Hi all could I have suggestions please for a long-lasting material that can act as a clutch between a motor and a pot shaft Or suggestions for a different construction method perhaps I've found (a) a range of inexpensive pots with access to the back end of the shaft and (b) that other types aren't very difficult to dis- assemble anyway to make access. There is a variety of cheap 3V to 12V motors I can use I'm DIY-ing because pots aren't available in either the value or configuration (eg stacked) I want, or are infrequently available or are tres expensive The material would have to be grippy enough to transfer motor drive to the shaft but not so grippy as to make the shaft hard to turn by hand against the gearbox. And also not wear down of course, although the clutch would be (lightly) spring-loaded I used to have a cheap motorised pot around here somewhere and have a sneaky suspicion it used some sort of direct drive that dis-engaged when the shaft was turned by hand or when the shaft reached the end of its travel TIA Joe * * ********** Quality PIC programmers http://www.embedinc.com/products/index.htm --=20 http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .