HillOBeans
Joined 14 years ago
Joined 14 years ago
To use your turn of phrase: Evolution is not based on evidence. It is not falsifiable. It is not a scientific theory. It is a quasi-theory-of-the-gaps based on the assumption that there is no higher intelligence that created anything, and all we see HAS to be the result of natural processes. It ignores the mountains of indirect evidence pointing to design.
My point is: we see cars, computers, planes, etc. around us all the time, but we would never dream of suggesting that they are the result of natural processes. They are the obvious result of SPECIFIED COMPLEXITY, which requires some intelligence for its existence. The more we learn about the inner workings of cells, even at the molecular level, the more obvious it is that we are dealing with a SPECIFIED COMPLEXITY.
1) Not all plastic is created equal. Even plastic from a "good" supplier is sometimes suspect when your printer jams. You have to check filament diameter consistency. Melt temperatures will also vary even on the same "type" of plastic from different manufacturers.
2) Careful calibration and leveling is a must. Prints will fail frequently if you skimp on this step. It is imperative to check belts, drives, etc. frequently to make sure everything will run smoothly. There are also parts that must be kept lubricated.
I guess you could say that owning a 3D printer is more akin to owning a machine lathe than a traditional "printer".
From the software side of things, I use FreeCad for designing, Slic3r for slicing, and Pronterface for printer control with pretty good success. I have even been able to sell some products I have produced locally, and have a patent application in the works for one of them!
All has not been a bed of roses, though. One major problem I had took me weeks to track down. I kept having extruder jams during prints. None of the usual fixes seemed to help. I finally noticed that melted plastic was coming out from under the hot-end insulation! It turns out that the hot end assembly was unscrewing itself during the printing process. I had to disassemble it, clean it out, wrap the threads with several layers of teflon tape, and start again. It has been OK since then. I could replace the hot end with a new design MakerGear has now (they seem to iterate rather quickly), but don't want to shell out for it yet.