Hi Terry I have found that the better quality of bushing felt cuts much cleaner.My preference is from Fletcher and Newman .Poorer quality felt is not as solid feeling .I have used a pointed Exacto knife and after sharpening on a diamond sharpening strip I give the blade a stroke on 100 grit emery strip,just to give it a little of a sawtooth effect.It works for me. Murray ----- Original Message ----- From: "Farrell" <mfarrel2@tampabay.rr.com> To: <pianotech@ptg.org> Sent: Saturday, January 12, 2002 1:36 PM Subject: Re: Key Bushing Mortises > Thanks to all for their thoughts on my key bushing mortise dilemma. I took > my router, set it up on a couple blocks, slide the up-side-down key under > router and rout out the area by eye. I'd be curious how someone has made a > jig to center the grinding on the mortise. For this job, the eye method will > be fine. > > One thing I have found and had not seen mentioned by anyone when doing > bushings ala Spurlock method: When I have used Bill Spurlock's razor knife, > I find it works OK, but does tend to pull the bushing a bit out of position. > I tried my rotary felt cutter (from Pianotek) and it works awsome. Cuts the > felt right where you want it and does not move it a bit. > > Terry Farrell > > ----- Original Message ----- > From: "Murray Seminuk" <seminukm@cadvision.com> > To: <pianotech@ptg.org> > Sent: Friday, January 11, 2002 5:00 PM > Subject: Re: Key Bushing Mortises > > > > Hi Terry > > Terry I have a jig to router mortises much like the way Yamaha keys are > > done.Straight across the whole keybottom.You only have to remove enough > wood > > to accomodate the compressed cloth .Make sure the mortise is centred and > > the same width as the cauls that you are using.In doing this the cloth > will > > not have an effect on the touch of the instrument. > > > > Murray > > ----- Original Message ----- > > From: "Farrell" <mfarrel2@tampabay.rr.com> > > To: <pianotech@ptg.org> > > Sent: Friday, January 11, 2002 10:55 AM > > Subject: Key Bushing Mortises > > > > > > > I am rebushing keys from an older spinet. The mortises on the front rail > > do > > > not have regular little recessed areas on each side of the mortise for > the > > > little flap of bushing cloth that is typically left over the edge (on a > > > plane with the bottom of the key). All other keys I have rebushed or > have > > > had rebushed had a nice little recessed area next to the mortise to > > > accommodate the left over flap. The old bushings from these keys had the > > > little flap, but the flaps were irregular in that some were partly > > submerged > > > in a crude recess, some were not submerged and stuck out below the > bottom > > of > > > the key, etc., i.e. a real mess. My experience with this arrangement is > > that > > > it is difficult to get nice consistent dip with an irregular bottom to > the > > > key. > > > > > > So, what to do. If this were my piano for life, I would rout out or > chisel > > > out the proper recess. This is not my piano, but I do want to have flat > > key > > > bottoms. Can I cut the bushings at the key bottom and not have any > flap - > > > much like many center rail bushings are cut? That would certainly be the > > > easiest solution, assuming I would get proper performance (I don't see > why > > > this would not work - or is it too easy to damage the bushing when > setting > > > the key onto the pin?). If that is not a good idea, can someone suggest > > the > > > easiest method of making the little recess - I prefer not to make a > career > > > out of this set of keys, but I do want to do a decent job. Thanks for > any > > > ideas. > > > > > > Terry Farrell > > > > > > > > > > > > > > >
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