For the last several years, I’ve been working off the weight gained and fitness lost from a decade of grad school, post-doctoral research, job hunting, and, ultimately, launching my own company. The gym, to put it mildly, had not been a priority. Running and weight training went a long way towards getting me back to where I wanted to be, but I had hit a plateau. Every spring and summer I’d make incremental improvements, every winter, I’d fall back into old habits. It was a sustainable situation, but not fantastic.
Last summer, I set a goal for myself. While the weather was just on the wrong side of that threshold that makes running something I’m willing to do first thing in the morning, I would instead swap out my sneakers for an Oculus Rift, and spend an hour, four or five days a week, playing fitness-oriented virtual reality games, for fifty sessions. That schedule would get me through the winter and hopefully keep me more active than I otherwise would.
To better illustrate this plan, I made a GIF, just for you:
Unsurprisingly, the science behind Virtual Reality and exercise is still in its infancy.
These printers have been dragged around, beaten up, put in the hands of children and child-like adults, and run through the wringer to ensure that they stand up to the kind of abuse you might expect from the field. Now we’re really ready to make the call and tell you which are the best dirt-cheap, field-ready 3D printers.
My Postdoctoral research has focused on understanding the causes and consequences of public misunderstanding about shark fisheries management. While scientists overwhelmingly support sustainable fisheries management as a solution to shark overfishing, many concerned citizens and conservation activists prefer total bans on all shark fishing and trade. Some go so far as to (wrongly) claim that sustainable shark fisheries cannot exist even in theory and do not exist in practice anywhere in the world, and that bans are the only possible solution.
There’s an important piece of data that very rarely makes it into these discussions. Amidst the ongoing discussions about whether or not sustainable shark fisheries are even possible, one right in my backyard became the first shark fishery anywhere in the world to be certified as sustainable by the Marine Stewardship Council.
However, a few years after BC’s spiny dogfish fishery got certified, the certification was quietly withdrawn. I couldn’t find any information in the MSC reports, or in associated scientific literature or government reports, that explained what happened to this fishery, which was thriving until recently. No scientists, managers, or conservation advocates who I asked about this knew exactly what happened to BC’s spiny dogfish fishery.
Somewhere between the Prusa printers with their paired z-axis motors and the cantilever systems with a gantry arm spanning the x- or y-axis with only a single point of support, lies printers like the Creality Ender-3. Where a more conventional 3D printer uses rails and linear bearings to drive the axes, these printers forgo the standard model.
You won’t find a single linear bearing on the Creality Ender-3 or it’s clones. Instead, rubber rollers pass through v-slot grooves in extruded aluminum, removing the need for complex gantry systems.
This is an incredibly robust method for cutting costs, but it is not a compromise. Roller and v-slot printers can be just as precise as their rail and bearing counterparts, and the mandated all aluminum construction makes them strong and durable.
For a general-use field-ready 3D printer, you could not do much better than the Creality Ender-3.