Got a Bluthner upright in with tuning trouble, customer spent a lot of money 7 years ago with a big firm. I thought it would be a re-pin but the sections are coming out. I think, other than replace the whole plank, use coach bolts and pull it back into place.
Comments from technicians please
Members of the PTA & I.M.I.T., MIA and Trading Standards Approved. C&G qualified and N&S Diploma. PTD(Precision Touch Design) Technician.
- Colin Nicholson
- Executive Poster
- Posts: 1839
- Joined: 04 Jul 2010, 19:15
- Location: Morpeth, Northumberland
Not sure of the cast frame arrangement, but I would imagine it might be best to completely fill in & plug the coach bolt holes, then retap threads with a tap/die set.
I know someone who makes the tap & die sets - he did one for some key capstan grub screws a few years ago. Thats my only suggestion.
I would also use a lot of Epoxy as well at the back. I have filled all the holes on a Bechstein upright with Epoxy and re drilled them for 0/0, put 2/0 in. The pins are jumpy but it holds well, still tune it after about 20 years used Blue pins
Have fun its one of them jobs you never quote the right price for
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