EEVblog #1327 - 3 Ways to FAIL at PCB Manufacture

[EEVblog]

Three ways to get your PCB design rejected by your PCB manufacturer.
1) Imperial/Metric conversion
2) Unexpected Trace/Space specifications
3) Goofing the Gerber resolution.

[BrianHG]

Arrrrrrggggg, a magical floating head which grows and shrinks depending on the speakers intonation... 

BTW, when placing or measuring objects in Altium, pressing the SHIFT or CTRL while moving the mouse enables/disables snap to edge, grid, or electrical grid.  I wonder if it is the same in Kicad.

[redshift]

I like the floating Dave head! Why waste the screen real estate on an entire rectangle?

PS: You forgot to include the forum link in the video description.

[EEVblog]

BTW, when placing or measuring objects in Altium, pressing the SHIFT or CTRL while moving the mouse enables/disables snap to edge, grid, or electrical grid.  I wonder if it is the same in Kicad.

ALT works in KiCAD PCB but not in the KiCAD gerber viewer

[Tek_TDS220]

The topic is great, very informative.  As I've discovered, there are a lot of sneaky specs that can cause your boards to be rejected.

Regarding the floating head, I like it.  However, I found myself closing my door while I was watching.

[jgruszynski]

Great video.

We have a very similar but slightly more complicated design rule situation in IC design.

[aheid]

Floating head? How about some green facepaint next time. I want floating eyes and mouth 

Nice video, had completely missed the gerber formatting options.

[c64]

Half of these clearance rules (like pad to pad) don't even exist on the JLC chinese website. Maybe they are just somebody's screw-up?
https://www.jlc.com/portal/vtechnology.html

[thm_w]

Half of these clearance rules (like pad to pad) don't even exist on the JLC chinese website. Maybe they are just somebody's screw-up?
https://www.jlc.com/portal/vtechnology.html

Most of those measurements aren't even in metric as well.
Stuff like pad to pad, for sure must be a recommendation and not an actual requirement, they will easily make stuff closer than that. Same with via to track vs PTH to track, literally the same thing but two numbers given.

Maybe some of these restrictions they've added due to the large volume of orders and issues they ran into. The JLC china site works completely differently to the english version, so, could be different teams, etc.

[VK3DRB]

Some of these manufacturers in Asia don't even bother stating their capabilities in metric, which I find annoying because there are only three other countries left in the world that still use imperial measurements mostly: Liberia and Myanmar and the USA. Seems like Me and Ma - and cousin Gerber Goober - find this new fang dangled metric as confusin' as playing a banjo upside down .

But I still use 0201, 0402, 0603, 0805 as definitions of component sizes because that is the common language used everywhere because there also is too much crossover between some imperial and some metric sizes. Also, when I say "mil", I mean millimetres. Thou is OK for imperial measurements, but not "mil" as it only causes confusion. I still am forced to use an imperial grid for schematics because most schematic symbols were created to an imperial grid. Nothing worse that when a symbol does not line up to a grid (2.50mm c.f. 2.54mm). Really Altium and the like should abandon measurements for grids and just use "units" as they are resized to A4 or A3 anyway when printing anyway.

I remember in maths, rather that using pi^d/2 (ie: pi radians divided by 2), texts used pi/2 for 90 degrees which can cause confusion in some contexts.

[VK3DRB]

Some of these manufacturers in Asia don't even bother stating their capabilities in metric, which I find annoying because there are only three other countries left in the world that still use imperial measurements mostly: Liberia and Myanmar and the USA. Seems like Me and Ma - and cousin Gerber Goober - find this new fang dangled metric as confusin' as playing a banjo upside down .

But I still use 0201, 0402, 0603, 0805 as definitions of component sizes as that is the common language used everywhere because there also is too much crossover between some imperial and some metric sizes. Also, when I say "mil", I mean millimetres. Thou is OK for imperial measurements, but not "mil" as it only causes confusion. I still am forced to use an imperial grid for schematics because most schematic symbols were created to an imperial grid. Nothing worse that when a symbol does not line up to a grid (2.50mm c.f. 2.54mm). Really Altium and the like should abandon measurements for grids and just use "units" becasue they are resized to A4 or A3 when printing anyway.

I remember in maths, rather that using pi^d/2 (ie: pi radians divided by 2), texts used pi/2 for 90 degrees which can cause confusion in some contexts.

[drcheap]

Am I the only one who's first thought, when I saw him moving his floating head around, was ... Mr. Sparkle!