Order of layers on boards #167
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CapnKernel
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Can we talk about the order of PCB layers in KiCanvas?
Let's assume we have a preset active, such as "Front". KiCanvas' layer order is
Cu,Adhes,Paste,SilkS,Mask,Edge.Cuts,CrtYdandFab. These don't really align with what happens in real life, and it's difficult to see things like the silkscreen and paste, because they are hidden by the copper. Ok we can turn off copper, but then we don't see how things like the mask and paste and silkscreen relate to the copper.I lived in Shenzhen for three years, and reviewed gerber files for a living. I have done many many thousands of them. I'd start with the board edges, then the plated and unplated drills, then check the top side, then the bottom.
To review the top, I'd just turn on edges and drills, then turn on the copper, then the mask, then silk, then paste. This reflects the real-life order of layers on the board from inside to outside. Then I'd turn off all the top layers and do the same for the bottom, starting with the copper. Most of the time I used gerbv. I had the layers set up in gerbv so I could just arrow-then-space through the layer list.
For an apples-to-apples comparison, here is KiCanvas (left) and gerbv (right) side by side, with gerbv's colours and layer order set to be the same as KiCanvas:
(The gerbv view is not the same as KiCanvas, but close enough for this demonstration)
What do you think of altering the layer order in KiCanvas? I suggest
Edge.Cuts,Fab,CrtYd,Paste,Adhes,SilkS,Mask, thenCu. Here's gerbv (right) showing this different order (KiCanvas still on the left)With this info I could tell my customer, "Oh, C6's silk is too big, and you probably want to reduce the paste quantity on your pads". I can't easily see this with KiCanvas.
This also matches closely to the order on the "board setup" dialog inside of KiCad:
I have hacked up a different layer arrangement for KiCanvas. This board now looks thus:
As well as the rendering being different, the layer orders on the right are different, and the action of the Front and Back presets are (to me) more logical. I can click the none preset, then click one at a time up the eyeballs of the front layers or the back layers, and see a view of the board that (again to me) looks more useful.
Thoughts?
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