Where to "Punch" Boge Carto ??

[Bahiaboy]

Im sure it must be in here somewhere but cant find the right info !!!
I am receiving a supply of Boge cartos tomorrow along with a tank and a Cart Punch,I would be grateful for any advice where exactly I need to "punch" the carts is there a specific distance I need to know ? any ideas/tips gratefully received

 

[pizza2me]

Hi bahai. It depends on the tank you'll be using. tanks are different lengths. Personally, I hold the carto next to the tank, with the base/thread sticking past the tank. Then punch so that the hole would be about 1/4 inch above inside the tank. Make sense? Probably better pics, explanations or videos somewhere.

 

[sh_]

Take a look at this video:
$7.00 Carto punch from local hardware store - YouTube

It might be useful for sure!

 

[yo vapo]

I punch 'em just above the top of the bottom grommet (let's say 1/16" - 1/18" to the center of the hole), with the bottom of the bottom grommet maybe 1/16" - 1/8" above where the threads meet the carto body. Hope that made sense.

Doubt it's all that critical, it's just what I do.