Working with Weld-On 16 ?

[DiverDude]

I'm building a HOB sump and given this sucker will hold ~50lbs of water, I bought some Weld-On 16. I've only ever used the water-like stuff before and always clamp-up my pieces and then apply it when everything is as I like it.

With the '16' though, it appears that you have to apply a bead and then assemble which makes making a box quite challenging.

I know a number of people on here have used this stuff before -and more than likely built sumps and other 'boxes' with it.

Any pointers or should I just stick to the water-like Weld-On 3 ?