This message was posted by Rod or Sharon 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/cgi-bin/ultimatebb.cgi?/topic/1/401.html#000011 Ron, Presserfoot height....you are right....is dependent on material thickness, period. It's soul purpose is to hold the material down and prevent flagging. If, for instance, when sewing on thick sweater material, the presserfoot needs to be set to "compress" the material, but not set so low that the foot can cut or damage the material either. If the presserfoot is set too high, fraying and thread breaks will be an immediate result....the presserfoot is varible for a reason. WD-40 is a penetrating oil and should not be mixed up with lubricating oil. WD-40 when used on the rotary hook works well to disolve any gummy residue from spray adhesives and could be used to clean any metal to metal surfaces. It should not be used on plastic or any rubberized surface area. Any surface where WD-40 has been used should also be lubricated with the proper lubrication, be it grease or oil. Rod Springer Amaya Tech & Trainer =========================================================== The AmayaUsers Mailing List Website: http://www.amayausers.com Discussion Board: http://www.amayausers.com/boards Subscribe/Unsubscribe: http://www.amayausers.com/list ===========================================================