Quote from mikej on June 5, 2014, 01:43
I do always see that when cured in oven it becomes hard enough to hold it's form even after some hour. All other time is just to finish cure. I'd said that 1-2 hours is more than enough for already semi-cured semi-hard PDMS.
As per natural cure under room temperature - never tried it. But AFAIK 24 hours *should* be enough for normal full curing. Based on this I suppose that even 5-10 hours of natural cure *could* be enough to grab it for the 1-hour finish cure in the oven. Thus most likely use case for this hybrid scenario is:
1) In the evening mix PDMS, pour it in the VAT
2) Leave overnight LEVELED
3) Finish cure in the morning throwing it in oven for the time of breakfast
5) PROFIT! :)
I'm gone try it when I'll order some new vat's from acrylic shop. After some nights of thinking about it, it looks to me like very good method with huge benefits.