Matt Stultz Shares Advances in 3D Printing Materials, from hackaday:
First up from AS220 is [Matt Stultz] who has been experimenting with filaments other than the usual ABS and PLA. He gave a talk at the 3D Printing stage where he introduced the crowd to High Impact Polystyrene (HIPS), an amazing filament that produces unimaginably smooth objects, but can also be dissolved away with Limonene. This allows [Matt] to create objects with incredible overhangs with direct-off-the-printer mechanical builds such as gear trains and transmissions possible in the future.
If you’re running a 1.75 mm extruder, I highly suggest you pick up a spool of HIPS from Filaco just to play around with. It has the same dissolvable support qualities of PVA, but it also produces wonderful prints to boot. If the people running Filaco read this, I highly suggest you make some 3 mm spools of HIPS because somewhere around half the market has 3mm hot ends.
Along with HIPS, [Matt] also showed off two interesting filaments you need to feel to believe. The first is Laywood, a type of PLA embedded with wood fibers. It doesn’t exactly feel like wood, more like a big chunk of MDF that someone had taken a rasp to.
Laybrick, the PLA infused with chalk dust to emulate a stone texture, also made a showing at [Matt]‘s table. It feels a little like a very fine-grained sandstone, but isn’t cool to the touch as a normal stone should be. With a greater infill, [Matt] should be able to come up with something that really does feel like a natural material.
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