Liquid Diamond Casting Resin

Liquid Diamonds Casting Resin is an amazing high quality casting resin.  It is crystal clear and cures within 24 hours in correct room temperature. Liquid Diamonds Casting Resin was designed for the crafting industry.  Users have stated that it is the best casting, embedding & jewellery resin.


Ideal applications are for castings, molds, jewellery making, pen turning and a variety of other areas. Because this product has such a low viscosity, it allows for micro-bubbles to dissipate before cure.   It is safe to use indoors, no harsh chemicals such as solvents or alcohols and VOC free.  Safe to use on foams and delicate pieces.  This resin can be used for coating or encapsulating as well.  Excellent for silicone molds, woods, concrete, pebble floors, tiles and rock.

  • Low viscosity (moves similar to water)

  • Bubble free

  • Slow setting casting resin (cures within 24 hours @ room temperature of 25°C / 78°F)

  • Pieces cured after 24 hours (1/4" sample) will exhibit very hard finishes (D-78)

  • Cures to demold time in about 16-24 hours, and fully cured/machinable by 24-48 hours.

  • Appropropriate for small to deep castings. 

  • Pressure chamber not required for most applications.   

  • UV Resistant. 

  • Scratch Resistant. Cures very rigid, rock hard. 

  • Cures crystal clear like glass. 

  • Resists scratching, scuffing

  • 45 - 55 minute work time (pot life) at 150 grams. Low exotherm (heat) applied to your pieces.

  • High gloss finish

  • Heat resistant up to 120°C / 248°F (after 3 weeks full cure) 

  • 2:1 ratio by weight or volume (weight is more accurate)

  • No VOC's

  • FDA Compliant

  • No smell

  • 100% Solid Systems Epoxy

  • 6-12 month shelf life (depending on how it is stored). 6 months shelf life once opened.

*Please note: Curing time on all resins can vary based on temperature and humidity.  Liquid Diamonds Casting Resin can take several days to fully harden in certain environments & situations.


  • In a round mixing cup, mix 2:1 ratio by weight or by volume (eg. 10 ml of hardener to 20 ml of resin).  Measuring Liquid Diamonds by weight is considered to be more accurate, but volume works well too. A simple kitchen scale will work for weighing purposes.

  • Always pour resin (part a) into hardener (part b), & stir well but gently, for 3 to 5 mintues, scraping the sides and bottom of cup. Stirring slowly helps to reduce & avoid air bubbles. It is very important that it is properly mixed. (Some people like to pour this mix into a new empty clean cup, then stir mixed resin for another 3 minutes to ensure it's thoroughly mixed.  Although we have not found that to be necessary.)  Instead of pouring into another cup, alternatively, we suggest you can let it stand in the initial mixed container for up to 5-10 minutes to degas & allow any bubbles to rise to the surface. If there are a few bubbles, a light pass over with a heat source will pop them. Suggested minimum per mix is at least 15 ml. Using plastic or silicone stirring tool also can help prevent bubbles (that a wood stir stick might add).

  • When pouring your resin into your application, try and pour as close to your pieces as possible.  Pour in a linear line, so that resin flows from the front of your piece, to the back.  These techniques help to avoid bubble entrapment.


  • To dome, glaze or make colour swirls in blanks, allow mixture to set several more minutes for a thicker honey-like consistency. This is a slow cure resin and it can take 45 mins to 1 hour to get that consistency. If your piece will be turned on a lathe, please wait 24 to 48 hours to turn.


Larger mixes will cure faster, and smaller mixes will cure slower.  If your mixed resin starts to get warm in your cup, apply to your application quicker and/or mix smaller batches at one time.  Warmer weather & temperature will accelerate cure and colder weather & temperature will slow the cure time. 


Be aware cure times will vary depending on mass and temperatures. Large castings will cure very quickly, where as small castings may take longer than normal to fully cure. 

Full cure at a 30 gram (2-3oz) mass is roughly 16-24 hours based on room temperature of 25°C / 78°F.  For small castings and thin coats, full cure is typically 24 hours.  Any sanding or polishing of cured piece should be done after fully cured 24-48 hours.

Always wipe around the bottle opening of the hardener when done so that a powdery substance does not form and drop particles into the bottle when opened again.

Please keep containers tightly sealed when not in use.  The hardener (part B) is extremely sensitive to moisture.  DO NOT allow hardener to remain open when not in use.


