I only made one with both effects as a trial, but I do have one that only has the light (only glow 1 though so the flicker is pretty bad) that I put up at my shop in Grindstone on Angel I, which is connected to the Aquarius west coast hub.
If I get a chance later I’ll try to make a batch with better glow and magnetic range.
Thanks, I was able to test the auto-harvest and it works great. It’s nice to just hold the spanner and see the corpses explode.
Random forge question. Why did my 100 pure boon compound 1 go from 100 to 0 after 15 rounds of forging?
After posting I realized it was because of the amount of tools I was forging…
But is it Sonic enough? 
Not a forger myself so how many arms and legs would one pay for such an item? I have limited supply of either.