Cast 3D Printer Resin Easier to Burn and Print Clean Burnout Great Smooth Surface High Resolution Castable 405nm UV-Curing Resin for Thicker Designs and Metal Parts (True Blue, 500g)

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.

This stuff prints pretty well. Burns out really well. Just takes a bit more of a ramp than traditional polycast.

UPDATE: 8/3 - I've gone through 4 bottles since I first used it. I've used Blue, Purple, and I've also mixed them together! The mixture always comes out well, and the blue is a bit more difficult to achieve at first. I have since used mostly a centrifugal for my purple and always get excellent casts, I still do have slight trouble with vacuum casting however. Overall, I say this is the best resin for the cost. Okay, so I use Siraya Tech solely for casting. Now Purple is 50/50, as in sometimes I get a good cast and sometimes I don't. I feel like I have to raise cost on some products due to how much I waste attempting them. The prints for Purple always come out glorious, I've never had issues with the prints themselves. So it's definitely a burnout or curing error on my part. Purple doesn't work well for me on pieces larger then 3", I only use Vacuum Casting and may try Centrifugal next for it. Overall Purple is fine if you are patient and do it correctly! Now here comes Blue.... I haven't had ANY good prints so far..... annnny..... I've had a meh thin ring just to try and see if I could profit something off of this (It was 1 of 10 that survived). I've printed at least a dozen batches adjusting settings differently each time, sometimes drastic others slightly. I've used their recommended settings (which is the same as Purple) and still got nothing. My house's room temp is 75, so it's warm enough I feel like since Purple will still print beautiful. I will keep searching for a good setup and change the review once I have. Good Luck!

Great for casting

I purchased this to make my girlfriends engagement ring, and it printed well took a little bit to dial it in, but I ended up with a great print that I was able to give to the ring maker to cast and the ring turned out amazing, she loved it. The curing process after you print can be a bit much to make sure it cures evenly. The resin it's self stains so make sure to put protection on. You can use isopropyl to clean it easily tho. It is a good price for the quality you get tho. Most of these castable resins can run a pretty penny. The print after curing will be brittle so keep that in mind.

Excelente producto

Once exposure is tuned, this resin is great and preserves very fine details. I haven't done a burn out yet, but intend to do so in the very near future. I started with the recommended settings on Siraya Tech's website and had to do very minimal tuning to get a darn near perfect print with it. The instructions say to minimize exposure to alcohol and to cure it in glycerine to keep moisture out of it but I did not have glycerine and cured it using my normal routine and it came out perfect. This may affect the burnout, but I'll update once I've had a chance to test it. The resin is very viscous compared to Siraya Tech Build which is my normal go-to resin. Make sure you're within the recommended temperature range once you start printing. I have some Cast True Blue coming as well and will update there as soon as I get a chance to use it. This resin costs quite a bit more than the standard offerings form Siraya Tech which makes me feel like I need to be a little more conservative with it. Availability has also been unpredictable so if this is something that you're going to consider adding to your manufacturing workflow, be aware that supplies may be inconsistent. Otherwise, great resin for its intended purpose so far! Will update after burnout / casting.

I would love to give this product a proper review. Unfortunately, every time I try to review the true blue, I get brought to the purple, and the purple is JUNK. Unfortunately, until that glitch is fixed, this will have to be my review. Sad too, because the true blue is flipping amazing, and is hands down THE BEST casting wax I have tried so far. Glitches like this are bad for product demonstration. I have glorious pictures of what the true blue can produce, but will not have them applied to that terrible purple mess.