I am VERY new to CNC and Maslow… I have assembled my frame, and I am working on cutting out my “final sled” but I wanted to one-up myself by cutting the sled, and then doubling back with a round off bit. However, I realize now as a noob, this is way more difficult than I had originally anticipated. It is a skill I’d like to learn (if possible) for future projects.
- Rigid R2202
- Diablo 1/4" Up-Spiral Bit
** (1/4" dia, 3/4" carbide, 2 cutters, 1/4" shank, 2" length)
- Diablo 1/4" Radius Rounding Over Bit
** (1-1/8" dia, 5/8" bearing, 1/2" carbide, 4 cutters, 1/4" shank, 2-3/16" length)
Using the 1/4" Up Spiral bit, I will cut the outside profile (of the actual sled), then cut two more inside profile cuts on the outside of the sled, giving me a wide enough channel to set the rounding over bit with bearing down into the channel. Then I would execute a cut using outside profile using a 1.7mm offset from the first outside profile cut. In theory, this will give me a nice rounded off sled without having to get router table, or sand, etc.
Here is where I am having trouble, in general actually. So I took the SVG for the original sled, and load it into MakeCam, export the Gcode for the first set of cuts, and all that goes well. Then I load the SVG a second time and trim out everything but the final rounding bit cut. Export the Gcode.
I open GroundControl, and load the first set of cuts, and run the cuts and all goes well. Once the cuts are done, I hit the home button (the little house) and the bit is drawn up, moves to the home position. I stop the motor, slip the motor out off the sled, switch bits. I do a Z-axis adjustment. Then I load the new Gcode (for the rounding bit). The image is way off the screen. I hit “define home” to bring it back to where I am cutting. Then I hit play. However, it appears that the home may have repositioned, or my math is off, because the rounding bit doens’t line up as expected.
Do I have the order of operations correct?
- Start GroundControl
- load Gcode (for first cuts)
- Move sled to preferred starting position
- Hit “define home”
- Run the cuts
- When cuts end click “Home” button
- Stop motor, replace bit
- Adjust Z-axis
- Clear Gcode
- Load Gcode (for second cut)
- Hit “home” button
- Hit “define home” button
- Run the cuts
Is there a write up I just haven’t found that explains how to do this type of work better?
Am I expecting too much from the Maslow system?
I want to add how very impressed I am with the CNC, and all my neighbors keep coming walking by in awe of the machine. Good work guys!