This printer made by the new brand TwoTrees is EXTREMELY well made. We haven't seen anything like it yet coming out of China. With all metal construction, twin cooling fans, linear motion rails, and (best of all) CoreXY kinematics, this printer is way ahead of the Ender 3, but costs about 2X as much, so the question remains is it worth it? Here are a couple of listings for the printer with good prices. These are not affiliate links. I don't care if you buy it here or not. Apparently these are the Manufacturer's direct sales pages (hence the good price): Aibaba wholesale online store: http:t.cn/EXx41G8 Aliexpress retail store: http://t.cn/EXxbsTo ... https://www.youtube.com/watch?v=MiJd4QdRG0s

We all know that SLS is the big leagues, because the parts are isotropic, but the one thing which FDM/FFF printing can do which SLS can't is Multi-Material printing. Well, researchers at Columbia University's Creative Machines Lab have come up with a way. Of course this new technique will have it's own host of issues. Most obvious is keeping the print from sticking to the glass. If you read the scientific paper and can't understand the technique just think about combining SLS with SLA. The laser shines from underneath through a glass bed and fuses the powered plastic particles together. Then another glass with a different powdered plastic slides in and that plastic get's hit with the laser thus creating a single layer with two different materials. Great idea! Execution is everything. Science Direct Published Paper: https://www.sciencedirect.com/science/article/pii/S2214860420308125?via%3Dihub Stratasys SLS printing Video: https://www.youtube.com/watch?v=yiUUZxp7bLQ Video Of the prototype Machine from Columbia Engineering: https://www.youtube.com/watch?v=bTYZ--fnXoo&feature=emb_logo ... https://www.youtube.com/watch?v=Zwi0Us4nmRE