First Impression (and Last Impression) - CZ-300

2020-03-05 - I had a large enough time snippet to setup a sample 3D plot from the SD card provided with the printer. I leveled the bed twice, it came out seemingly great after the second round. I then loaded the filament and setup the warming up process. Once the bed and nozzle were up to temperature, per the readout on the controller, I loaded the sample and waited for it to start. It was a few more minutes as the nozzle was not quite up to temperature. Then, all Hell broke loose; the filament retracted back into the tube, then drove forcably back into the tube, pushing the tube off the filament feeder, then it retracted the filament back again, pulling it right out of the nozzle and wrapping the reel end over the filament feed motor, jamming that up. While that was happening, the nozzle starts moving from its parked position and keeps trying to push down onto the heated glass bed making a deep scratch from the corner to the origin where it started to scratch the first layer of the model into the glass. I managed to find the stop print option on the controller before any further damage ensued.

In the end, I disassembled and boxed the printer up the following evening. It was evident that several items were not right about this printer; miswiring the extrusion motor and the Z-axis being one of them. The enclosure had a void if open sticker, which was the clincher. It went back to the Amazon seller and I purchased a Creality Ender 5 Plus, which I have had no problem with at all. [an error occurred while processing this directive]

3D Printing and Patent and Copyright Law

I was thinking about the implications of the ease with which an individual could make one or more copies of a product, using a 3D printer. While I formulate mythought on the subject, following are some links on the subject.