What inflator to use for knobby balls?

[RikaKazak]

I heard having consistent knobby ball psi is important for smooth and trouble free vending.  So I was curious, what inflator do you guys use?

[Coal River Vending]

I use them and I actually make them different sizes. No issues. Any air compressor. 

[RikaKazak]

So I just used a random hand inflator (I've owned it for years, use it for bike tires or basketballs etc.).  My understanding is that if you use a plush claw to do knobby balls, psi is important.  But if you use a legit knobby claw (aka those claws that have rubber tips and different looking top part) psi and size doesn't much matter.

(I could be totally wrong on that, feel free to correct me)  But I just put the machine out a few weeks ago, all the balls are different sizes, types, psi, etc.....so we'll see  lol  Vended fine in my garage.