by Chris Anjel | Oct 25, 2026 | MJF & SLS Operations
Under 3D Printing Professor’s Sinterit Lisa review, a viewer got tangled up in the math. If you mix used powder with fresh, what happens to the leftovers from that mix? Another viewer put it plainly: how many times can you refresh used powder before you have to...
by Chris Anjel | Oct 25, 2026 | MJF & SLS Operations
Under Mathews Engineering’s JLCPCB test video, one viewer vented about a marketplace order. After two weeks, he heard the printer wasn’t big enough for his part. The parts got sliced in half, and then broke before they shipped. His question: is there any...
by Chris Anjel | Oct 25, 2026 | MJF & SLS Operations
Under Formlabs’ “SLS Powders Explained,” a viewer asked, “Is it possible to make the particles smaller so you can get higher detail and the parts don’t look like sandcastles?” One reply blamed the laser. Another said the sandy look...
by Chris Anjel | Oct 25, 2026 | MJF & SLS Operations
Under Streamline-3D’s short demo of its shot peen finish on MJF parts, a viewer asked the obvious follow-up: “What plastic media are you using? Size and type?” Nobody answered. It’s a good question, because MJF shot peening only works if the...
by Chris Anjel | Oct 24, 2026 | MJF & SLS Operations
Under Protolabs’ video comparing SLS and MJF finishes, a viewer asked whether the standard finish comes from shot blasting after unpacking, or whether it’s just the surface left once the powder is brushed away. The answer depends on whose...
by Chris Anjel | Oct 24, 2026 | MJF & SLS Operations
Under Tested’s Fuse 1 demo, a viewer asked whether the powder falls under the microbead ban. He quoted a definition of microbeads as manufactured solid plastic particles smaller than one millimeter. It’s a fair question. Formlabs itself classifies...
