Where to buy 2oz copper clad - Page 1
Forum section: electronics / general

author: matthuszagh
author_rank: Frequent Contributor
timestamp: August 30, 2022, 08:22:09 pm
content: I'm trying to find a source of 2oz, double-sided copper clad. It's easy to find 1oz, but I'm having some trouble tracking down 2oz. Preferable size would be 4x6", but anything larger is fine too. Where do people source this from?I found this on ebay (https://www.ebay.com/itm/325250286253?hash=item4bba6d82ad:g:X10AAOSw4A5YxsAu), which currently seems like the best option.

author: jpanhalt
author_rank: Super Contributor
timestamp: August 30, 2022, 09:16:57 pm
content: That may well be the best option. I use to get 2 and 4 oz. from DigiKey, but it is no longer available. Everything is pre-etched PCB's from China.

author: mikeselectricstuff
author_rank: Super Contributor
timestamp: August 30, 2022, 09:58:21 pm
content: My local PCB guy told me that the 2 oz. thickness is achieved by additional plating rather than using heavier foil, so that may explain why it's hard to find as laminate for DIY boards.

author: T3sl4co1l
author_rank: Super Contributor
timestamp: August 30, 2022, 11:09:48 pm
content: That's not the best deal you'll find, I think, but yeah, stacks of cut 2oz are probably a fine way to go. Yeah, heavier is rare (nonexistent?). You could possibly plate it up yourself, but that's some work, needless to say.There was also (and I think still is?!) an... abc something or other account on eBay with big boxes of offcuts (including 2oz) for super cheap. I got some over a decade ago which is only finally nearly depleted. Oh that reminds me, I need to get more..!Tim

author: coppercone2
author_rank: Super Contributor
timestamp: August 31, 2022, 05:44:53 am
content: Quote from: mikeselectricstuff on August 30, 2022, 09:58:21 pmis this to make it easier logistically or for some structural reason? I read some stuff about differences with increased thickness PCB with rolling foil or plating. I think they said something that the surface finish can be made better with careful plating then with rolling (i.e. thick rolled copper is not as nicely burnished as thin rolled copper from the process and the PCB houses have the plating tech down to a fine art so its better for them, i.e. start on smooth paper? This was in regards to RF PCB.*actually it might be the opposite that rolled copper is generally better then ED copper

author: rob77
author_rank: Super Contributor
timestamp: August 31, 2022, 06:14:04 am
content: Quote from: coppercone2 on August 31, 2022, 05:44:53 amit's because of the manufacturing process. you start with 1 OZ, drill the holes, plate the whole thing to 2OZ or whatever you need, apply photoresist, UV through mask, develop, tin plate the traces and vias , strip photoresist then alkaline etch (tin plating is the resist during alkaline etch), strip the tin.

author: coppercone2
author_rank: Super Contributor
timestamp: August 31, 2022, 06:24:27 am
content: I think they are slightly more prone to cracking based on random research I have been doing

author: ksjh
author_rank: Regular Contributor
timestamp: August 31, 2022, 06:51:43 am
content: Well, in Germany, I would suggest Bungard Elektronik:https://shop.bungard.de/index.php/de/basismaterial/leiterplatten/basismaterial-fr4-ohne-fotoschicht-510x1150x1,5-70-70-detailThey even sell double sided 3 oz. PCB material:https://shop.bungard.de/index.php/de/basismaterial/leiterplatten/basismaterial-fr4-ohne-fotoschicht-510x1150x1,5-105-105-detail

author: mikeselectricstuff
author_rank: Super Contributor
timestamp: August 31, 2022, 09:16:23 am
content: Quote from: coppercone2 on August 31, 2022, 05:44:53 amMaybe both, but logistics-wise it saves having to stock multiple materials, and the PCB house will already have the facility to do the plating

author: langwadt
author_rank: Super Contributor
timestamp: August 31, 2022, 09:21:59 am
content: checked how muhc it'll cost to just get a "blank" 2oz board made by the usual pcb manufacturers?