Double Bass Endpin rubber unscrewing

#21
As suggested above, wouldn't Loctite plus a good tightening do the trick? I mean, surely this is a common problem in all sorts of mechanical items and there must be tried and true commercial solutions without having to resort to a variety of bodge jobs (with the greatest of respect to other posters!).
 
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#22
neilG said:
Oh, yeah, I re-read your description of it. Couldn't be simpler.
View attachment 3618060 Here's my much more complicated Lou DiLeone creation: It's a 1/4" brass nipple reamed to press fit onto the 10mm pin. The tip is 1/4" galvanized coupler that a 3/4" crutch tip fits perfectly onto. The beauty of this setup is that if you lose a tip, you can get the parts at most hardware stores for a few dollars.
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That makes me cry! Anyway, my thingy weighs only 24 grams.

delrinPlug.jpg
 
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#23
No need to make it complicated. First, be sure the brass collar is tight on the pin. Sometimes I will put a drop of thick super glue on the threads and tighten it. Next, use locktite or titebond glue on the threads. Holding the collar with pliers, tighten the tip by hand. That will do it.
 
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#25
The nail polish I used 10 years ago finally gave up the ghost last week. So not now that I know THAT doesn’t work. I’m trying teflon tape (mostly because I ran out of loctite and my partner doesn’t wear nail polish).
 
#32
Ukiah Bass said:
Can you develop this conclusion? I’m curious about why one way is right and the other wrong.
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I never said that it was right or wrong, I just don't like the feeling of having a loose tip on my endpin. I always play standing and I seldom had a rattle but the feel of the bass when it spins freely on the floor is unpleasant to me. Just my opinion, not a universal truth. For what it's worth, as a wise TB sage had already warned me, the teflon tape gave out quickly. I'll be picking up some nail polish from the dollar store the next time I go by.
 
#33
I once had an end pin ball keep coming off.. it was so bad I almost lost it on the load out. I had to retrace my steps after getting to the car and finding it missing. I asked my luthier at the time if I could simply buy an extra in case it happened again, he kept asking me why I needed an extra..?! (I got frustrated with him questioning me on such a little issue, why he didn't want to sell me an extra rubber ball is beyond me- I haven't used him since.) anyway, I don't ever use the spike, all my gigs are pizz with amp, so I dropped some super glue in the ball and screwed it on. Hasn't fallen of again.
 
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#38
For seated playing, I use a pin fabricated from a spare 10mm rod, oak, and a New Harmony spike.

The tip stays in place fairly well because the threads aren’t too loose, but a tiny rosin booger at the top of the threads provided a little extra grab. This wouldn’t work if you wanted a semi-permanent bond. On my standard pin, a rubber washer between the tip and collar worked well when tightened until the washer compressed.
26B2C86F-FF13-46F2-B3C8-ABD570918437.jpeg
 
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#39
I have this problem also. One possible option is to get a thin hex nut (aka jam nut). Put the nut above the screw on tip, hold the rubber tip firmly and tighten (jam) the nut down against the threaded portion of tip.

John
 
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#40
Ukiah Bass said:
This shows the rubber endpin slightly unscrewed for noise-free swiveling.

View attachment 3616991
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OK, I have to retract what I said before. I liked the swivel feature but there was an unintended consequence: a buzzing sound when I played the E string (esp. open). Screwing the rubber peg tight against the nut solved the problem. Now resonance is excellent across all four strings. I added a few drops of Loctite to keep it in place. So much for beginners who 'know it all'....
 
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