Very interesting look into a Chinese PCB fab by StrangeParts - Page 1
Forum section: electronics / general

author: Macbeth
author_rank: Super Contributor
timestamp: June 13, 2018, 01:46:32 am
content: I have to admit I am still an old fart of the Big Clive era and make my PCB's with all the ghastly chemicals, and tools, and spare FR4, (but not that PCB guillotine - so jealous).My FeCl3 is like a Spaniards sherry bodega. It really needs to be disposed of in some kind of hazardous waste at some point. So I keep recycling it instead.I know once I get a stack of PCB's from China I will be addicted like crack, but in the meantime I am amazed I can make double sided boards with household chemicals and yet all my clothes and work surfaces are stained in a sick brown and orange colour.

author: bitseeker
author_rank: Super Contributor
timestamp: June 13, 2018, 04:23:26 am
content: That was a cool tour. JLC sure is doing a lot to build mindshare.

author: ar__systems
author_rank: Frequent Contributor
timestamp: June 13, 2018, 10:58:23 am
content: Looks interesting, but I can't watch it. The guy annoys the hell out of me.

author: Macbeth
author_rank: Super Contributor
timestamp: June 13, 2018, 07:06:39 pm
content: You just have to ignore the StrangeWarts and maybe ignore the ginger beard, but he's a nice guy. His content is not his face.I imagine with some youtube income and a Chinese wart remover he will become far more presentable. Have you noticed how many youtubers now have perfect white teeth?

author: Towger
author_rank: Super Contributor
timestamp: June 13, 2018, 07:43:11 pm
content: Quote from: Macbeth on June 13, 2018, 07:06:39 pmI think we can do without another 'Dave visits the Dentist' video. :-)Dave, when is 'Dave visits the Optician' going to be released?

author: ar__systems
author_rank: Frequent Contributor
timestamp: June 13, 2018, 08:29:47 pm
content: Quote from: Macbeth on June 13, 2018, 07:06:39 pmIt's not the beard... It's his over the top excitement that gets me

author: chris_leyson
author_rank: Super Contributor
timestamp: June 13, 2018, 08:58:40 pm
content: Nice video. I couldn't see how the films were aligned for top and bottom copper and solder mask. It was all done by hand and very fast. Edit: Spotted it now, fiducals on the corners.

author: hayatepilot
author_rank: Frequent Contributor
timestamp: June 16, 2018, 08:02:03 pm
content: Very cool video.But I always wonder how they keep track of all the different board designs. I don't think JLC puts manufacturing marks on the pcbs.Before the boards are routed out it's easy because a barcode or something can be on some unused space on the board. But how do they do it after routing?

author: gowithyourself
author_rank: Contributor
timestamp: June 18, 2018, 12:15:14 pm
content: Quote from: hayatepilot on June 16, 2018, 08:02:03 pmThey do, or at least they have done so in the past. I think the serial number might only be on one of the boards though.

author: rx8pilot
author_rank: Super Contributor
timestamp: June 19, 2018, 09:55:34 pm
content: I can safely rule out PCB fab as my next business.This video was very hard to watch overall....but I really wanted to see behind the scenes. It is so hard to understand how the prices can be so low in such a complex process. It must take years to get it all dialed in and make it remotely profitable.

author: TSL
author_rank: Regular Contributor
timestamp: June 20, 2018, 03:14:48 am
content: Gota say I'm impressed. I've had a few boards made and its nice to see the end-to-end on such a large scale.

author: Richard Crowley
author_rank: Super Contributor
timestamp: June 20, 2018, 03:44:31 am
content: I was a bit surprised by the method of applying the mask and screen layers. Couldn't they simply apply using direct positive screen-print? Instead they coat the boards solid and then use photolithogaphy to image and then etch to pattern the layers.

author: gowithyourself
author_rank: Contributor
timestamp: June 20, 2018, 11:58:54 am
content: It is presumably also for the same reason they are printing the silkscreen on the prototype designs i.e. it probably doesn't make sense to make and change the silk screen for each, or every tenth, panel.Code:https://www.youtube.com/watch?v=ljOoGyCso8s&t=1180

author: coppice
author_rank: Super Contributor
timestamp: June 20, 2018, 12:32:38 pm
content: Quote from: Richard Crowley on June 20, 2018, 03:44:31 amFor volume production they silk screen print any low resolution layers, and use photolithography for the high resolution layers. For chunky boards, like a lot of power boards, people usually silk screen all the layers.