Footprint with edge cuts

[kid]

Hello

I am trying to make a footprint to insert a pcb (vertical) that has connectors that is welded on the motherboard, but when it comes to emptying the edge cuts layer it is not shown in the 3D viewer.

I have done two tests in case the drawings are not properly closed (in red), but I get the same result.

Possibly I am doing something wrong, I have searched the internet, I have consulted the forum and watched videos, but I do not do it correctly. Can anyone guide me on how I can do this? So far I had only made a few SMD footprints.

Thanks a lot.

Best regards.

[kid]

Hello

I have continued to test.

I have removed the emptying that I draw and now, if I see the emptying in the edge cuts layer.

I have tried to do my emptying with complete drawings, instead of using lines and arches, but I get the same result.

It is confirmed that I am doing something wrong, but I do not know the reason.

Best regards.

[eelik]

All shapes in Edge.Cuts must be fully continous and closed, even one small difference between line endpoints cause a problem. I bet there’s such problem in the “plus” shape.

There’s another problem with edge rendering in the 3D viewer. KiCad doesn’t render a hole, but thinks that a closed shape is a board outline, even though it’s pretty much self-evident that if in a footprint there’s something outside that shape, the shape itself is an inner hole. But for some reason I don’t see this in your screenshots. What KiCad version you are using?

[iabarry]

The visual representation you see when doing a FOOTPRINT is NOT an edge cut. It is a representation of what the pads and silkscreen will look like when you place them on a larger PCB. Otherwise, a pcb would be a collection of “tiles”, not continuous. Hope that makes sense.

I’ve not tried to make edge cuts in a Footprint, only on a PCB.

[BlackCoffee]

I suspect you have Line connection errors, as @eelik indicated.

One of the better, recent improvements to Kicad is having ability to make Edge-Cuts in the Footprint creation panel (thus, no longer needing to edit the Text file and manually change layers).

Works perfect - screenshots show:
• Edge-Cuts in the Footprint panel

• Footprint placed on a PCB. Naturally, the PCB, itself does not have Edge-Cuts drawn since I included them in the Footprint

• Footprint with deleted Edge-Cuts, then placed on PCB and added Circular Edge-Cut (drawn on PCB)

[mf_ibfeew]

It is confirmed that I am doing something wrong, but I do not know the reason.

+1 for eelik: not exactly closed shape.

Additionally in your last picture you created the cutout with two overlapping shapes: this is not allowed. (see arrow at my picture).

Also its not allowed to build a cutout with several shapes attached together (so they share a edge-line). picture also attached.

remark: picture upload not working - maybe later

[kid]

Hi

Thank you all for replying.

I do not think it is a problem that the polygons are not well closed, because to avoid this and that the lines were straight, I made the drawings using coordinates. I don’t know why or if I’m doing something wrong.

I have continued doing tests and eliminating the figure above and making it straight, avoiding the intersection (they really did not intersect, but I have made the simplest drawing), it comes out like this.

Possible my mistake or bug?

Surely I am doing something wrong.

Attached the data of my system.

Application: KiCad Footprint Editor (64-bit)
Version: (6.0.7), release build
Libraries:
    wxWidgets 3.1.7
    libcurl/7.83.1-DEV Schannel zlib/1.2.12
Platform: Windows 10 (build 19044), 64-bit edition, 64 bit, Little endian, wxMSW
Build Info:
    Date: Jul 26 2022 02:49:38
    wxWidgets: 3.1.7 (wchar_t,wx containers)
    Boost: 1.79.0
    OCC: 7.6.0
    Curl: 7.83.1-DEV
    ngspice: 37
    Compiler: Visual C++ 1929 without C++ ABI
Build settings:
    KICAD_USE_OCC=ON
    KICAD_SPICE=ON

Thanks!

[BlackCoffee]

Post your Files/project…

[kid]

Hello again,

I’ve removed the lines and redone them and now they seem to look good, at least in this figure.

Thanks

[kid]

Hi

Attached the component library

PCB_MODULE.kicad_mod (3.5 KB)

Thanks!

[kid]

Hi

I got it to work, I really don’t know how.

I eliminated the lines, I created them again making the points coincide (marker comes out) but it still did not appear in the 3D viewer, I have tried to modify the coordinates by hand and it has worked.

[sschaak]

I guess you connected the arcs to the line endpoints now, which wasn’t the case before. Unconnected arcs are a somewhat common problem. They look connected, but rounding errors can create tiny invisible gaps.

[eelik]

There was an endpoint mismatch, at least one.

[kid]

It was perfectly connected, but I recreated the lines and it worked, I don’t know exactly what the problem was.

[kid]

Possibly, but it all seemed right. Insert the coordinates by hand as well.

[JeffYoung]

Doesn’t DRC tell you where the mismatched points are? (Or is that a 7.0 feature?)