Double Bass Ebony bridge adjusters

[stefaniw80401]

Well that was an informative post from vejesse, thanks. Your adaptations/improvements sound reasonable. I can see why, with ebony being so expensive, why you would not want to machine the adjuster out of a solid block of material, but I guess that could be done -- no?

But what about Lemuel's note about gluing the shaft up into the bridge leg? Is that what Teller wants?

 

[vejesse]

Well that was an informative post from vejesse, thanks. Your adaptations/improvements sound reasonable. I can see why, with ebony being so expensive, why you would not want to machine the adjuster out of a solid block of material, but I guess that could be done -- no?

But what about Lemuel's note about gluing the shaft up into the bridge leg? Is that what Teller wants?

Teller doesn't offer installation instructions that I know of. But I've seen various schemes people have tried where the threaded spindle is glued and or pinned to the the bridge and the disk rides up and down. For a variety of reasons it's a lame way to do it in my opinion.

The nice thing about the Teller adjusters is that they're finished so nicely compared to the other wooden adjusters that are commercially available. I'm not sure the ebony is that expensive but it's very difficult to make wooden threads that small and I think they must use some high tech means like diamond/CBN cutters to machine the wood, clearly with CNC equipment. Maybe they treat the wood to harden it first too. Our shop used to mount a small router with a 60 degree cutter in a lathe toolpost, and use the lathe half nuts to make the threaded spindles. It works great and you can make any standard or non standard size thread you want, but it's a waste of time now that I've found the Teller adjusters.