This message was posted by Ian on AmayaUsers.com. PLEASE DO NOT REPLY VIA EMAIL. Instead, respond to the thread on the WEBSITE by clicking here: http://www.amayausers.com/boards/ultimatebb.php?/topic/1/307/2.html#000018 QUOTE: ----- Originally posted by Rod or Sharon: ....... at both ends and inside of the sensor tube are extremely sensitive crystals that react to pressure. As material thickness increases, the thread will be pulled up tighter against the sensor tube and this will send a signal to feed more thread on the next down stroke. As the material thickness decreases, a signal will be sent to reduce thread feed on the next down stroke of the take up lever. ----- Rod, Thanks for the info. I appreciate the technical side.... instead of: "It's jess' magic". Knowing how something is supposed to work helps when I'm trying to find the root of a problem. Ian =========================================================== The AmayaUsers Mailing List Website: http://www.amayausers.com Discussion Board: http://www.amayausers.com/boards Subscribe/Unsubscribe: http://www.amayausers.com/list ===========================================================