Grenade Tricks ???

[Flaschenjager]

Hey everyone -
Does anyone have a real solution to removing the concrete like sealer in a fire grenade. A small hole in the middle of this is gone, as well as the solution/contents, but the rest is glued to the bulbous neck. [] It's soaking now in o. acid, but I doubt this will make it budge. Thanks in advance.

 

[zanes_antiques]

maybe try heavy duty furniture stripper?

 

[Bottle tumbler]

When you say concrete, do you mean stone concrete. your just out of luck, i think, I do know over years of using rock salt on any concrete service it eats it away and breaks it down,
is it filled solid or just a coating? if it is an epoxy, use aceton,found at local hardware stores, melts it like butter in a few hours
rick

 

[capsoda]

Muriatic acid will do a quick number on alot of that type stuff. Or try soaking in water for a week or two.