Removing Trombone Handslide Dents: Bass Trombone Restoration Project #5

This is the 5th video in the "Restoring a Bass Trombone" series. In this video, Art starts to remove the dents in the inner and outer slide tubes. Because of the seriousness of the dents, it took thousands of taps to get the slide work started. next week, Art will continue to work on the slides and try to make them work well.
Here is the link to the playlist "Restoring a Bass Trombone Project"
• Restoring a Bass Tromb...
Here is the link to the playlist "How To Repair Trombone Handslides"
• How To Repair Trombone...
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[@GenGrey20]

I am really enjoying watching the progress of this horn. Thank you for committing your time to restore an old trombone like this. Someday I hope to turn instrument repair into a hobby like this. Thank you.

[@jdmccorful]

There are many ways to slay the dragon. Hang in there baby!

[@user-bk3pk4wv9j]

Taping is what we wanted to see!

[@MrBibobs]

Wow! You have plenty of patience. I don't have the same roller but trombon rolling slide dent tool from ferrees. Sometimes it works just well but sometimes it bends the whole slide a little so the dent looks good, but you have to fix the slide alignment.

[@1090yoyo]

Do you bend slides with Ferrees N87 ?

[@richreynoldsCIT]

great info and video!

[@chriskowalski7038]

I prefer the long versions to see exactly how you do it...I can appreciate your patience when doing this delicate work.really enjoy all your vids...

[@derekhayes8209]

Thank you for this video and the series. I remember you have said several times before that what you do is not the only way. Always great to see your work. My alto trombone is in dock in KL now, hope they do a great job like you do!

[@mkmcl5478]

As a blacksmith I could watch you hammer a slide all day! Love the video and explaination of techniques to do the job...May I ask where I would find slide mandrals?

[@TheBrassandWoodwindShop]

You can get slide mandrels from Ferree's Tools. ferreestoolsinc.com

[@williamrabun6979]

The long videos are the best!

[@TheCrazyPozavnist]

Great work man! Endless tapping ftw

[@Dubbin64]

Nice vid Art, always look forward to Fridays for these series episodes

[@1090yoyo]

The time needed to fix trombone slide dents is infinite.. actually a speed-up video could be a good way to see the evolution of the dent. Maybe with more zoom on the dent area.

[@JWalterHawkes]

So much great info here. Thank you!

[@manuelrubiolopez7891]

I am amazed that you could actually rapair that slide

[@lwilton]

On your concern with the dent roller possibly flattening the tubing: If you think about it, your hammer and mallet are a lot flatter curve than the curve in the dent rollers. In fact they are a reverse curve to the tubing you are working on. So why don't they flatten the tubing? Because you know what you are doing and don't flatten the tubing when you don't want to. I think the rollers are probably the same way. Yes, if you just roll back and forth in one path they will flatten a smaller tube. But if you move the roller around the outside of the tube and roll from different angles and with different pressures you can keep the tubing round, just as you do with the hammers from multiple angles. The possible advantage over a mallet or hammer is that you are effectively pressing from several closely related angles at once, and not just one small spot. I also suspect that the roller is two tools in one. The white roller is a mallet and the metal roller is a hammer. I suspect you use one roller at a time, and not wedge the tube between the rollers. Now all this is just suspicion on my part, I've never used a dent roller like that, but it makes sense that it would probably work that way. I'd suggest trying it on some junk tubing to see what it will do.

[@aaronhastie830]

I would think the slide dent tool would only squish the tubing of the slide if the recessed diameter cut into the rollers was smaller than the diameter of the slide you were using it on. It looks to me like the way it was intended to work was by having one main point of contact with the slide to smooth out dents. The idea in my head is similar to how a circle placed inside another circle of a larger diameter will only contact in 1 place. The size of the inner mandrill should not matter too much as long as it is close enough, given the diameter of the tool is larger than that of the slide. I don't know if that makes sense, but I hope you understand what I'm trying to say!

[@jasonmcelroy7158]

What size mandrels are most often used for trombone slide repair?

[@stevesimpson3589]

Have you used the Ferees trombone hand rollers?, I do have and have use the votaw roller, however it does not IMO really remove the dent, its good for smoothing out and reshaping an oval tube

[@jackcantrell143]

At what point do you contact the manufacturer and buy a replacement slide? How much do they usually cost?

[@TheBrassandWoodwindShop]

I think that slides are pretty close to the cost of a new instrument. The slide would need to be in pretty bad condition for a replacement. It really would be a judgement/sentimental value call.

[@patoni860]

And I appreciate everything you do... You got to get yourself a cash app account... And post your cash app.. Because people can even send you $0.50 and it adds so much more to what you are trying to do... And consider that... But I'm going to challenge you my man

[@TealCheetah]

Be sure to take little stretch breaks, avoid repetitive stress injuries!

[@patoni860]

From zero... I would have went and bought me a dowel that fit the size of the inner bore... I would not have worried about the inside diameter of the outer bore... I would have bought a 3/16 in threaded rod... I would have taken that ride home hit it with sandpaper to grind the sharp points of the edges down... Then I would have slatted the whole thing and silicone... I would have taken a sinker weight for fishing... Then I would have taken tape wrap that around the head of the weight... Then I would have carved a Groove down the center of the wooden dowel ... stick the threaded Rod Covington silicone with the fishing weight on the end first... Then take the wooden dowel with the excussion and what that dent out in 5 minutes... And created a tool that will do it for me for the rest of my career... But thank you for making me think of that

[@1090yoyo]

I don't get how your tool is supposed to work. Are you really suggesting to use wood and lead (fishing weight) to deform a trombone railing ? It's work-hardened brass (or nickel silver), no way it would work.

[@patoni860]

@@1090yoyo you just watch them use a mandrel to get the dents out from the inside... Mine is just a two piece mandrel

[@patoni860]

Have you ever tighten up the rivets on a music stand... What you hold a hammer behind it while you tap it with another Hammer from the front... You never try to fix a rivet? Take a rivet that's loose in a music stand and just keep tapping on it from the front it will never get done... Now hold a hammer behind it against it... And tap with another hammer on the front of it that's how you fix a rip it... And this is the same thing is happening with the trombone that's too much vibration when you tap it is nothing to stop it and there's the tapping is ineffective

[@1090yoyo]

here the mandrel is taking the role of the second hammer (which you use as a mini-anvil if I get your comment) It's not that big of a concern if you squeeze the music stand metal changing its dimensions... but on a trombone slide you'll make an out of round part and mess it.

[@patoni860]

@@1090yoyo not really because an anvil is stable... Just holding one hammer on the other side while you tap it on the other side just reduces the vibration