I have welded gas tanks by filling them with water. All except a very small
area that needs to be welded. I would tilt this area up to be the highest point.
The water displaces any gas vapors left around to ensure your safe. Only thing
is,  I've found that no insurance co. will allow this in any buisness. So it's
still must not be very safe to do.
                                                             EMZ

bentbtstr8@aol.com wrote:

> Assuming a used tank has been emptied and air-dried completely for a week or
> so, what else can be done to make the tank safe to weld?
>
> My local used parts monger tosses out used gas tanks. Three from 2wd Vanagons
> this week alone. I was wondering if anyone had ever tried to cut a tank then
> lengthen it with parts from another tank to gain extra capacity.
>
> It was just a thought. I am aware that Winkler makes a higher capacity tank.
> The price is just a bit disagreeable.
>
> BenT
>
> If you would like to modify your subscription settings (including unsubscribing), visit:
> http://groups.yahoo.com/group/Syncro
> Please remember that rude or offensive language is not allowed on the Syncro list. Please try your best to resolve differences privately and keep them off the list.
>
>
>
> Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/