hi guys,

i'v been thinking about getting some greenlee knockout punches. go uou guys use them?

and how? on a auto shop hydro press or with the hand held hydro pump driver?

thanks

 

I own two sets up to 6 Inch my old one with the hand pump and one with the foot pump but you can rig it to work on bigger pumps cause both of mines comes with quick release fittings to use different type pumps on the fly

 

thanks for the reply,

which brands are your stuff?

wow, 6"!!??!!! whats the max thickness for that size?

 

I can't remember the brand of mine. But they work ok. I use them on the press, we've done 5mm alu with them before and 2mm mild.

 

mines are greenlee and i think they make bigger dies than that i only used the 6 inch once but the job more than paid for it.

the thickess i have went tru is 3/16 ss

 

We use greenlee KO sets all the time at work. Typically the hydro. It will do stainless, but it wears out the dies fast.

Other than that it is a great set.

 

Luckily for me, my work is in electrical industry... so knockout sets are easy to come by. Have used them on a couple of my projects on my car. Work great.

Greenlee hand pump hydraulic KO is great but also a company called maxis tools makes a drill driven and it is a beast. The reduction gearing in it means you drill has plenty of umph for most stuff. Nice cause it is less hassle than dragging out a big KO setup like the GreenLee if you don't need to do anything overly thick material.