> The first couple of cuts I was using a chord length of about 100mm, > meaning that my g-code statements around the leading edge where about > 0.1mm apart or less, which caused the feedrate to slow down for some > reason, which caused too much heat to build up in the leading edge.
If you use G64 P0.1 the trajectory planner *should* automatically blend out the unnecessary segments and give you full speed over the entire shape. > I am using 20ga nichrome-80 wire (about 2.5 Ohms/ft) and found so far > that using about 2.2 amps of current and a feedrate of about 150mm/min > gave pretty good results. Thanks for the data. Stuff like this can save others lots of time. > I am using standard hardware store threaded rod, with the standard > coupler nuts. Any idea what the best way to lubricate them is? I > bought some lithium grease, but have not applied it yet. You might try running a die over the threads to knock off the high spots. Also, you can make pretty serviceable plastic nuts with a tap and some cutting boards. You can even make anti-backlash nuts with this method. Brass works well too. High-moly EP "extreme pressure" grease (lithium grease with molybdenum sulfide added) is the best for metal-metal contact. Lithium should work well for plastic/metal but I think no grease would be the best, since its kinda messy. Most binding problems are caused by misalignment anyway. > Next thing to do is to charactarize the kerf width and try some tapered > sections. I've heard that the kerf can be higher on the top side of a tapered cut since heat rises. This might confuse your measurements. HTH -fenn ------------------------------------------------------------------------- This SF.net email is sponsored by: Splunk Inc. Still grepping through log files to find problems? Stop. Now Search log events and configuration files using AJAX and a browser. Download your FREE copy of Splunk now >> http://get.splunk.com/ _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
