Converting a Prusa i3 3D printer to a laser April 29, 2017 11:17PM |
Registered: 9 years ago Posts: 26 |
Re: Converting a Prusa i3 3D printer to a laser May 01, 2017 02:46AM |
Registered: 9 years ago Posts: 5,232 |
snip from grbl-wiki $110, $111 and $112 – [X,Y,Z] Max rate, mm/min This sets the maximum rate each axis can move. Whenever Grbl plans a move, it checks whether or not the move causes any one of these individual axes to exceed their max rate. If so, it'll slow down the motion to ensure none of the axes exceed their max rate limits. This means that each axis has its own independent speed, which is extremely useful for limiting the typically slower Z-axis. The simplest way to determine these values is to test each axis one at a time by slowly increasing max rate settings and moving it. For example, to test the X-axis, send Grbl something like G0 X50 with enough travel distance so that the axis accelerates to its max speed. You'll know you've hit the max rate threshold when your steppers stall. It'll make a bit of noise, but shouldn't hurt your motors. Enter a setting a 10-20% below this value, so you can account for wear, friction, and the mass of your workpiece/tool. Then, repeat for your other axes. NOTE: This max rate setting also sets the G0 seek rates.
Re: Converting a Prusa i3 3D printer to a laser May 01, 2017 11:00AM |
Registered: 9 years ago Posts: 26 |