i'm confused. i thought the issue with sintering tin is that the powder is already oxidized. You can't prevent it getting oxidized during sintering with gas, because it's already oxidized. Right? Yes. I'm wondering if it's possible to change the ratio of pressure to heat, say if i want to sinter at low temp then increase the pressure, or if i want to sinter at low pressure then increase the temp. But, DavidF's article indicates sinter temp is always going to be about 75%, so that tradeoff might not be an option. Another adjustable variable is processing time, so maybe time vs pressure is a possible tradeoff. Yep, as i mentioned above. However, the silicone will be encased in a rigid shell (prolly steel), so there's really no place for the silicone to go. Deformation is still a concern, and that's all about the pressure. Maybe we can find a pressure/temperature/time tradeoff which will not result in deformation. Or, maybe we can simply bring the metal to full melt, and eliminate the pressure altogether. Then it's not sintering, then it's just standard casting. In which case, hardening is still the issue, in which case making an alloy is of interest. Good point! Might not be an issue-- the point of sintering is that it's low-temp. Note, there are thermally-conductive silicones. silicone mold for molten metal pours is an established, validated technique. Powder Metal compact-and-sintering with a metal mold is also an established, validated technique. Therefor, the idea to combine them can hardly be compared to room temperature fusion! thx, but are you locking this thread or ending the discussion?