dave wrote: > > > I like the inverted approach. > > More to the point what is the absorbtion max wavelength for the polymer? > In more specific terms what wavelength gives the best polymerization? > Curious minds want to know. ;-) > > To put in simpler terms what emission source is likely to maximize > polymerization? > Due to the availability of the DLP projectors, these guys went to a lot of trouble to come up with visible-sensitive photoinitiators. They work around 280 - 420 nm, with good sensitivity at 405 nm, which a DLP projector will pass, and the lamps have a little peak at 405 from the Hg in them. If you can get illumination at 385 nm, there are more initiators available. Fernando in Spain has a business supplying resin systems at excellent prices, I'm pretty sure he is the resin supplier to the b9creator project, and a number of other people on the group are also using his resin. Fernando has a web site with a list of the resins he has for sale, he has a variety of physical properties as well as light sensitivities available. He has a link on the diy3d group.
With 8 seconds/layer exposure, I think the optical part is well in hand. Jon ------------------------------------------------------------------------------ Live Security Virtual Conference Exclusive live event will cover all the ways today's security and threat landscape has changed and how IT managers can respond. Discussions will include endpoint security, mobile security and the latest in malware threats. http://www.accelacomm.com/jaw/sfrnl04242012/114/50122263/ _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
