Greetings all; This is something I've not attempted before. I need to, using either a 1/2" cove router tool, or a 1/4" ball nose, do some cleanup work on around 32 little decorator pieces for the base of these cabinets I am making. The intention is to add what looks like a leather strap under tension that starts at the floor, come up the height of the baseboard, and meets the straight face just below the roundover cut, of a strip of solid mahogany biscuit jointed to the edge of a 3/4" mahogany veneered botton panel whose outer face is about 3/8" from covering the top edge of the basebaord
They are approximately 3.4" long, and 2.0625" wide, starting with 15/16" thick stock mahogany. The front or outer face already has a shallow depression of about 1/8" deep centered on that 2.0625 width by passing it over a 10" blade at about a 30 degree angle on the table saw. With the final pass made once each way so that any un-evenness in the groove is visually centered, so there could be a slight high spot in the center. NBD if so. Doing that in gcode is fairly easy, but when it reaches the top end, this curve needs to make a 90 degree turn, with about a 1/8" radius made by combining the curve as it rotates, such that the curves visual radii is carried on over and carved into the end of the piece. With the right size of drum sander, its something that could be done almost by hand, but it would take a drum sander about 8" or 9" diameter, and I don't hardly have some more of those. Not to mention that the sandpaper would be running cross-grain, leaving quite visible sanding marks. Hence the thought of using the 1/2" cemented carbide tool I have, which has already been re-sharpened and left a finish ready surface on a gunstock I made for one of my BP rifles 3 years back. But I cannot grasp how this can be done unless an xz co-ord rotation is done at the corner point, effectively turning the curve being carved in the YZ axis over so it effectively becomes a YX curve while leaving a 1/8" radius as it "turns the corner". Is this an idea that combined with the radius of the 1/2" ball nosed tool, can be made to work, getting a finish ready surface by use of a X stepover of just a few thou per Y pass? If I can do this as three moves in the X domain, a 3+" run across the length of the top, a 90 degree arc at the corner, with the corner axis being rotated to do the same curve across the end, stepping the repeat in the Y domain so that any machine marks left run with the grain, I would consider it a workable idea. But to make sure the curves matched, face and one end, it seems I'll need to rotate the co-ordinate along the Y axis, but the rotation point will also need to be adjusted according to the curve. I'll play around in the simulator with that idea, but if anyone has a better idea, head me off at the pass, please. But, the first problem is a showstopper, checking on a "G10 L2 Rdegrees" I find it can only rotate around the Z axis, and for this I need to rotate around the Y axis. So that idea is dead in the water. Work-arounds? Hopefully not a math nightmare I'd never understand... Thanks everybody. Cheers, Gene Heskett -- "There are four boxes to be used in defense of liberty: soap, ballot, jury, and ammo. Please use in that order." -Ed Howdershelt (Author) Genes Web page <http://geneslinuxbox.net:6309/gene> ------------------------------------------------------------------------------ Site24x7 APM Insight: Get Deep Visibility into Application Performance APM + Mobile APM + RUM: Monitor 3 App instances at just $35/Month Monitor end-to-end web transactions and take corrective actions now Troubleshoot faster and improve end-user experience. Signup Now! http://pubads.g.doubleclick.net/gampad/clk?id=272487151&iu=/4140 _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
