Seperating ABS and Glassfiber

Mine is about 500 kilos :) I tried water with salt but as you said the densities are pretty similar.Both of them sink or both of them floating over. Maybe one day somebody make a system to seperate them.

One pellet at a time :)

Both materials are more dense then water so that wouldn't work.

Unless... you created a solution that was lower then one of the resins density and higher then the other. Then in theory, one would float and the other would sink. Of course it looks like the PP would need to have a significant amount of filler to gain the density needed to seperate the materials. Generally it looks like 10% GF PP and ABS have pretty similar densities. Of course then you would have to figure out how to clean the solution off of the pellets. Hope you didn't mix too much together.

It reminds me of a time that someone, at the first company I worked for, mixed a 300# batch of virgin GF PEEK with GF PES regrind. This was back when PEEK was running $70/#. The brain trusts running the place decided to try and seperate the regrind(fines and all) from the virgin pellets one pellet at a time. We finally convinced them to stop doing it once we showed them it would have cost 4 times the amount in labor to sort out the material vs. scrapping it out.