Topic: 3D printer filament limitations
Hello,
I am hoping to get information from someone who has actual real experience with 3D printers. I am a plastics person and have wondered why only PLA and ABS were chosen by the FDM industry. Both are amorphous materials so I suppose they have good melt strength at a large temperature range. There are better materials out there and are starting to become available for 3D printers. I have some questions which are of concern to me.
1. There does not seem to be rubbery materials available and I am wondering is this because the simple extruders cannot feed soft stretchy materials properly. Other possibilities are some soft materials have liquid softening agents that will give off fumes during extruding and this is considered a negative.
2. I am trying to understand what are the size limitations that will cause a non feed condition either too small or too large for 1.75 mm machines? Are there some extruders which can handle wider variation than others if so how wide?
3. I have tried making my own filament out of 'other' materials and have I cannot feed my filament if it is +/-.25mm which is not at commercial +/-.05 mm tolerance but I would like to know what tolerance can work in which machine?
4. Does filament surface finish make the difference in whether a filament feeds?
I would appreciate answers from people who have this knowledge as there seems to be a large void out there for informative information.