Bobcad beginners problem in Mach...

[adryan]

Perhaps someone can help me out,

I'm trying the demo version of BobcadV20 and get a error when importing the NC file into Mach3. I'm using the Mach2 mill postprocessor
The file is just a simple code of a rectangle with a radius.

N1 G00Z2.54
N2 G00X101.5Y2.
N3 G01Z-5.08 F15.
N4 G01Y46. F20.
N5 G03X-3.5Y3.5I-3.5J0.
N6 G01X-96.
N7 G03X-3.5Y-3.5I0.J-3.5
N8 G01Y-46.
N9 G03X3.5Y-3.5I3.5J0.
N10 G01X96.
N11 G03X3.5Y3.5I0.J3.5
N12 G00Z5.08

whatever I try I get the message: radius to end of arc differs from radius to start on Line number #4.

When I try another shape..I get the same message on another line number

Thanx
Adryan

[screensnot]

Bobcad is outputting in incremental mode. And it looks like it expects your machine to be in metric mode (unless your machine is very large).

Add G91 to N1 and you should get a rectangle (N1 G91G00Z2.54).

The center of the rectangle will be X+50.0 and Y+25.0 from where the center of your tool is when you start the program. The rectangle will be cut 2.54 deep from where the tool is when the program is started.

If you are cutting inside of a pocket, the pocket will be 103.0 + tool dia. wide x 53.0 + tool dia. tall. It will have radii in the corners that are 3.5 + tool radius.

If you are cutting around a boss, the boss will be 103.0 - tool dia. wide x 53.0 - tool dia. tall. The boss will have radii on the corners that are 3.5 - tool radius.

[ger21]

In Mach3, change the IJ mode. It's under Config>State.

[adryan]

I changed the mode from absolute to incremental in Mach, and it works great now,

thanxs!
Adryan