No luck sourcing it from China?

planar diaphragms gotta be thin

not yet

though i havent been looking for long

im already using 20 micron kapton film for the actual membrane part

the aluminium is just the trace

and ill etch with ferric chloride

Found a 2 ton roll for $2500 for you.

kek

huh this might be good

https://www.alibaba.com/product-detail/20-30-micron-in-thickness-pharmaceutical_60239505321.html

Nice. ~Twice as much as you need. Seems quite cheap too.

yeah

i mean its aluminium foil

itd be cheap no matter what

unless it was like >5 micron or some crazy level of thin

shipping might be the real killer tho

havent used alibaba before so eh

how the fuck do i find shipping price lol

I guess you have to actually work that out with the supplier.

eugh

or use a taobao middleman

like taobaoring

do taobao middlemen also do alibaba?

Aren't they the same?

I think they might

Both owned by Jack Ma

Same thing

Alibaba's just the company

TaoBao's the website

naw both are websites

alibaba is the western focused one

taobao is CHAINA

alibaba came firstr

then a lot of people wanted to get one item from them

and they're like

why dont we just open up another website

to just sell one item

and aliexpress was born

no

http://i.4cdn.org/v/1487421822792.png