Siraya Tech Tenacious Clear Flexible 1kg + Fast ABS-Like Impact-Resistant Resin 1kg Review (2026)

Who this bundle is really for

This pairing suits resin printer owners who already understand basic exposure calibration and want to push past the brittleness of standard hobby resin without buying a specialty toughened formula outright. Siraya Tech's own guidance is to mix Tenacious into a base resin at roughly a 10 to 30 percent ratio by weight, with 20 percent commonly cited as a starting point, which means this bundle is really raw material for a DIY blend rather than a ready to pour tough resin. It fits hobbyists printing gears, moving joints, cosplay parts or other pieces that need to survive drops and flex without snapping. Beginners who want consistent results straight out of the bottle are better served by a single pre-mixed tough resin instead.

What Tenacious and Fast ABS-like each bring to the mix

Fast ABS-like is Siraya Tech's standard fast curing base resin, described by the manufacturer as offering a strong combination of stiffness and toughness with good fluidity for quicker prints and cleanup, and low odor during printing. Tenacious is a flexible, ABS-like resin the manufacturer positions as a fortifier rather than a standalone printing resin, meant to be blended into a base resin to cut down brittleness and raise impact resistance. Both resins cure under standard 405nm UV light and work on typical LCD and DLP resin printers. The manufacturer's published data for the Fast ABS-like base lists tensile stress at break around 31 MPa and elongation at break around 20 percent for the standard formula, figures that shift once Tenacious is blended in.

Mixing, printing and caring for the results

Getting good results starts with weighing both resins accurately rather than eyeballing ratios, since Siraya Tech's guidance is a specific percentage by weight rather than a rough splash. Best results are printed at 25 degrees Celsius or higher according to the manufacturer, so a warm workspace or a resin heater helps consistency, especially with the flexible component in the mix. Because this is a custom blend, exposure times from either resin's default profile will not automatically be correct, and users typically need to run test prints to dial in curing before committing to a full model. Standard resin printing safety practices apply throughout, including gloves, ventilation and following the manufacturer's cleaning and post cure instructions for both components.

How it compares with pre-blended tough resins

Against ready mixed alternatives like Elegoo's Tough resin or Anycubic's Tough Resin 2.0, this bundle trades convenience for control, since a pre-blended tough resin arrives with a known exposure profile while this bundle requires the user to find their own. Siraya Tech also sells Tenacious on its own for owners who already have a preferred base resin and only need the toughening additive, which is worth considering if you do not specifically want two full liters of Fast ABS-like. The upside of doing it yourself is flexibility, since the mix ratio can be tuned for a specific part rather than accepting a single fixed formulation.

Bottom line and who should buy differently

For resin printer owners comfortable with test prints and exposure tuning, this bundle is an economical way to build a durable, semi-flexible resin blend from two respected Siraya Tech formulas. Choose a pre-mixed tough resin like Elegoo's or Anycubic's instead if you want predictable results without the extra calibration step, particularly for a first attempt at printing impact resistant parts. Owners who only need the toughening effect and already have a base resin they like should look at Tenacious sold alone rather than buying a full liter of Fast ABS-like they may not need.

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