After consulting with the two luthiers in the nearby area (the first of which "defrets" by grinding down the fret to the tang, the second who refuses to do defrets at all, citing "it weakens the neck" ) I've decided to take the plunge and do it myself. I've researched various methods online by both amateurs and professional websites, traded e-mails with a friend's bassist who's done the same, and I'm confident I can do a more-than-adequate job given the proper tools which I'm prepared to spend the money on. ...until one problem reared it's ugly head. I'd like to use a radiused sanding block to make sure I don't leave any humps or flat spots after trimming down the inlaid lines, but the bass (a Yamaha RBX 775) is far-east made, and therefore has a radius measured in millimeters and not inches due to that newfangled metric system. I've tried searching online, but cannot find any radiused sanding blocks like the ones Stewart-MacDonald carries but metric. I'm looking for a 600 mm radius, which coverts to 23.6/23 & 5/8ths. Does anyone have any suggestions as to a fairly cheap and easy solution to this problem? I have friends overseas looking, but they've had no luck as well in finding anything. Hell, if anyone reading this has the capability of fabricating one, I'd be willing to pay a fair fee (akin to StewMac's product plus a little "thank you") and shipping. Thanks in advance for whatever advice you can provide.