon listing. Prices are checked daily and shown with their date.
If you just want one
- Closest match for the jobKISREL hard type UV resin, 300 g bottleNames the lamp and the time: 1 to 3 minutes of curing under a 36W UV lamp.
- Most for the money on paperULLFEU clear hard UV resin, 1000 gStates the method: a UV lamp on the front and back of the mold for 1 to 3 minutes.
- Most complete listingCraft Resin hard type UV resin, 500 gHardness and shrinkage are stated: 85D and less than 2 percent, useful for wearable pieces.
The picks in detail
Pick 1 · KISREL
KISREL hard type UV resin, 300 g bottle
See price on AmazonA 300 g bottle of hard type UV resin sold for jewelry making. The listing states a 1 to 3 minute cure under a 36W UV lamp and a hard, non-stick surface after curing.
What the listing offers
- Names the lamp and the time: 1 to 3 minutes of curing under a 36W UV lamp.
- The listing states the cured piece is hard, non-stick and crystal clear, with a reduced odor formula.
- Described as self-leveling, and the listing says mica powder, colorants, glitter and sequins can be mixed in.
Limits to know
- No viscosity or hardness figure is given, so there is no number to compare with the 2000 cps resins.
- The listing advises not touching a piece right after curing, until it has cooled, to avoid leaving fingerprints.
Pick 2 · Craft Resin
Craft Resin hard type UV resin, 500 g
See price on AmazonFive 100 g bottles of hard type, low viscosity UV resin. The listing states a 1 to 3 minute cure with the brand's 24W UV light, 85D hardness and less than 2 percent shrinkage.
What the listing offers
- Hardness and shrinkage are stated: 85D and less than 2 percent, useful for wearable pieces.
- Packed as 5 bottles of 100 g, so most of the resin stays sealed while one bottle is in use.
- The listing says the low viscosity resin pours into tiny bezels and mini molds, and names jewelry making.
Limits to know
- The cure time of 1 to 3 minutes is tied to the brand's own 24W light, which is not included.
- Low viscosity is claimed without a cps figure in this listing, and no lamp wavelength is stated.
Pick 3 · Bsrezn
Bsrezn hard UV resin, 400 g in 4 bottles
See price on Amazon400 g (14 oz) of hard UV resin in four bottles. The listing states a low viscosity of 2000 cps, a hardness of 85D and shrinkage under 2 percent, and names earrings and pendants as uses.
What the listing offers
- States three figures: viscosity 2000 cps, hardness 85D and a shrinkage rate under 2 percent.
- Four separate bottles keep unused resin sealed, and the listing names earrings and pendants as typical pieces.
- The listing advises translucent silicone molds so UV light reaches the resin from all directions.
Limits to know
- No cure time and no lamp wattage or wavelength appear in the listing bullets.
- The yellow-resistant finish is the maker's claim; the listing gives no test or time span for it.
Pick 4 · LET'S RESIN
LET'S RESIN hard UV resin, 300 g bottle
See price on AmazonA 300 g hard UV resin for casting and silicone molds. The listing states a low viscosity of 2000 cps, shrinkage under 2 percent and curing with UV light in minutes, without naming a lamp.
What the listing offers
- Viscosity is stated at 2000 cps, and the listing says it flows smoothly into tiny molds.
- Less than 2 percent shrinkage is stated, and resin earrings are named among the uses.
- The listing describes a low odor formula with enhanced anti-yellowing properties, as the maker's claim.
Limits to know
- Cure time is given only as minutes, and no lamp wattage or wavelength is named.
- High hardness is claimed without a Shore figure, unlike the two 85D listings in this guide.
Pick 5 · ULLFEU
ULLFEU clear hard UV resin, 1000 g
See price on AmazonA 1000 g bulk pack of clear hard UV resin. The listing states 1 to 3 minutes under a UV lamp on the front and back of the mold and names earrings, rings, pendants and keychains.
What the listing offers
- States the method: a UV lamp on the front and back of the mold for 1 to 3 minutes.
- 1000 g suits people making jewelry in volume, and the listing names earrings, bracelets, rings and pendants.
- The listing says active diluents were added to reduce VOCs and odor, and antioxidants to resist yellowing.
Limits to know
- No lamp wattage, viscosity or hardness figure is stated, so it is hard to compare on numbers.
- A kilogram is a lot for occasional pendants, and the title's no odor wording is the maker's claim.
Pick 6 · YIEHO
YIEHO hard type UV resin, 300 g bottle
See price on AmazonA 300 g bottle of hard type UV resin. The listing names its ingredients, mentions a Safety Data Sheet and REACH requirements and describes low viscosity, but gives no cure time or lamp.
What the listing offers
- The listing names the resin chemistry: bisphenol A epoxy acrylate, polyurethane acrylate and epoxy acrylate.
- States that a Safety Data Sheet is available and that the ingredients meet REACH requirements.
- Comes with a detailed instruction manual covering how to avoid bubbles and improve curing, per the listing.
Limits to know
- No cure time, lamp wattage or wavelength is stated in the listing bullets.
- Low viscosity and super hard are claimed with no cps or Shore figure to compare.
Read before you buy
- UV resin vs epoxy resin: differences, cost and best usesUV resin cures in minutes under a lamp in 2 to 3 mm layers. Epoxy needs mixing and 24 to 72 hours but pours 1/8 in to 2 in deep. Table and picks by project.
- Why UV resin stays sticky or will not cure, and how to fix itUV resin sticky after curing? Match what you see in the table: tacky film, sticky mold side, soft inside or dense color. Fixes with lamp times and limits.
- UV resin curing time chart by lamp type, thickness and colorUV resin cure times by light source from maker instructions: 30 to 90 seconds under a UV-LED lamp, 2 to 4 minutes under a 36 W UV lamp, longer in sun.
- Epoxy and UV resin heat resistance chart for coasters and traysHeat limits for named clear epoxies, in F and C, as printed on maker data sheets: use limits of 120 to 130 F and heat deflection of 100 to 122 F.
- Is UV resin safe to use at home? Skin contact, fumes and curingWhat a UV resin safety data sheet says about skin contact, fumes and cured pieces: H315, H317, H319, gloves, ventilation and how to read the 16 sections.
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Resin and Mold chooses every product independently from what its Amazon listing states. We may earn a commission from the links above. As an Amazon Associate I earn from qualifying purchases.