Hi, I recently pulled a big dent out of a '72 CB350 tank.

I bought and used this dent puller...

https://www.amazon.ca/gp/product/B07HF3QJTW/ref=ppx_yo_dt_b_asin_title_o05_s00?ie=UTF8&psc=1

The dent was probably 5" x 3" and .5" deep.

It was a lot of work. It took many pulls. Through trial and error I figured out that its best to start pulling from the edge of the dent and work your way towards the deepest part.

The final result wasn't perfect, there will be minor fill work when I strip the paint, but it worked.

Hi Charlie,

Pressurizing the tank can give whatever you're using to pull the dent out a nice helping hand from inside. It's worked for me before, once a dent even popped out on it's own.

There is one caveat though. Too much pressure can give you an unwelcome increase in fuel capacity. Saddle tanks are particularly vulnerable and I'd recommend bracing the two saddles together before pressurizing to make sure they don't spread apart.

I'm in the GTA and you're welcome to bring the tank around if you're local.

Cheers,