We offer an SLA resin 3D printing service in Crouch End, north London. SLA printing is capable of building extremely fine detailing. Most FDM and SLS 3D printers print at 0.1mm layer heights, our SLA printers print as low as 0.07mm.
The surface finish is the smoothest of all 3D printing technologies, it most closely mimics injection moulded products therefore it’s the closest thing to the finished product. It’s ideal for producing silicone moulds largely because the surface is smooth. Our resin doesn’t inhibit the curing of most tin and platinum-based casting silicones so its suitable for most moulding applications.
Microworkshops SLA resin 3D printing service, can offer quick turnaround times (1or 3 working days) and were competitively priced.
First patented in 1986, by Chuck Hall. Sterelithography machines use an ultra-violet light. They build models by changing liquid resin solid, as well as, photopolymerization. This process is repeated layer by layer until the solid model is complete. This forms each layer. Furthermore, highly intricate detail, can be achieved in a short space of time. There are two types of SLA printers: bottom-up and top-down. In our case we use DLP/MSLA 3D printers which are not technically the same as SLA printer, but for all intent and purposes they are the same. MSLA/DLP printers use a LCD screen to project the 405nm lights rather than UV lasers used by SLA machines.
Additional UV curing is required to process the freshly printed part into its final form. The extra exposure to light increases the strength of the molecular bonds made and forms new ones. day light also cures prints but we use curing light to control its strength & stiffness more accurately.
Support structures are printed to suspend the print in place, without adequate support the print will fail to build. These leave small uneven surfaces where the supports contact the print, so extra care is needed to remove and sand off markings.
SLA printing provides the smoothest surfaces of all 3d printing. Layer lines are virtually invisible to the naked eye, however layers thicker than 0.07mm benefit from a high grit wet sand to give it a perfect super smooth polish surface.
SLA printed parts are made in vat or ‘pool’ of liquid, when they emerge from the machine they’re covered in sticky viscous resin. Cleaning this resin takes the strongest alcohol solution, it’s not nice to work with were here to take the headache for you.
SLA resin is considered the gold standard of 3d printing technologies. Its preforms particularly well for small detailed objects, its also the printing of choice when creating patterns for silicone moulding applications.
There are pros and cons to all types of 3d printing. SLA has many great things going for it but its not what you need 100% of the time. For example if you’re not bothered by the surface finish then PLA may be more suitable as its cheaper.
Part orientation defines where the supports will be placed which makes it a important factor for the final finish. Usually if there are any surfaces that have a tight fit with another part, it is important to orient the part so no supports are located in these mating areas, otherwise the marks left by the supports could interrupt the tolerance of the fitting. If the print is purely for show, or ‘cosmetic’ then the part should be orientated so that the most visible surfaces do not need supports.
In theory if all the supports have been removed and it’s printed at the finest layer height setting then there should be no visual difference whatever orientation your part is printed. In general, we pick the orientation of prints however if you need a specific orientation, let us know when you send the file and we’ll certainly oblige.
Viscosity: 250-550 MPa*s
Absorption band: 385nm-410nm(wavelength)
Desity: 1.05-1.13 g/cm3
Flexural Modulus: 966 MPa
Flexural Strength: 46.6 MPa
Thermal Deformation Temperature HDT: 70 degrees C
Volume Shrinkage: 0.2-0.7%
Tensile Strength: 39.13 MPa
Tensile Modulus: 497 MPa
Shore Hardness: 85D