| Re: Garage sale find
To loosen slides that are stuck, the penetrating oil is a good idea but refrain from wrapping anything around the tubing to tug on it. If you have never done it before, that much force could easily damage the horn. The best way (told to me by a trusted brass repair man) is to tap the tubing over and over with a small rawhide or wooden mallet. I've used a drum stick before with great success. If it won't move by pulling with your hand, just keep at it. You must be patient. If after a couple of days of applying penetrating oil and consistent tapping you have no results, you can also try applying heat. I've used a bunsen (sp?) burner and that worked fine. Again you must be careful. If you get the metal too hot you can melt some of the solder that's holding the horn together and tubing can come apart. I've yet to find a slide that won't move after the above treatment.
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