Posted on 06/30/2016 3:26:49 PM PDT by 2ndDivisionVet
Porosity. Exactly what I would worry about.
I was going to ask what “extracting binder” meant exactly. Apparently, it really does leave a porous object.
This would have to be accounted for regarding weight, strength, etc. Many projects rewpquire knowing characteristics as lowly as the weight of the object, much less strength.
Not just an oven. A kiln. You can do almost as well with a lost wax process.
Sintering has some advantages, though.
The nozzles gotta be pricey.
No. The high temperatures do not occur in the printing process, but in the kiln. Print first, sinter later.
I was thinking high temp oven depending on just removing the vehicle, or bonding/sintering the metal particles.
There are micro-encapsulated resin coatings that are applied then heated, the heat allows the mixing of the resin and catalyst and it changes chemical structure. Without heat, the coating wipes off, but after heat, it is impervious to solvents and must be physically removed with abrasives.
As metals are not compounds, this low heat blending won’t work, but the similarity to lost wax production is closer to what is happening.
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