Shilament: Difference between revisions
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Shilament is OSE's brand of recycled, mixed material 3D filament obtained from post-consumer waste. | Shilament is OSE's brand of recycled, mixed material 3D filament obtained from post-consumer waste. | ||
The mixtures must be quality controlled and compatible so that materials with similar melting points and properties are used to attain quality prints. There is a whole range of formulas to be developed for what exactly is a suitable filament for 3D printing. The advantage of plastics is that a wide range of mixes, copolymers, blends, and composites can be used combining plastic, rubber, wood, ceramic, metal, and other powders, fibers, or admixtures. | |||
If a | |||
=Quality Control= | |||
*Depending on the amount of effort and skill of the producer - filaments can be made up to tightly-controlled composition if the feedstocks are known and uniform. With nonuniform feedstocks, the challenge is to work out blends that work - and this is a good point for crowdsourcing of thousands of different formulas based on localized sourcing. | |||
*Note that Shilament formulas with hard-to-print materials such as polyethylene, propylene, or high temperature ones such as PEI - can be printed only using a high-temperature printer. OSE is developing such a printer in 2020. | |||
*Recommended is 0.8 and larger nozzles for fast printing of large objects. The worst case accuracy For 3 mm filament is such that layer thickness can vary by 20% if 20% filament width tolerance is used in the absence of a filament width sensor. This is such that the outer surface can have up to 160 micron (<1/5 mm) naccuracy. For bulk objects, such as 2x4 lumber, that means overall one-millionth deviation, which is still orders of magnitude better than commercial lumber. | |||
If a filament width sensor is utilized, this means that prints are perfect regardless of filement tolerances. | |||
Latest revision as of 15:36, 15 July 2020
Shilament is OSE's brand of recycled, mixed material 3D filament obtained from post-consumer waste.
The mixtures must be quality controlled and compatible so that materials with similar melting points and properties are used to attain quality prints. There is a whole range of formulas to be developed for what exactly is a suitable filament for 3D printing. The advantage of plastics is that a wide range of mixes, copolymers, blends, and composites can be used combining plastic, rubber, wood, ceramic, metal, and other powders, fibers, or admixtures.
Quality Control
- Depending on the amount of effort and skill of the producer - filaments can be made up to tightly-controlled composition if the feedstocks are known and uniform. With nonuniform feedstocks, the challenge is to work out blends that work - and this is a good point for crowdsourcing of thousands of different formulas based on localized sourcing.
- Note that Shilament formulas with hard-to-print materials such as polyethylene, propylene, or high temperature ones such as PEI - can be printed only using a high-temperature printer. OSE is developing such a printer in 2020.
- Recommended is 0.8 and larger nozzles for fast printing of large objects. The worst case accuracy For 3 mm filament is such that layer thickness can vary by 20% if 20% filament width tolerance is used in the absence of a filament width sensor. This is such that the outer surface can have up to 160 micron (<1/5 mm) naccuracy. For bulk objects, such as 2x4 lumber, that means overall one-millionth deviation, which is still orders of magnitude better than commercial lumber.
If a filament width sensor is utilized, this means that prints are perfect regardless of filement tolerances.