Problem with how cut 3D breaks up sections on finishing

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Problem with how cut 3D breaks up sections on finishing

Postby Louis C » Thu Feb 04, 2016 11:30 pm

Was curious if there was a way to set Cut 3D to simply carve the entire 3D project from top to bottom (or vice versa) because as the pathing is created, when it jumps to do 1 section, then backtracks to do another section, it often leaves a deeper cut (usually just on the first path after a move) that is often very noticeable and difficult to remove, adding a lot of extra time to a project. I know it probably picks doing these random sections to be more efficient and faster, but I'd rather take a little longer to carve with it simply moving from top to bottom instead of doing the random jumps that often lead to extra clean up.

Hope all that makes sense.

Thanks in advance for any advice on solving this problem!

Louis C
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Re: Problem with how cut 3D breaks up sections on finishing

Postby Rcnewcomb » Thu Feb 04, 2016 11:55 pm

it often leaves a deeper cut (usually just on the first path after a move) that is often very noticeable and difficult to remove

If you examine the machine code your will see that Cut3D is not telling the machine to cut deeper on the first pass.
Example G Code
Code: Select all
X12.6786Y3.2780Z-0.0578
X12.6854Y3.2848Z-0.0644
X12.6921Y3.2916Z-0.0726
X12.6989Y3.2984
G0Z0.2000
G0X10.1695Y5.0116
G1Z-0.0648F60.0
G1X10.1627Y5.0048Z-0.0586F120.0
X10.1424Y4.9844Z-0.0480
X10.1356Y4.9777Z-0.0451
X10.1220Y4.9641Z-0.0414


For a raster toolpath unless you are machining objects like circles or squares there will be spots where the machine has to lift the bit and move to another area.

Look at the sample leaf for an example.

Image


What you are seeing is likely due to material movement and/or bit/machine deflection.
    A roughing pass will help.
    Using the shortest possible bit will help.
    Ensuring that everything on the CNC machine is tight will help.
- Randall Newcomb
10 fingers in, 10 fingers out - another good day in the shop
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