[balsaman]

Hi,

I have read all about slow feedrate issues when cutting arcs. I have experienced this and can live with it until we have constant velocity contouring (ver 4?). I am also experiencing the oposite. Recently, when cutting some heavy aluminum plate, my machine was cutting happily at 3" a minute along a nice straight line. I came along to an arc, where the machine whipped around it at what seemed like the max start speed? which is much higher than the feed rate I specified. As you can imagine, this can be interesting to watch. No damage was done, but my poor home made machine was flexing nicely. The second time I tried it, I broke an endmill. After I was done, I tried a dry run and was ready with my feedrate overide when I came to the arc. No effect. Anyone else experience this?

Eric