Bit of a different question, but I am doing a small project to do with compacting swarf from mills/lathes, etc., into briquettes to save space and to extract any coolant. I cannot find any information regarding the force required to compact aluminum/steel swarf. Are there any calculations or rough estimates on the force to compact metal swarf? Any standard steel or aluminum, for example, would be fine. I did find that the density of aluminum swarf is 0.25 g/cm^3 if that's any use. And the compaction ratio I'd like is 1:4. I just can't find anything to even get a rough idea. Any help is greatly appreciated. Thank you.