Post curing issues on High Temp resin

Support & Troubleshooting Form 2
1

Hello,
I am Peter. Few weeks ago I have got a Form2 print some parts with Clear resin and find it very nice! Now we need to print parts used under high temperature and have acquired the High Temp resin. I have some issues related to the post curing process for High Temp resins

1, I find that in the High Temp Resin datasheet, it seems that the resin is cured at 365nm wavelength UV radiation to achieve the best performance. However, in the post-curing documents (web pages) as well as features of the Form Cure, only 405nm wavelength is used. Is it OK to use the 405nm wavelength for post curing of High Temp Resin? If 405nm is applied, can I get the mechanical and thermal properties listed in the High Temp resin datasheet (datasheet version Rev 01 04.18.17)?

2, Another thing I noticed is the UV radiation power. In the datasheet for High Temp resin, 80.5 mw/cm^2 is used which is much higher than that of Clear resin (1.25mW/cm^2). Do I need to strictly follow the instructions and apply 80.5 mw/cm^2 for the High Temp resin?

Best regrads

2

I don’t have all the answers here but I can share my observations on the HT resin.

This was discussed a little when the form cure was announced and from what I remember the wavelength of the light wasn’t a big deal. Getting a full cure with reasonably high ambient temps were the main factors.

I have a part on my desk that was printed in HT resin and cured in a nail salon. It was installed on an exhaust (it’s a decorative tip). The part survived running on vehicle without issues even with a thin 1.2mm thickness. The part was clamped to a tailpipe with a steel hose clamp.

If you’re planning on running at the limits of the material expect some failures. If there is some head room to the max temp and load you’re probably fine.

3

Thank you very much, Fred.
I would try with 405nm wavelength and 80.5mw/cm^2 flux for curing of HT resin. Maybe post my further results here.