I’ve been struggling to figure out the source of the water leak on my oldest Thumler. After replacing the lid gasket and flipping the lid, I noticed it was really flowing today… and not at the lid.
Lo and behold all of these corners are splitting/cracking…
How old is it? I keep buying vibratory tumblers, but know that I should upgrade one day.
Could you pour in some PlastiDip and let it run, to seal all the gaps?
I have the Frankford wet tumbler, and it’s a nice unit…
It’s years old… maybe 4-5??
I have two of them and one liner fits tighter than the other, and one liner sits lower/bottoms out in the can. So I don’t know if it’s stress from sagging when sitting upright with the lid off… or maybe the chlorine in the city water weakened it.
Both tumblers are indoors. Looks like it’s $60 for new liner. 
JB Weld or ultrablack gasket seal.
Couldn’t hurt to try some repairs I guess. I bet if I put a layer of the lid material in the bottom of the bucket it would relieve some of the pulling on the corners.