This is interesting news… Must be a breakthrough with chemistry, because there is only so much UV light available… and normal chemistry makes the resin too hot if it is printed too fast. Or perhaps they cool the resin so they can hit it with higher power UV?
100mm/hr is fast but it’s only really starting to get into the range where heat production might be an issue. A number of people other than Carbon3D have exceeded 100mm/hr with top-down printers, for example.
good to know. I am only now building my first SLA printer, so speed is not something I have studied. I just took the article at face value and thought it must really be a breakthrough. Bummer…
Now there’s a thought: use an aluminium tank and chill it to keep the temps down.
I think the hardening process is exothermic in itself, so chilling the resin would make it need a longer exposure to trigger the reaction. But then I’m only a newbie, so I could be full of sh*t.
Chilling is bad because it raises the viscosity, which produces suction issues to remove the fresh layer from the vat surface without breaking it. Most resin tanks are warmed to a constant temperature somewhat above room temp, and then the printer’s resin and exposure is tuned for that specific temperature.
Fair enough. Thanks for the info.
I’m planning on building my own SLA printer and you’ve saved me making a mistake.