1- upon release of numerous keys, a dry noise is perceived which I have identified in the pusher hitting directly against the knuckle due to the lack of the felt cushion:
-I intervened by dismantling and extracting the hammers but I must proceed with gluing the felts (4mm thickness): WHAT GLUE CAN I USE? Bostik clear?
-at least 5 forkeys have broken the cord that holds the return spring: WHAT GLUE SHOULD I USE TO GLUE THE NEW CORD? Bostik clear?
- I need to replace the damper cloth with one of variable thickness: WHAT GLUE DO I USE? PVA glue (Colla vinilica)?
2- general cleaning of the keyboard: WHAT TYPE OF LUBRICANT SHOULD I USE FOR THE KEY PINS? Is MCLUBE 1725 E, for example, okay?
- for the pins on the forkeys, on the hammer, etc. WHAT TYPE OF LUBRICANT TO USE? I saw CLP PROTEK LUBRICANT, but would Ballistol (cheap!) be equally fine or is it too impregnating on the cashmere?
3- the piano needs a light tuning and I will attempt it using the ENTROPIA software program; the tuning pins have square heads with the 6.5 mm side at the end:
WHAT WRENCH IS NEEDED? I have seen several Chinese ones on Amazon but I cannot understand if the diameters are correct.
Thanks a million to anyone who will answer me and advise me on the various points!
Bostik never! Vinavil instead! Ideal hot glue in bain-marie beads.!!!
no lubricant for keyboard pins!!!!!!!!!!!! Instead, an expert person must replace the Cashmere if dirty and the pins if oxidized
No lubricant for the pins!!!!!!!!! Even Ballistol is no good!!! The pins must be replaced and the bushing reamed with straight reamers and increasing the pin size!!!!!
Naturally, DIY on these points is risky if one does not have a certain amount of experience
My tutorials that illustrate how the mechanics work and explain intervention techniques (a journey inside the piano) do not intend to encourage the beginner or DIY in intervening on the mechanics, but to make the pianist aware of which problems cause their dissatisfaction with the instrument and to foster a better dialogue with the technician
I imagine that a glue like Titebond Franklin could work for performing the gluing mentioned above.
A clarification: you advise not to use any lubricant for the keyboard pins, but when dismantling the keyboard I found traces of white powder (similar to talcum)... could it be powdered Teflon? Would it be useful?
Teflon micropowder OK!!!! Without exaggeration. It is absolutely not hygroscopic!!! The opposite is true for talcum powder: BANNED!!! highly hygroscopic. If it is talcum, clean everything!!!!!
Anyway, the microteflon is an additional component in a minimal amount. The gaskets and pins must slide on their own!
