07-04-2020, 03:13 PM
A silly and absurdly over-engineered "solution" to a non-existent problem. This all to prevalent concern over the Mars' Z-Axis stability, and that of most LCD and DLP SLA printers, is nonsense driven by people with no knowledge of structural engineering--or just enough to be dangerous.
During operation the Mars' Z-Axis drive and platen are not subjected to any significant non-axial external loads. It is as originally designed and if properly aligned with the LCD screen quite capable of remaining as stable as is necessary under any normal operating load. What non-axial loads it does endure are not in the least comparable to those experienced by the Z-axis in a 3-axis FDM printer. In fact it seems to be comparisons to that technology that drive the meritless concerns over Z-Axis structures in SLA and DLP printers.
Apples and Oranges: The SLA printer Z-Axis does not have to be capable of rigidly resisting forces to which it will never be subjected.
I.e. "It ain't broke"and, ergo, does not need "fixing"..
During operation the Mars' Z-Axis drive and platen are not subjected to any significant non-axial external loads. It is as originally designed and if properly aligned with the LCD screen quite capable of remaining as stable as is necessary under any normal operating load. What non-axial loads it does endure are not in the least comparable to those experienced by the Z-axis in a 3-axis FDM printer. In fact it seems to be comparisons to that technology that drive the meritless concerns over Z-Axis structures in SLA and DLP printers.
Apples and Oranges: The SLA printer Z-Axis does not have to be capable of rigidly resisting forces to which it will never be subjected.
I.e. "It ain't broke"and, ergo, does not need "fixing"..