Spikes

[eyal0]

No description provided.

[coveralls]

Coverage increased (+0.2%) to 68.369% when pulling 328489b on eyal0:spikes into df9db6c on pcb2gcode:master.

[eyal0]

Spikes is a funny name for a feature that will fill in gaps in your milling when you are using multiple milling bits.

Here's the problem: Say you have a pretty big milling bit trying to get into a tight corner and you want to have more isolation than your bit will provide, so you need to make two passes:

The trace is in dark green. You can see that the first pass wasn't able to tuck into the corner. That makes sense because the bit is too large to fit in there. The project specified 10% overlap so the next pass is supposed to overlap by 10%, and it does! But look at the corner. Even though the first pass was unable to tuck into there, the second pass should be able to do!

The way that passes are made, by enlarging the ring around the trace, is a problem in these tight corners because it makes a pass that guarantees a 10% overlap or less. What we really want is a 10% overlap or more. That's where the spikes come in. When an inside corner is detected, a little bit of milling is added to clear out the corner. It sticks out until it is within 10% overlap of that inside corner, as configured.

Notice that only the inside corner needs a spike. For voronoi passes and thermals, the rule is reversed.