The issue tends to arise when a particular resin is about to run out and we want to switch materials. While I understand that some materials require a separate tank or even a separate ecosystem, for resins within the same family, such as White V5, Grey V5, and Black V5, we would prefer to use the same tank because it is more cost-effective.
We would want to finish the resin in the tank as much possible before switching to a different one but the printer refuses to start and instead, it throws Error 1.9.6 (Not enough resin to finish print) and Error 1.9.22(Cartridge is empty) even when there is around 200 ml of resin remaining in the tank, and the next print requires only about 50 ml.
From an operational standpoint, this creates a cost inefficiency. At a local price of about $127 per bottle, the unusable 200 ml translates to roughly $25.4 per cycle. When running a business, this loss has to be absorbed or passed on to customers, which makes pricing less competitive and introduces a recurring overhead that is difficult to justify.
It may be worth considering a user-controlled override option for the low-resin warning around the 200 ml threshold. That would allow operators to decide for themselves whether to proceed with a print based on their own risk assessment. If a print fails due to insufficient resin, the responsibility would rest with the user, but it would provide greater flexibility in managing material utilization.