I have rebuilt a number of violins, and whenever I replace pegs, I have to fit them by using the peg shaper, shown in the first link you gave, thus removing the precisely machine-turned surface. Commercial pegs are always oversized to allow for this reduction. You can't count on being able to ream the peg holes arbitrarily larger, because you have to preserve the structural integrity of the violin's peg box.
So there may not be much point in trying to get a very accurate taper and smooth finish on your new pegs, when you are going to have to shave that off when you install them. Maybe put the effort into figuring out how to CNC machine the peg's knob, leaving the shaft roughly cut or even straight, for hand finishing with the shaper. christopherpurc...@mac.com > From: Kirk Wallace <kwall...@wallacecompany.com> > Subject: [Emc-users] OT: Single Pointing Wood? > Date: 7September, 2011 6:03:05 PM ADT > To: "Enhanced Machine Controller (EMC)" <emc-users@lists.sourceforge.net> > Reply-To: "Enhanced Machine Controller \(EMC\)" > <emc-users@lists.sourceforge.net> > > > I need to make some violin pegs and I have very little experience with > wood turning. One option is to work the wood the same as I would with > metal, but I don't think wood single points very well. I have a wood > lathe I could use, but I want the peg taper to be very accurate and I'm > inclined to not try the taper with a gouge by hand. Plus my CNC lathe > would make the project much shorter (maybe). So, what would be the best > way to CNC wood pegs? > > This link shows how the taper is normally trimmed, but this also seems > like a poor way of cutting wood: > http://hmi.homewood.net/pegjob/ > > As a side note, I made a peg hole reamer by turning a taper on some > unknown piece of steel rod (in other words, probably soft) on my manual > lathe, rotated the cutter so the top faced the spindle (brake locked), > then cranked the compound (still canted at 1 degree) to use the compound > as a shaper. I cut two shallow flutes parallel to the rod axis. The > shallow flutes clogged quickly with wood shavings, but I was able to > ream four holes and fit three pegs. The problem is, I can't find the > fourth, and I can't do my movement #3: > http://www.youtube.com/watch?v=JdYGmPH9fcs > > without it. I don't have a video of my performance, so that's not me in > the above link. I'll most likely find the missing peg after I make a new > peg set. > > Kirk Wallace > http://www.wallacecompany.com/machine_shop/ > http://www.wallacecompany.com/E45/index.html > California, USA ------------------------------------------------------------------------------ Using storage to extend the benefits of virtualization and iSCSI Virtualization increases hardware utilization and delivers a new level of agility. Learn what those decisions are and how to modernize your storage and backup environments for virtualization. http://www.accelacomm.com/jaw/sfnl/114/51434361/ _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
