I'm hoping that I can actually just further direct the fan air so that I can have an open, ductless hotend. The red arrow is the expected current air direction (from feeling the output air stream) and the orange is the ideal air flow with a duct similar to a tower fan or car AC.
The Aesthetic Series
I've also considered a new solution of filaments and their order:
- Also used for cleaning/purging since it's readily available and white PETG/PLA/ABS is less flexible than cleaning filament thus easier to extrude.
- Silver / Stone
- Silver: A bright silver material for creating silky or metallic-looking materials like copper, gold or car paint.
- Stone: A white, mortar-looking material for creating rocky materials like brick, sandstone or concrete. This may need the fuzzy-skin slicer feature to make it really look like stone.
- Moved to before the CMY colours so that it effects subsequent colours less during changes.
- Potential CMY filaments from eSun:
- This is also so matte or glossy materials can be created. If the other materials are glossy, this would ideally make the final filament look matte.
- [Edit 1 - Feb 22] However, for an alpha channel, this will have to be the first material input into the system.
- I have higher expectations that this would work compared to the gloss/transparency strategy.
- TPU Glue
- Ideally, this is a material that usually won't stick to the previous materials so that its absence can act as a support interface.
- May conflict with the glossy/matte strategy (if it's even possible), which is probably fine because any print that needs that feature is likely to be more aesthetic in nature anyway. It is a better strategy to load in both silver and stone.
Other materials not considered in the above strategy:
- Wood - would go between Silver and Black so that different grains could be printed
- Marble - between Silver and Black, or replaces Stone
- Glow-In-The-Dark - between Cyan and Transparent
- both as only the surface will emit light and so that the transparent material can both protect the nozzle and make ghostly filament.
- CF-PETG/CF-PLA - replaces Black but would likely be in the "engineering series"
- Soluble - replaces TPU Glue
- Rainbow - it'll be a disappointment if such a filament is needed on a hotend like this
- probably depends on the print and the colours, but I don't even know if the toothpaste effect would even be preserved
- Foam - Like CF filaments, it's probably something for the "engineering series"
The Engineering Series
It's understandable that an engineer won't spend £300 to mod their printer just so that they don't need a massive filament rack (likely also valued at £300+). This is why I've also thought of the engineering series strategy, which is properties based:
- The cheap all-rounder (PLA/PETG/ASA)
- The high temp (PBT/PC/PPS?)
- placed after the cheap all-rounder so that there is a chance of purging it out
- The (very) flexible
- So that the flexible-to-rigid range is as wide as possible.
- Chopped fibre / stiff
- Most of the stiff material should be formed in a tube-like extrusion as that's where most of the stress will be concentrated.
- High inter-layer bonding, low stiffness and UV resistant.
- AKA TPU Glue
- Foam / expanding
- Ideally, this would actually go before most of the other materials to emulate AMTEx, but I don't think reality will be so idealistic.