Siraya Tech Tenacious 3D Printer Flexible 405nm UV-Curing Resin with High Impact Resistance Standard Photopolymer Resin for LCD DLP 3D Printing and 8K Capable (1kg, Obsidian Black)

Pretty good resin. Mixed with anycubic tough resin at 75 tough to 25 Siraya and it produced nice parts for a custom figure. Parts flexed well and were very resistant to cracking or breaking, although there is a point where they will.I tried a 100% part and it came out nicely. Very flexible and is tough.If you mix it you should get a decent life out of a bottle, making it more of a value in the long run.

Printed quick and easily on my Saturn S4 U, and had a nice flexibility to it when cured at room temp, but when cured in 60C water the hardness increases, and barely has any flex to it. It has a nice rigidity with enough elasticity which seems like it will resist shatter when under stress. Feels like it rivals Siraya Tech's Blu Nylon Black when it's been heat cured, which could make it a good value alternative. Has a nice transparent smoky blueish purple color.

Okay I have a Saturn 4 Ultra. The reality for me is that when I calibrate I find that my build plate has hot spots and cold spots. What I mean by that is that this device self levels and even with that, with most other resins I can see a difference depending on where the model is printed on the plate. The difference is small but it is there. Not with this resin. Yes I have a tank heater as well. This resin behaved exactly the same all across the plate and I dialed in and printed the miniatures above.What I noticed is that quality was "good" but not perfect. The Elegoo 8k resin has a better detail by a small amount BUT in my case the flail kept breaking. We may be a bit rough with the mini's as when we are done we just put them all together in a small box. Just doing that broke the flail multiple times.What I noticed is that before I could probably bend that flail around 10 degrees before it would break. Granted I never tried but this is my estimate as I could feel it about to break. With this resin? I was about 25 to 30 degrees before I felt it was pushing it. For me that is huge.Now as others have said, you don't mix this resin as it is already mixed. This is the grey resin and not the clear tough resin.If this resin was say 25% cheaper, this probably would be my main resin as I main print miniatures. Because it is so expensive, it will only be used in rare situations or mini's that we use a lot.

This resin is xlnt and prints beautifully with the correct settings. One thing to note is this resin needs to be used at least 26Deg Celsius for best results. At first I tried it and room temperature was 22 deg and I got bad cracks and layer separation. Then I bought a resin printer heater and set it to 27 deg c and let the resin in the vat and the printer warm up for 30 minutes then printed and then everything was perfect with no setting changed beside the temperature. Strong with a little bit of flex. Odor is I would say medium compared to others, It's not odorless but also not strong as well. So I would say medium-low odor compared to other resins so all in all very good. Sirayas stock settings work well on the MONO M7.

Not the easiest resin to print with but it is nice to have around. I needed it for it's unique hardness qualities and though it's didn't prove to be as flexible as I had hoped, it was still the most flexible resin I had ever used within the cheapest options I had to choose from. I'm not planning on buying this item again, but if a situation arises I know that I can still trust it to print without too much headache.

It wasn't obvious to me that the Easy Grey Tenacious has different properties and cure times than the other Tenacious colors, because they're all sold under the name "Tenacious." I wish it were stated clearly, because I wasted quite a bit of resin trying to troubleshoot. I had read so many reviews about people mixing Siraya's Tenacious with their Fast resin (or other brand resins), so I was confused that adding Tenacious Easy Grey to my Fast resin didn't make any difference in durability. I decided to try printing with just the Easy Grey (not mixing it with any other resin) and followed the curing guide for Tenacious on Siraya's site... which says to cure Tenacious prints for 25 minutes (!). That seemed crazy to me, but I prefer to test manufacturer guidelines before experimenting. There was no alternative cure time for the Easy Grey. Unsurprisingly, the prints were extremely brittle and broke with the tiniest bit of pressure. I E-mailed Siraya about it and they said:"First, Tenacious Easy Grey is not exactly the same as Tenacious Clear. It is easier to print and has excellent flexibility compared to standard model resins. But it is not more flexible and stronger than Tenacious Clear.Second, Tenacious Easy Grey is engineered for high impact resistance, ensuring models are both flexible and durable, so you don't need to mix it with Fast Grey because it has better mechanical properties.For the issue you mentioned, you can try to reduce the curing time to 10 minutes because the smaller model requires less curing time. If the curing time is too long, it will get hard."I don't understand why Siraya doesn't clearly outline the different properties and cure times between the different Tenacious colors. Or just market the Easy Grey as its own line. It would be very easy for them to clarify it up front, and it would save their customers money and frustration.

It works as stated, as long as you pay attention to the print parameters specific to your printer. However, if you're aiming for a black-toned finish, I wouldn’t recommend this material—it tends to reflect a bluish tint depending on the print thickness.

Recommended to me by several knowledgeable YT hobbyists and other word of mouth acquaintances who said I should try it out; my experience so far has been fantastic.