If you experience a sort of "film" on the surface of your cured piece, there could be a few reasons. Too much hardener could cause a film that resembles an oil slick. Make sure you are measuring accurately. Moisture or direct flame on uncured resin can also be the cause of a film.

*Important Note:  If you are adding colourants to your resin, the general rule of thumb is to start with about 3% colourant ratio to resin, and only add more if needed, (you can check opacity on your stir stick), but never exceeding 10% colourant to resin ratio.  Glitters are the exception to that ratio rule, since they don't colour the resin.

Note: adding anything in to epoxy resin, does effect the pot life (work time) of epoxy resins. However, just keep watch on any & all cups it's mixed in, if it's starting to warm up, it needs to be used ASAP.  If it's not used quickly, and an uncontrolled exothermic reaction has begun in the cup, it will overheat and get extremely hot in your cup.  When this occurs the resin will quickly yellow from burning, and will no longer be able to be used.  Epoxy resin heating out of control can foam, smoke, give off dangerous vapors and generate enough heat to melt it's container or cause nearby items to catch fire. If this occurs, , safely remove the overheating cup on to a fire-proof surface (a metal tray or concrete) outdoors. Once cooled, you can dispose of it. To avoid this issue, it is always advised to get your mixed resin on to the substrate as soon as possible.  When it's applied in correct amounts for the circumstances, it does not build heat, so the temperature through the thickness of epoxy stays close to the ambient temperature of the room.


Here are some tips for best results and to help with using Liquid Diamonds Casting Resin.

Changes in weather (temperature and humidity) can affect different results at different times of the year.  Often times we see that environmental conditions have caused different results for people.


Make sure the room stays fairly consistent in temperatures. Between 22 - 26°C /72 - 80°F is best. And it should stay this way throughout cure. 

Humidity plays an important role.  The room should be under 50% humidity ( better if it's under 30%).  If it is humid, get a dehumidifier or several containers of Damp Rid to put in the room.  


Different customers in different weather belts around the world experience different demold times.  Some areas find they can demold around 12 to 14 hours, however item won't be fully hard for about 24 hours.  Make sure to keep item on a very flat surface so as not to add wrinkles, marks or fingerprints.

Some customers state they require a full 24 hours, and can check at 18 hours, but prefer to wait the full 24 hours, to have a non bendy piece. Liquid Diamonds does take longer to cure (then ArtWorks Resin® for example), but the results of allowing it to cure thoroughly are worth the wait.

Bigger pieces like coasters will cure faster than smaller pieces.  Higher temperatures will decrease cure time, and colder rooms will make cure take much longer, or if too cold, incomplete. 


It's not fun to ruin a piece from demolding too quickly, so best to wait.  It takes time to figure out each persons perfect cure time, due to so many factors.  Environment, temperature, humidity, depth of pour, volume of pour, shape of mould, if colourants are used, and adding embellishments, especially organics (flowers, leaves etc).  Sphere shaped moulds hold the heat in more, so may need to be poured in shallower layers.

When adding glitters, it's best to wait until Liquid Diamonds gets to a honey like consistency before you add glitter or it will sink to the bottom of the layer your working on.  That can mean resin needs to sit about 45 minutes to an hour and a half depending on your environment, before adding the glitter.

Maximum depth, is a very tricky subject.  There is not one answer to this question that suits every project. It depends on many factors involved in said project.  Again, environment, temperature, humidity, volume of pour, shape of mould, colourants and any embellishments added. This is something that it takes time & experience to learn what is best in your environment. If it's a completely open surface area, you might be able to pour in 2" depths. We have heard people to successfully pour Liquid Diamonds in 6" depths without a pressure pot, however I do NOT recommend this due to chance of overheating and burning the resin. Leave those experiences to very experienced resin users. If there's added embellishments such as organics (flowers, etc), I would recommend starting with 1/2" maxiumum depth in open mold pours.  If you're using a mold that is rounded and more sphere shaped (which holds the heat in), and if adding organics, I would pour in 1/4" or so max depth layers. As you gain experience with the resin, you may find you can increase the depth.

Doming, is when you apply a thin layer of clear resin on the surface to restore the shine and smooth things out if needed. Although both Liquid Diamonds or ArtWorks Resin® can be used for doming, ArtWorks Resin® domes very nicely due to the thicker viscosity.

