Cracked mini pBone tenon

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timothy42b
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Cracked mini pBone tenon

Post by timothy42b » Sun Mar 10, 2019 2:36 pm

Putting my mini pBone away this morning (I used it for the warmup sessions at ATW) I noticed the end of the tenon was cracked.

The tenon is actually two pieces, and reversed from a normal trombone: the bell part inserts into the slide part. The tenon is thin red plastic with what appears to be an O-ring glued to the end, and there is a thicker black plastic part that slides over the end and then inserts into the outer slide. That overlay part was loose and slides off.

Has anyone else dealt with that? I superglued the cracked part, but it doesn't look like it will hold long. I could epoxy the outer piece on top, but then I wonder if there's some reason to have it removable. I have a vague memory of someone mentioning this back on the old forum.
timothy42b
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Location: central Virginia

Re: Cracked mini pBone tenon

Post by timothy42b » Mon Mar 11, 2019 7:08 am

Never mind. The outer piece was cracked too. I filled the gap between them with JBWeld, we'll see how it lasts. There's a lot of stress on that friction joint.
minemax03
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Re: Cracked mini pBone tenon

Post by minemax03 » Mon Mar 11, 2019 10:44 am

I know someone that has dealt with this on their pbone, don't own one personally though.
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LeoInFL
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Re: Cracked mini pBone tenon

Post by LeoInFL » Tue Mar 12, 2019 6:42 pm

Try Lazer Bond - the epoxy that cures with the included UV 'flashlight'. That stuff is amazing and really works!
LeoInFL
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Oslide
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Re: Cracked mini pBone tenon

Post by Oslide » Tue Mar 12, 2019 8:41 pm

According to Thomann the pBone is made from ABS plastic (acrylonitrile butadiene styrene), for which
dichloromethane (DCM, methylene chloride) works as glue.
BGuttman will know much better than I... :hi:
bigbandbone
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Re: Cracked mini pBone tenon

Post by bigbandbone » Wed Mar 13, 2019 6:33 pm

NEVER MAKE A TROMBONE OUT OF PLASTIC! Just my humble opinion.
Redthunder
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Re: Cracked mini pBone tenon

Post by Redthunder » Fri Mar 15, 2019 12:42 pm

bigbandbone wrote:
Wed Mar 13, 2019 6:33 pm
NEVER MAKE A TROMBONE OUT OF PLASTIC! Just my humble opinion.
You're right. Trying to create new and accessible innovations to reinvigorate interest in what we do amongst youth and the general public is a terrible idea. Nevermind that the pBone has put instruments in the hands of individuals that would have never have had access or interest in them otherwise.

If nothing else, you can always count on the pBone hate to keep coming.
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dershem
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Re: Cracked mini pBone tenon

Post by dershem » Fri Mar 15, 2019 6:35 pm

For the outer, duck tape works.
byronbloda
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Cracked mini pBone tenon

Post by byronbloda » Fri May 17, 2019 10:55 am

well I say use it as a way to practice fixing the material, but in the end it will probably be cheaper and come out looking better just getting another one.
harrisonreed
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Re: Cracked mini pBone tenon

Post by harrisonreed » Fri May 17, 2019 11:24 am

I think they sound good, but they're expendable. If it breaks, probably time to bet a new one. If only the slides were smoother
timothy42b
Posts: 376
Joined: Tue Mar 27, 2018 5:51 am
Location: central Virginia

Re: Cracked mini pBone tenon

Post by timothy42b » Fri May 17, 2019 6:36 pm

harrisonreed wrote:
Fri May 17, 2019 11:24 am
I think they sound good, but they're expendable. If it breaks, probably time to bet a new one. If only the slides were smoother
Yes. I can make it sound okay, but I can't get past that sticky slide.
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