On 6/3/20 2:25 AM, Gene Heskett wrote:
> That sounds like a heated enclosure might be worthwhile, keeping it warm > enough to stress relieve? That completely obvious idea is locked up in a patent held by Stratasys, that should have already expired, but their lawyers used the trick developed by pharmaceutical company lawyers to extend the life of a patent. > How does that compare to PLA for the expendables $? PLA and ABS filament are around US$15 per kg. Commodity resin goo costs around US$30 per kg, so it's twice as expensive but the prices are slowly falling. With more volume, it'll probably reach price parity with filament. The cost isn't prohibitive when printing a few small resin parts for your own use. The small build platform, essentially a cell phone display, is the limiting factor for making structural parts, but there are some tablet sized LCD UV printers entering the low cost market. If there's a faster and less messy finishing process, resin printing will probably displace filament printing in a few years for many common applications. I've been thinking about getting one of the larger format (300mm X 300mm X 400mm) filament printers, but I want a direct extruder rather than the Bowden style, and maybe I should wait for that bogus Stratasys patent to expire so I can print dimensionally stable ABS. My first task this morning was to pull the ABS part off my 3D printer, make some measurements, revise the CAD drawing and reprint the part to get the critical dimensions I want. Compensating for nonlinear ABS shrinkage is a pain that the slicer should do for me, but apparently doesn't. _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
