Electronics > Projects, Designs, and Technical Stuff
JLCPCB Bonus holes
TimNJ:
--- Quote from: phil from seattle on August 04, 2020, 01:36:17 am ---
--- Quote from: TimNJ on August 04, 2020, 01:10:56 am ---Since you ordered assembly service, presumably they added tooling holes to the PCB to help facilitate some assembly step(s). It's a bit unusual because (usually) these holes are placed on the side-rails of the PCB panel, not on the actual design. But for prototype assembly, unless the size of your board is large or you order a lot of them, you don't get your own panel, so they need to treat each board individually during assembly.
Ed: I should note that they could have added side rails to your design, and still put your design in a shared panel...but maybe they've decided that those rails are just wasted space on the panel, and would rather put the holes on your design. Par for the course, I guess.
--- End quote ---
Well, maybe. But I think not - it changes my ground plane, they didn't do it to the exact same gerbers in the previous order and it doesn't show up in their gerber viewer. Also, those holes are so small (look like 30 mil or so). I ordered 30 btw.
--- End quote ---
You “think not” what? Unless this is a very high performance analog or high speed digital design, I don’t see how those holes will have any impact on electrical performance. I agree I’d prefer for them to ask you your opinion first before choosing the hole location.
phil from seattle:
Do you want some fab changing your board? Yes, I agree this change is innocuous but I designed it a specific way and don't want them making decisions about it. I don't think that's at all unreasonable a position.
Mecanix:
None of my business how they do what they do, I'm literally clueless and learning along, but why aren't they not fixturing/tooling up and using customer's mounting hole(s) as opposed to modifying the layouts is rather hard to understand. Looks like there's been quite a significant amount of work in Phil's design. Last thing I'd want are my design randomly holed up :(
Not much of any issue for that $10 qfn breakout test pcb with a few leds. Not entirely sure how I'd like that for a larger project... I'd probably put 5 attorneys and 2 prosecutors on the case and cry out my hard-to-fit little usb connector lol
nuclearcat:
As nice gesture they can add automatic detection of missing tooling holes and red warning about that...
CoteRotie:
--- Quote from: phil from seattle on August 04, 2020, 02:43:14 am ---This is the first time they added the holes. thanks.
--- End quote ---
I think maybe if they find holes that are close enough to what they need they don't have to add them. If there aren't any that meet the parameters then they do. That's my current working theory anyway....
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