Trouble printing Resione F69 on Photon Mono X 6K

I’m fairly new to the exciting world of SLA resin printing. I’ve had great success working with the basic resins (like the AnyCubic Basic Clear) achieving predictable, consistent, and accurate fine detail objects. I have one design I’m working to date that incorporates a flexible strap similar to a downhill ski boot ratchet toothed strap. The accompanying components in the assembly are printed in my trusty basic resin, but for obvious reasons the strap demands a lower durometer material; hence, the choice to go with the Resione brand product.

The first notable anomaly is exhibited by the printer during the retraction translation of the z-axis driving the build plate to the home position. When the build plate contacts the resin surface a distinct groaning sound can be heard as the z-axis motor attempts to maintain the set point velocity. It sounds like the drive electronics have exceeded the machine’s torque limit (audible slip angle of the Electrically Commutated Motor). No errors are displayed and the printer proceeds to run the print job. Have a listen to the sound bite I recorded of the groaning I described. Each retraction cycle thereafter that translates the build plate submersing the resin, a groaning noise can be heard. On the attached sound bite, I captured 2 retraction cycles.

Several observable errors resulted notably FEP adhesion, fractures, voids, and tearing of the object. It seems to me that the registration of the z-axis encoder may be affected thereby producing the observable print object errors. Not sure if its possible, but under normal circumstances if the encoder telemetry is inconsistent with the physical machine component position (the build plate position in this case), then I’d expect some fairly funky results.

Is there anyone in the group that has either had a positive experience with the Resione resin, or conversely experienced similar behavior that I’m describing. My printer continues to produce excellent prints using the standard basic resin, so thankfully no catastrophic damage was done to the printer.