FAQ

Frequently Asked Question Topics:

All Frequently Asked Question:

What are the appropiate exposure settings to use in the B9 Creator printer?

It has been brought to our attention that the exposure times we recommended here previously were too long for some B9 printers, causing the attachment of the layers to the PDMS non-stick surface. We have confirmed this through tests by users that were reporting this problem and have now altered the formulation slightly to accommodate for more powerful B9 projectors.

How is it that some B9 projectors, such as our model, will need longer exposure times by a factor 2 or 3? The best explanation that we can come up with is that some Vivitek projectors used for the B9 will have more effective UV filters that cut out more radiation between 385 and 425nm. This may not be perceptible to the naked eye, but a few % more absorption will affect the cure speed of our sensitive resins.

Our new B9 compatible formula will keep the same properties as the standard products, but will be slightly less reactive. It will cure as follows, for 50 microns (0.05mm) XY resolution:

Fast B9 projectors (configure these settings the first time you use our resins)
First layer exposure: 10 sec, 4 base layers
T-Base: 3 sec
T-Over: 4 sec

Slow B9 projectors (if the above settings cause delamination and/or faulty layers)
First layer exposure: 18 sec, 4 base layers
T-Base: 10 sec
T-Over: 10 sec

The B9 Creator allows for the creation of a material catalogue that holds print parameters related to each resin. These may vary slightly for each material and resolution setting (more accurately, the print area).

For 100 microns (0.1mm) XY resolution, multiply the values by 2, approximately

For 25 microns (0.025mm) XY resolution, divide the values by 2, approximately

What are the shipping conditions

You can read about our shipping conditions here.

Don’t you ship to my country?

We have encountered some difficulties for shipping to certain countries, regarding import taxes and regulations. Due to this and frequent requests of inclusion of certain destinations, we created this section to inform on Shipping Conditions and territories who have been tricky to give service to. If you don’t see your country in the shipping select box and want it added, or your destination appears in the list of countries with issues below, please contact us to see if we can arrange shipping for you.

You can read about our shipping conditions here.

Do your resins work with DLP projectors?

Yes they do! If your intention is to use our resins with standard, non-modified DLP projectors, you can use our high or medium reactivity ranges, depending on your optical power output, as they have been tested in such setups. By non-modified DLPs we mean that they still house all their UV and IR filters as well as the color wheel.

Can your resins be used to create RTV silicone molds?

Our Spot-HT resin has been tested to work for silicone molds.

The silicones that have been tested successfully are Tin-cure RTV silicones, such as  Silpak R1348, or Smooth-on Tin-Cure Silicone Rubber.  You can cure the silicone around the print without the need of a coating.

On the other hand, Platinum-cure resins are much more sensitive to trace amounts of catalyst inhibitors. We have had several reports that these silicones will not cure completely on the surface of untreated, fresh prints. We recommend post-curing the prints thoroughly with a low wavelength (365nm or less) UV oven and using a Polyviny Alcohol (PVA) release agent to cover every surface of the print that will come in contact with the Platinum catalyzed RTV rubber. Similar protective barriers are also available as acrylic varnishes. The PVA barriers can be dissolved with water but the acrylic ones are permanent.

Are there any Safety Data Sheets (MSDS) available?

Yes! You can access them, once you are a registered user, in our Technical Docs section.

Are your resins compatible with the B9 Creator or other DLP based 3D printers?

Yes, we have a standard pigmented version of some of our resins that work out of the box in DLP based 3D printers. See our shop section for further details.

What is the recommended ANSI Lumen output of a DLP projector for 3D printing?

DLP projector fabricators measure the optical output in different ways and this value is not to be taken as an exact figure. In general terms, the higher the Lumen output of the projector, the faster it will cure the resin. Common values range from 2000 to 3500 ANSI Lumen. This is related to the wattage of your UHP light bulb but will also be influenced by the quality of your filters and optics, as well as if your setup uses mirrors or light-guides to redirect the projected image.

What wavelengths do your resins work at?

Our standard resins use a mix of photoinitiators that work under UVB, UVA and visible blue light up until 425nm. It has been tested to work with unmodified DLP projectors, with the all filters and color wheel in place. It also works with 405nm Laser diodes and LEDs.

A secondary photoinitiator mix is testable by request working at a higher 450nm window, but a bit of UVA light comes in handy for accelerating the cure speed of this mix.

Can I use UV light to cure your resins?

Yes, all our resins work very well with UVA and UVB light sources. Specific wavelengths are available in our technical docs.

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