On Tue, Nov 18, 2014 at 9:26 AM, Gene Heskett <[email protected]> wrote:
> On Tuesday 18 November 2014 08:14:54 Mark Wendt did opine > And Gene did reply: > > On Tue, Nov 18, 2014 at 7:42 AM, andy pugh <[email protected]> wrote: > > > On 18 November 2014 12:26, Mark Wendt <[email protected]> wrote: > > > > Ah, then, I guess it may or may not work for me. My table is 55" > > > > long, > > > > > > and > > > > > > > my G Code is written for a Z station for every inch of X station. > > > > Back > > > > > > to > > > > > > > the probekins I guess. > > > > > > I think lincurve will probably work better in your case. Probekins is > > > likely to be confused by your lack of Y. > > > 16 points lets you define quite a complicated shape. > > > > > > -- > > > atp > > > If you can't fix it, you don't own it. > > > http://www.ifixit.com/Manifesto > > > > Oops, I used incorrect coding. Should be: > > > > setp x1 v1 > > setp y1 v2 > > > > If my Y doesn't change the length of the X axis, would the "v" number > > on the y line not change, or would it equal the number for the "x" > > line? > > > > Sorry I'm being dense this morning. Too much blood in my caffeine > > stream. ;-) > > "Y" is its output, and has zilch to do with a Y axis you do not have. > X is its input from the motion x axis position, and the Y is the output > correction to sum with the z value to get the profile you need. > Yeah, I'm getting that now, after both Andy and Viesturs explained that to me. ;-) > > If there is, for instance, a straight line taper from x=0 to x=11", and > the machine has a straight line error between those 2 point, measuring at > X+011.00 where the accumulated error is 7 thou then you would setp > > setp x0 value zero > setp y0 value zero > setp x1 11 > setp y1 -0.011 and it should make a straight cut > > But then if your ideal profile shrinks by 23 thou in the next inch you > would > setp x2 12 > setp y2 -0.033 > > There is nothing stopping you from moving the x1 point to anyplace between > the x0 and x2 points. Ditto for x2, it can be anyplace between x1 and x3. > etc etc. > Gotcha. > > Using halscope to trace what you are doing, I would be surprised if when > the halscope trace looks good, your next strip you cut would be a lot more > accurate, needing much less planing or sanding to get to the desired > profile. Maybe even zero if the blades are sharp enough. When I am using a > fresh ATBF blade in my table saw, I can get a decent enough cut that I can > immediately do a 42" glueup, edge to edge without any recourse to my > Bailey #7 or the jointer to get a perfect glue joint that holds for many > years. No biscuits in it, just edge glued. > There's no planing or sanding after the strip is cut. They are ready to be glued up. What I'm striving for here is for the cut strip to match exactly the calculated cross-sectional dimensions at each inch. > > One thing about bamboo I both like and hate is that when pushed, it will > over time take that pushed shape and exert little or no back force. Which > is why a bamboo pole needs to be hung from its tip eyelet to store. Lean > it against the wall, and in a week you could use it for a recurved bow. > Never, ever hang a bamboo rod by the tip. When not in use, the rod should be disassembled and stored in the rod bag inside the rod tube. Laying it against the wall is as bad, if not worse than hanging it by the tip. Heat treating the bamboo before cutting into the strips helps guard against getting a "set" in the rod. > The year old bamboo stick swings totally different from a brand new one > because of this. The old one it seems, always has the better swing and > "feel". And no one has ever translated that good bamboo swing & feel into > fiberglass at all well. Carbon fiber is 10x worse IMO. Way the hell too > stiff to work my way even with an 8 or 9 weight fwd line. > Fiberglass is closer in action to bamboo than carbon fiber. Carbon fiber is an abomination. ;-) > > Cheers, Gene Heskett > Cheers, Mark ------------------------------------------------------------------------------ Download BIRT iHub F-Type - The Free Enterprise-Grade BIRT Server from Actuate! Instantly Supercharge Your Business Reports and Dashboards with Interactivity, Sharing, Native Excel Exports, App Integration & more Get technology previously reserved for billion-dollar corporations, FREE http://pubads.g.doubleclick.net/gampad/clk?id=157005751&iu=/4140/ostg.clktrk _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
