.svg){kind=small}
Somos Taurus
High impact strength SLA resin
Taurus is the resin we reach for when a part has to survive being used. It gets you thermal and mechanical properties that used to mean going to FDM or SLS, but with the surface finish and the accuracy of stereolithography — and in a charcoal grey that looks like a moulded production part rather than a prototype.
It builds large parts accurately, holds the same properties in X, Y and Z and cleans up easily. A high heat deflection temperature means it copes with more end-use applications than most resins.
- Tensile strength
- 47–49 MPa
- Heat deflection
- Up to 91°C
- Elongation
- 17–24%
- Colour
- Charcoal
Run it on your own machine?
Taurus resin, 10kg container — supplied to order
What it’s good at
High strength and genuinely durable, not just stiff
Heat tolerance up to around 90°C
Thermoplastic-like performance, look and feel
Excellent surface finish, isotropic in X, Y and Z
Large accurate parts, easy to finish and clean
Where we use it
Customised end-use parts, not just prototypes
Tough functional prototypes that get handled hard
Under-bonnet automotive parts
Functional testing for aerospace
Low volume connectors and housings for electronics
Not sure yet?
We’ll print you one in Taurus and one in PA12
Same geometry, two materials, so you can bend them, heat them and decide with the part in your hand. We do it all the time — it saves everybody a fortnight of arguing.
Ask for both →Technical data
Typical values from the Somos data sheet; each range runs from UV post-cure to UV plus thermal post-cure. Treat them as indicative — geometry, orientation and cure all move the numbers. We’ll test the real part if you need certainty.
Mechanical
- Tensile strength at yield (ASTM D638)
- 46.9–49.0 MPa
- Tensile modulus
- 2,206–2,310 MPa
- Elongation at break
- 17–24%
- Flexural strength (ASTM D790)
- 62.7–73.8 MPa
- Notched Izod impact
- 35.8–47.5 J/m
- Hardness
- 83 Shore D
Thermal & physical
- HDT at 0.46 MPa
- 62–91°C
- HDT at 1.81 MPa
- 50–73°C
- Density, liquid at 25°C
- ~1.13 g/cm³
- Colour
- Charcoal grey
- Water absorption
- Low
- Post-processing
- UV cure + finish
How we print it
- Machines
- Uniontech SLA
- Max part size, one piece
- 1,400 × 700 × 500 mm
- Layer thickness
- 0.05–0.15 mm
- Typical tolerance
- ±0.15 mm or ±0.15%
- Minimum wall
- 0.6 mm
- Finishes
- As-built, bead blast, painted
Parts we’ve printed in Taurus
Air duct for a hot engine bay
Ran a full test cycle at temperature without softening or warping out of tolerance.
300-off connector housings
Cheaper than a tool for the quantity and shipped as the finished product.
A 1.2m part in one piece
No bonded joints to explain to the customer and no seams to fill.
Questions about Taurus
Ask for the engineer who runs the SLA machines rather than a salesperson.
Talk it throughTaurus or PA12 nylon?
Taurus if the surface matters, if the part is big and needs to be one piece, or if it wants to look moulded. PA12 if it needs to flex, take a snap fit or come in at the lowest cost per part at volume.
Can it be painted or plated?
Yes. It sands and primes easily, plus it takes automotive paint well. We can vacuum metallise or chrome-effect it through our finishers. Plenty of customers leave it charcoal.
Is it UV stable outdoors?
Like most photopolymers it will change colour and get more brittle in sustained sunlight. For long-term outdoor use, paint it or move to nylon — we’ll say so at quote stage.
How quickly can you print one?
Small parts are usually two to three working days including cure and finishing. Tell us the date you need and we’ll tell you straight whether we can hit it.