For buffing and polishing, you can use a wet/dry sandpaper (use it wet with a tiny amount of dish soap) in course grit, down to the finest grit you can get.  Then use a polishing compound to buff and shine the resin back to a glassy finish. There are many types of polishing compunds, but one example of a polish compound is called Blue Jewellers polish compound. Also have heard Fabulustre is good. Some people use vehicle headlight polish. Another one mentioned to give a lovely finish is a piano polish. Different users have different preferences.

Liquid Diamonds and ArtWorks Resin® are both hard curing resins.  If you're using a resin that can be dented with a fingernail, or softens with body heat or in a warmer temperature, it is not a hard curing resin.  Liquid Diamonds and ArtWorks Resin® are hard curing resins.  You can polish hard curing resins with a buffing wheel and a polishing compound.  Use a cotton buff and polishing compound appropriate for resins.  Get the buff spinning, and use it to pick up compound, then press onto the resin piece.  You can use a dremel tool or flex shaft for small projects like charms, but a large buff makes quick work of polishing something larger like a pyramid or coaster.  Keep the piece moving.  You don't want to buff any one area more than a couple of seconds at a time. You also do not want to press the piece into the buff.  Let the buff do the work; let it run over the resin piece or charm, but don't use too much pressure.  Go over the entire piece as needed.  When done clean with mild soap and water, to remove any polishing compound residue.

Yellowing of hardener in the bottle can happen for numerous reasons.  When unmixed it can be from UV inhibitors that are an added ingredient, as they are yellow in colour.  Yellowing of hardener also is caused by oxidation which happens to every brand.  The average shelf life is 6 months opened, and 12 months unopened. People do use epoxy past its shelf life, however not recommended with whites or clear.  When mixed, a yellowed hardener should go clear or pretty close to it.  If it's not as clear as you'd like, some people add a tiny drop of blue or violet tint to the mixed epoxy to trick the eye from seeing the yellow. 


Once cured all resins do eventually yellow over time, however some have UV added protection that help to prolong it. Both ArtWorks Resin® & Liquid Diamonds have UV protection added.  The other factors of course are exposure to sunlight.

Sometimes people see something on top of their finished cured piece like a film, often referred to as amine blush.  Without seeing it in person it is difficult for us to be sure. Some of the biggest culprits are using too much additional heat on the resin surface, or theres' too much humidity, or sometimes alcohol or some other contaminant.  Try not to torch Liquid Diamonds if possible.  Try not to use a heat gun.  Liquid Diamonds is so thin if overheated it can film.  If necessary, use a barbequie lighter and keep flame elevated above the resin a few inches to degas. Some people will set pieces on a vibrating surface to help rid of bubbles.

If you have never used a 2:1 resin, just remember to use twice the amount of resin as hardener.  

Check out our handy resin calculator page (there are 2 calculator options) on our partner's website, to get an estimate of how much total resin is needed for your project. Another way to see how much resin you may need, is to fill your mold with water, then dump it into a measuring cup.  Or use a measuring cup to fill your mold to see how much is used.  Then dry mold thoroughly as even a tiny bit of moisture will ruin the cure.

If resin appears cloudy,  & your mix is correct, it is likely too cold.  Keep your resin stored in temperature controlled room, and use when it is warm.  If your resin bottles are cold, the resin can not perform as well.  Some people will set the Part A bottle in warm water to warm resin up, or in front of a heater, or on a heating blanket. If you set in warm water, ensure you fully dry the container off, as any moisture dripping off bottle in to your mix can ruin it. 

Please note that bottles are filled by weight, not volume and will not be filled right to the top.

Liquid Diamonds Casting Resin Mixing amount examples:


To make:             Resin     Hardener


15ml (.50oz)         10ml      .5ml

30ml (1oz)            20ml      10ml

45ml (1.52oz)       30ml      15ml

60ml (2.02oz)      40ml      20ml

75ml (2.53oz)       50ml     25ml

90ml (3.04oz)      60ml      30ml

105ml (3.55oz)     70ml      35ml

120ml (4.05oz)     80ml     40ml

135ml (4.56oz)     90ml     45ml

150ml (5.07oz)    100ml     50ml

165ml (5.57oz)     110ml     55ml

180ml (6.08oz)     120ml    60ml


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