Our Wood Flex Trombone Mandrel offers a real improvement over conventional type table leg sticks. Used for holding instruments for all types of repairs, our mandrels are machine tapered from hardwood and then cut and quartered through the length of the tapered section.

END VIEW SHOWS HOW MANDREL IS CUT AND QUARTERED TO ALLOW FLEXING WHEN INSERTED IN BELL PIPE

This unique design allows the sides of the mandrel to flex as the mandrel comes into contact with the inside of the instrument bell, and thus provides more contact area between the bell and the mandrel allowing for a better grip of the instrument with less chance of the mandrel ballooning out and damaging the bell pipe. Secured to the clamping end of the mandrel is a rugged square block of UHMW (ultra high density polyethylene plastic) which allows the mandrel to be clamped tight in any standard bench vise. These are a must item in any brass shop.