Tenacious Flexible 3D Printer Resin, Obsidian Black, 1kg | High Impact Resistant, Tough Engineering Photopolymer Resin, Flexible, 405nm UV-Curing, Ideal for LCD DLP 3D Printers

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.

This stuff is excellent. Mixed with my normal resin at 20% and results are almost plastic like in flexibility. Have to say this is a must have for resin printing.

This resin isn't rubbery. Let's get that out of the way first off. It's not like printing with NinjaFlex on an FDM printer. Parts that are made with this resin will deform, but it takes a little effort, and they go back into shape, but it takes a little time. They are more like soft plastic than rubber. But that deformation and give makes them incredibly strong and able to withstand heavy impacts. This would be a great material for outer casings or bumpers or tubes that needed to have some give to them. Resin from resins printers is often really brittle, and this can be added to some other resins to make them much more usable and less liable to break. You don't have to print with 100% Tenacious (although the items I've posted above are), as you can mix it in to add impact resistance to other resins -- and that's really where its primary value lies. Alone, it's a kind of whitish/clear resin that's not clear enough to be see through, but not opaque enough to be white. It's a bit soft, so it can scratch relatively easily. It doesn't yellow heavily, but it's more the colour of 'natural' PLA filament. It also has a kind of strange refractive colour that looks very blue to purple in daylight. I'm not sure what causes that, but it's interesting. Overall, though, I'm super pleased with this resin. It's a great addition to the arsenal of Siraya resins (Blu being the one I use most, followed by Sculpt and Tenacious in a head to head with both of them being more commonly used as additives to other resins for my stuff). It's a spectacular flexible resin for the price.

Wow! Incredible resin Paired with the siraya fep film I am getting cleaner looking, crisper prints with less warping Bang for your buck!

Very flexible, not as durable as I initially thought it would be. Prints well. Good price, recieved quickly

Great resin to mix into the cheaper abs to reduce breakage works well on my ELEGOO

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.

15% ratio with any ABS resin and you have yourself an amazing resin for miniatures. This product is amazing! Excellent quality and very fast shipping! Greatly recommended :)

Ottima resina gommosa. Quello che cercavo. Semplicemente spettacolare

je l'utilise pour renforcer pour les pièces de jeu la siraya navy grey, à hauteur de 10% . Mélange bien connu et très fiable, une base pour les amateurs de figurines de jeu

Muy buen producto la ocupo como aditivo para hacer más resistentes las resinas cotidianas una mezcla del 15% mejora muchísimo la resistencia de las resinas normales

I ordered this resin for its flexibility but I found that is not flexible. It is tough but with very low flexibility.

Quite possibly the worst resin I've ever used, so bad that I ended up pouring the remaining 85% of it in to a large vat & curing it all before disposing of responsibly. I was quite excited to give this resin a go & expected good things in the hope it'd be a cheaper replacement for the Phrozen RPG resin i currently use. Lots of vigorous shaking to make sure it was well mixed & in to the vat which raised its temperature to what is recommended. Spent a couple of hours calibrating the resin to my printer (Elegoo Saturn 4 16k Ultra) & then ran a set of prints through it which were duplicates to ones I currently hold in stock (Phrozen RPG). Washed & cured the finished prints which had a glossy finish to them, almost translucent at the thinner parts, the detail was ok but nothing compared to what you get using Phrozen RPG resin. There's hardly any "flex" in the cured resin but probably just about enough to prevent easy snapping points of limbs. When I cleaned out the vat I found thick congealed resin as I poured it back in to the bottle, had almost runny jelly consistency to it along with some very thin cured strips. A very odd experience with this resin throughout , I wont be wasting my valuable time or money with it again. I gave it two stars as it did print to an ok-ish standard but certainly not of a good enough standard to sell via Etsy etc... I've added four images, two are using Tenacious & the other two are printed using Phrozen RPG.