That's next if these don't work. They seem to be doing the job but at a slower rate. I only use half the water so they don't start to float when the cylinder is upright.
I had a amber whiskey bottle in 1500 grit for 6 days. It looks like it could go another 6 days. It looked like it was about half way done. The only reason I'm experimenting with it is that a 5" or 6" cannister filled with copper gets pretty heavy.
Sounds to me like you found a dump site. Like most dumps, most of the bottles are broken from being tossed on top of each other along with other debris. Keep digging. There are always a few that survive. Be careful that you don't break the precious few that survived.
rwe, Kovel's Bottle Price List has Atlas Ez seals listed from $2.00 to $28.00 and one version at $300.00. That's their 11th edition so they have probably changed abit.
Road Dog, It's in the tumbler right now, so I don't have pics yet. It looks identical to the cobalt J.A.L. you have, but its a green color. Like a teal. As soon as it's done, I'll post pics. By the way, I assume J.A.L is Lomax. Is that correct? Thanks for your help.
Rick, I tumbled the bottle with the epoxied top and it came out alright. However, there was a hole in the neck just below the blob top that had been epoxied and I didn't notice it. As you said, the tumbling took out the epoxy and exposed the hole and I think a few more hours would have been...