Abstract: Improved methods and apparatus to quickly and securely fasten a tumbler cup to a spindle turner arm in a consistent and accurate manner. A spindle tumbler arm is inserted into a support body and contacts one or more cams. The cams move a plunger outward forcing a seal against a wall of an interior change securing turner arm against to the tumbler cup. Other embodiments include an expandable bladder placed into the tumbler cup, thereby providing enhanced stability and support; and a threaded support attached via a threaded connection. The expandable bladder and/or the threaded support in such embodiments may also incorporate an internal plunger-cam mechanism, enhancing their functionality and adaptability for diverse tumbler customization needs.

Abstract: Methods and apparatus to quickly and securely fasten a tumbler cup to a spindle turner arm in a consistent and accurate manner. A spindle tumbler arm is inserted into a support body and contacts one or more cams. The cams move a plunger outward forcing a seal against a wall of an interior change securing turner arm against to the tumbler cup. Other embodiments include an expandable bladder placed into the tumbler cup; and a support attached via a threaded connection.

Abstract: Methods and apparatus to quickly and securely fasten a tumbler cup to a spindle turner arm in a consistent and accurate manner. A spindle tumbler arm is inserted into a support body and contacts one or more cams. The cams move a plunger outward forcing a seal against a wall of an interior change securing turner arm against to the tumbler cup. Other embodiments include an expandable bladder placed into the tumbler cup; and a support attached via a threaded connection.