That’s the thing about Open Mode, it doesn’t provide any predefined profiles, It’s up top you to do so.
An interesting thought there Dudemeister. Of course the selection of “material” in Preform does set an exposure / speed/power of laser profile. That directly controls the cure characteristics of the resin being used.
“Open” mode on the Form 2 is not really a true open mode as it does not allow the user much control over exposure variables such as time and power of the exposure (the amount of UV energy being applied per unit of the uncured resin) (Unlike in your Photon or the Form1, where you can control / set the variables)
“Open” mode simply disables several of the Form 2 features to allow a user to pour resin into the build tray. It also introduces a rather undesirable feature of a delay being forced when it calculates (rather than measures) that 100ml of resin should have been used. This often causes lines in a print and those lines can be a weak point in the print. The impact of the delay is proportionate to how quickly the user presses “resume”
Its hard to understand or conclude why a similar system could not be implemented TODAY on the Form 3, other than its not desired by Formlabs as potentially it removes a source of revenue from them (resin sales / consumable sales)
I guess that the current position of NO OPEN MODE on a Form3 is a position driven by commercial reasons rather than technical reasons.
My prediction is that after a period of time “Open” mode may become available on the Form3, but its anyone’s guess as to exactly when. My thoughts are that the timing of such a release will probably coincide with a slowing down of sales / orders and will in effect be used as a sales tool to increase sales at a quiet point (if the option of open mode ever happens at all…)