First pass is too deep
I have not noticed this before but in this project it was my first attempt at milling Aluminum. The plate is 1/8" thick (0.125) and 18"x18" I set everything up to use Virtual Zero. I'm running V-Carve Pro 9.5
I set it to a maximum cut depth of 0.030 and the end mill set to maximum pass depth of 0.010 for a total of 3 passes. See pics
The problem is the first pass was 0.035! The next 2 passes were correct at 0.010 each. I ended up with 0.055 total depth. The total depth I was OK with because I had enough material thickness to work with but the initial pass of 0.035 caused the end mill to "Dig" in or be pulled down into the material which caused a few imperfections in the sign. I checked a few tutorials and they all have the Start Depth at 0.0. And I did set it up to use the material surface for starting point.
Any ideas why my first pass is going way beyond the set point? What am I missing?
CNC Shark HD4 Extended. Water cooled Spindle. VCarve Pro 10
Maker of many chips!
Last edited by OCEdesigns; 05-03-2019 at 07:57 AM.