1. Have any amount of low-grade ready (preferred 500+)
2. Go to HQM Quarry whether you use /home or live near & Put it in the "Fuel Storage"
3. Give it a bit, the yield is 1:1 meaning you will get the same amount of low-grade u put in to HQM
4. Take the ore out & smelt it.
5. You can trade to bandit HQM > Scrap
6. You now have 1k+ Scrap which you could buy around 4000-5000 LGF with depending on the day you do this, now you can simply rinse and repeat!
REQUIRES SOME PATIENCE