Originally Posted by
carbogast
Great timing, thanks! Just so happens I need to unstick some bottom caps on an older horn I just got.
If they remain stubbornly stuck, particularly on an older horn, try PB Blaster. Instead of applying it out of the spray can, see if you can get some of it into a syringe or a needle oiler and then apply along the edge of the cap. Or just spray some into a can, dip a needle in it, and do the same. Let is sit (horn upright) for a day, maybe applying a little more. If that doesn't work, keep it up. I've let it do its work for as long as week on some stuck fasteners. It's pretty amazing stuff -- a catalyst rather than a "penetrating oil". I've used it on everything from log splitters, to tractor rotary mowers, to old tubas and euphoniums.
Last edited by ghmerrill; 06-22-2013 at 09:20 AM.
Gary Merrill
Wessex EEb Bass tuba (DW 3XL or 2XL)
Mack Brass Compensating Euph (DE N106, Euph J, J9 euph)
Amati Oval Euph (DE 104, Euph J, J6 euph)
1924 Buescher 3-valve Eb tuba (with std US receiver), Kelly 25
Schiller American Heritage 7B clone bass trombone (DE LB K/K10/112/14 Lexan, Brass Ark MV50R)
1947 Olds "Standard" trombone (Olds #3)