Hi folks, I still have real issues with my VPMSS20 Peter Pugger stainless steel mixer that I bought some months ago. I work with porcelain on the wheel and mostly need it for mixing stiff porcelain clay. It would be great if you could help me with your experience.
There are two main problems:
- The pug roll ALWAYS has little air bubbles in the first 30 inches, mostly on the outside to 1 inch deep. The really always friendly team of Peter Pugger said the reason is that it's too full loaded so the connection to the vacuum chamber is blocked and this causes air getting into the mixing chamber when I switch from mix to pug. I also see the vacuum fall at that moment when the pugging begins. The manual recommendeds in that case 'stop, let vaccum settle again, mix shorthly and pug again' but that doesn't remove the air bubbles once they got in...
I tried several times to load it less full, but then it's too less for the pugging dynamic what causes the machine to empty only half!! There seems to be only a TINY tolerance between too much and too little and not something around 8 lbs as the manual says. I just put two or 3 pounds less and then it doesn't empty and I can start all new, all the mixing again as I have to add more clay and it has all to be mixed again. You can imagine, for a long day of throwing when I need 3 loads, I can prepare for 3 hours that way.
- also, the mixing quality to me appears not really so brilliant as it is announced. When centering, the clay is not homogen, even if I mix for 20 minutes! I throw with Limoges porcelain what is normally good for throwing, it comes very soft and I airdry it down to a stiffer state I need for throwing. Then I have to mix it again for homogenity for what I bought the machine after several times communication with the company to make sure I buy the right thing. I had the chance to try the NVAS07 before, the new mixer from shimpo, but it didn't work for me as the motor stopped in the moment when the clay consistency was just 'normal' for smaller vases, it only mixed very soft clay. But the mixing quality to me seemed far better than what comes out of my Peter Pugger. The Shimpo has bigger mixing paddles with several holes in them, through which the clay is pressed what might improve the mixing process significantly.
Yesterday, I mixed and de-aired three loads to let them rest for the night and mix them again today. Then the clay is homogen and runs smoothly on the wheel, but it still has the air bubble problem in parts of the roll. And that way it is a very time-consuming method!
The good thing is that the motor really doesn't stop even with stiff clay, the Shimpo NVS07 and also the Venco have that problem of a weak motor power, but surely not the Peter Pugger.
The promise '5 to 10 min of mixing, just let the vacuum settle and then hit pug' doesn't work for me. after 20 minutes of mixing, it is still not completely homogen. Also, if I only let the vacuum needle settle for a moment and then pug, the pug roll is completely still full of air and definately not de-aired. I wait now 3 minutes with vaccum running until I pug, what then causes water in the vacuum pump filter.
I'm somewhat despaired. But maybe I do the mistakes. Would be gorgeous if you have tips for me!!
All the best, Claudia