







🔥 Cast your vision in vivid Royal Blue — precision that shines!
Siraya Tech Cast Royal Blue is a 1kg high-resolution 405nm UV-curing castable resin designed for jewelry and metal parts. It offers an optimal balance of easy burnout with minimal ash residue, superior print adhesion, and a distinctive royal blue color that enhances detail inspection. Suitable for LCD, DLP, and SLA printers, it delivers professional-grade precision and smooth finishes, making it ideal for both beginners and experts in 3D printing castables.


































| ASIN | B0DHVGNL4H |
| Batteries Required? | No |
| Batteries included? | No |
| Best Sellers Rank | 5,011 in Business, Industry & Science ( See Top 100 in Business, Industry & Science ) 32 in Liquid 3D Printing Materials |
| Colour | Royal Blue 1000g |
| Customer Reviews | 4.4 4.4 out of 5 stars (792) |
| Date First Available | 25 Nov. 2024 |
| Item Weight | 1 kg |
| Item model number | Cast Royal Blue 1kg |
| Manufacturer | Siraya Tech |
| Part number | Cast Royal Blue |
| Product Dimensions | 10 x 10 x 21 cm; 1 kg |
S**R
Perfect casts from this
Great resin for casting, prints well, inexpensive compared with others but does need curing.
M**E
Past Use-By Date
Item arrived with a use-by date that was three months expired. 9
W**N
printing is hit or miss
Burns out better than the purple. When you can get the stuff to print. tried everything with the last 2 bottles,
R**L
Bad burnout
Prints ok , does not burn out fully, so effectively useless
D**D
ROYAL BLUE AND CAST BLUE ARE TRULY AMAZING STUFF
Been using Cast Blue for a good long year, works incredibly well. Honestly one of the best castable resins i've worked with, and it requires nothing special for treating other the making sure to clean it very well with only fresh IPA, even works great with rapid 5-6 hour burnout schedules :) Royal Blue is likewise a very good resin, the main difference been that it requires you to do the mandatory glycerine cure that Cast Purple uses too, or you'll not get a perfect finish. I actually prefer this one, as Cast Blue is a little brittle and harder to work with the extreme things I make (not usual peoples stuff lol) I reccomend it heartily, if you get stuck at all, do not be afraid to reach out to Siraya Tech directly through their email, they're really understanding and will help you out if you're patient and listen to them.
W**E
le meilleur
J**A
Après test de coulée en bronze et argent, idem qu'avec une grande marque. Résultat parfait. La différence c est que la grande marque ne sent pas la Siraya Sent assez fort. Bien aérer. Et alors plus dur bien enlever les supports après nettoyage et avant UV. Maintenant 3 à 10 fois moins chère qu'une resine vendue chez fournisseur bijouterie, à vous de voir
B**N
UPDATE 11/2/22: I work with this resin exclusively, and since I have so much experience with it, I figure that I’ll do updates for those of you who are just trying it or are having difficulties. This update is just to tell you guys about a successful experiment I tried. I was running low on blue, so I tried mixing blue and purple together and it honestly printed better than either one by themselves. I did about a 50/50 mixture, let it get fairly hot from sitting in super hot water from the sink for about 10 minutes. I don’t know if this is necessary, but I shook the F&$K out of it just to be sure. The resulting prints are shockingly good, I think that the addition of the purple give the pieces more rigidity, while the blue ensures cleaner models and supports. I haven’t done a cast with it yet, but I’ll let you know how it burns out. If that goes well, I will definitely be doing this from now on UPDATE 10/17/22: If you are about to hit that “buy now” button on the purple, STOP, get the blue… you’ll thank me later. Literally everything about the blue is light-years better than the purple. I went through an entire kg of purple without ever getting anything I was truly happy with (see below for old review). I was never able to achieve prints that didn’t have big build ups of unwanted resin, the post processing was ridiculous, and even after cleaning the models THOROUGHLY, I still wouldn’t get consistently clean burn outs. The Blue has none of those issues. Haven’t had a single build up around supports, the supports break cleanly from the models, post processing is easy and much faster, and best of all, the burnout is clean. The only downside of the blue is that the models are VERY fragile before post curing, so you have to be super careful. I have heard you might be able to get away without post curing at all, but I would recommend it for the simple fact that it strengthens the models significantly. If Blue is in stock, spend the extra money. I am maybe 1/3 of the way through a 500g bottle and I have achieved more usable prints than with an entire kg of the purple. OLD REVIEW OF PURPLE: I go back and forth with this resin, there are things that I like and things that I really don’t like. For the price, this stuff is good. Not great, good. If you do everything right (I’ll come back to this) you’ll get pretty good resolution, it’ll be easy to sand/finish, and you’ll have a clean burnout. But, in order for all of that to be achieved, you really have to follow these rules. First, and probably the most frustrating, is finding the proper settings. I found it really difficult to get my settings correct and I wasted a lot of time and resin doing so. I use a Mars 3 and my settings are as follows (I hope this helps someone): Layer size: 0.05micron Bottom layer count: 5 Exposure time: 5.5 Bottom exposure time: 100.00 Choose “light off delay” under the “waiting mode during printing” drop box and do: Light off delay: 2.000 Bottom light off delay: 5.000 Bottom lift speed: 50 Lifting speed: 50 Bottom retract speed: 100 Retract speed: 100 These settings have worked, but I still get a lot of resin build up around my supports which is a nightmare to clean up, if it doesn’t completely ruin the piece. These are also not the only settings I have ever tried, I have experimented with just about every reasonable combination and I haven’t been able to achieve clean prints without any globs of resin around the supports. So here’s a tip: try to position your piece and supports somewhere that will be easy to clean and won’t be the end of the world if not perfect. BE SURE TO PRINT AT 25-30°C or else you will have many failed prints! Next, you have to clean the pieces in a very specific way. No more than 30sec submersed in IPA, they recommend only using a paint brush to remove excess, and then immediately run under hot water for 30sec and then cold water for 30sec. This process has to be repeated until clean, and I find myself doing at least 6-7 cycles of this. It’s honestly pretty annoying. Next, post curing must be done in some sort of liquid with a similar refractive index as water, but NOT water, the resin is porous and the absorbed water can ruin your cast . They recommend using vegetable glycerin, but I had mineral oil on hand and it seems to work fine (more work to clean up so I’d recommend VG if you are going to buy something). You have to do this because the resin won’t cure in air, believe me, I have tried. You have to cure for at least 30 minutes, but I find myself having to cure for 1-1.5 hours, which is ridiculously long. Once it’s done curing, clean it off and be sure to dry it right away as to not let it absorb too much water. Be sure to have your burnout temp reach 1350°F and hold for 2-4 hours. Annnnd it’s just that simple! But seriously, this stuff is finicky and hard to get right, I’m almost done with a full kg and I’m still not completely happy with the results, but it works well enough if you are careful and methodical.
O**O
De muy buena calidad volvería a comprar
U**A
Resina facile da stampare, liquida e ben definita, si pulisce bene, molto veloce nella procedura degli u.v. Fatta una fusione in argento con ottimi risultati, superfici senza residui.... Conclusione la ricomprerò perché molto più economica da quello che offre il mercato e risultati eccellenti...
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