Hi,
Thanks to everyone who reacted on the carrousel problem.
First I want to say that the evacuation of the carrousel is not the cause 
of spilling carbonate from the buckets. I tested this thoroughly. B: on 
carrousel advance.
We are trying to modify the stepper motor now. And I am going to do some 
tests with the belt tightness( I have a belt driven one). A good and simple 
solution is a steel ball on/in the boats, certainly worth a try. Concerning 
the screens I fear there will not be enough contact with the acid and cause 
memory.
Arnold

 Arnold van Dijk
 Institute of Earth Scienses, University Utrecht
 Budapestlaan 4
 P.O.Box 80021        Phone : (xx)-31-(0)30-2535004
 3508 TA  Utrecht     Fax   : (xx)-31-(0)30-2535030
 Nederland            E-mail: [log in to unmask]