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Electronics => Manufacturing & Assembly => Topic started by: dino on March 03, 2018, 08:06:22 pm

Title: Countersunk holes on PCB
Post by: dino on March 03, 2018, 08:06:22 pm

Hi all,

I'm making an enclosure cover from FR4 with black soldermask, and it would be great if I could mount it using countersunk screws.

Does anybody know a PCB manufacturer that can make a PCB with ~2.6mm countersunk holes? (for M2.3 screws)
Preferably in Shenzhen.

Title: Re: Countersunk holes on PCB
Post by: IconicPCB on March 05, 2018, 06:37:58 am

Dino.

Poshalji mi gerber/dxf.
Ja proizvodim shtampu u prototipnoj izradnji.

Proces proizvodnje se zasniva na mehanichkoj obradi bakra.
Zenkvane rupe nisu problem.

Title: Re: Countersunk holes on PCB
Post by: Jeroen3 on March 05, 2018, 07:34:00 am

Eurocircuits can do this. (https://www.eurocircuits.com/chamfered-mechanical-holes-or-countersunk-holes/)

Title: Re: Countersunk holes on PCB
Post by: noras on March 05, 2018, 07:48:24 am

Some manufacturers can do in Shenzhen! :)

Title: Re: Countersunk holes on PCB
Post by: dino on March 08, 2018, 09:05:38 pm

Quote from: IconicPCB on March 05, 2018, 06:37:58 am

Dino.

Poshalji mi gerber/dxf.
Ja proizvodim shtampu u prototipnoj izradnji.

Proces proizvodnje se zasniva na mehanichkoj obradi bakra.
Zenkvane rupe nisu problem.

Hvala na ponudi, treba mi veca kolicina, ENIG + mat crn soldermask, i osetljiv sam na cenu, pretpostavljam da ti to nije interesantno.

Quote from: Jeroen3 on March 05, 2018, 07:34:00 am

Eurocircuits can do this. (https://www.eurocircuits.com/chamfered-mechanical-holes-or-countersunk-holes/)

Quote from: noras on March 05, 2018, 07:48:24 am

Some manufacturers can do in Shenzhen! :)

So far I found PCBWay in Shenzhen, if you insert countersunk holes, price is raised by more than two times at >100pcs.
My guess is that Eurocircuits is similar.

Title: Re: Countersunk holes on PCB
Post by: IconicPCB on March 08, 2018, 09:25:52 pm

Pozlatu ne radimo.

Nudimo samo srebro.
Razlog je kojekakva opasna i zakonom regulisana hemija koja se koristi u prpizvodnji pozlate.

Svi smo osetljivi na cenu i mi koji pokushavamo da se hvatamo u koshtac sa kineskim cenama znamo koliko shta koshta.

A ti ako hocesh poshalji informaciju i mi cemo ti odgovoriti sa ponudom.

Mogu da t ikazhem da imash relativno dobrog proizvodjacha  EIPCB u Nishu a isto tako i jednu manju radionicu to negde u Novom Sadu cini mi se.

Ako je tvoj zahtev relativno jednostavan i u pitanju je samo oblik i vrsta rupe to nebi trebalo da predstavlja neki narochit problem u proizvodnji,

Manufacturing seeks places with cheap labor cost and weak currency.

Soon enough China will price itself out of the game  and some other country ( Vietnam for example ) will be the new what ever.

Title: Re: Countersunk holes on PCB
Post by: DerekG on March 09, 2018, 01:19:28 am

Quote from: dino on March 03, 2018, 08:06:22 pm

I'm making an enclosure cover from FR4 with black soldermask, and it would be great if I could mount it using countersunk screws.

If the cost increase is too great from the board shop, you could extend out the solder mask a little more & countersink the 2 holes yourself on the drill press. Once you set the drill press stop, it would take you less than 20 seconds tops. A black screw head would be nice :)

Title: Re: Countersunk holes on PCB
Post by: wraper on March 09, 2018, 01:50:58 am

Quote from: dino on March 08, 2018, 09:05:38 pm

So far I found PCBWay in Shenzhen, if you insert countersunk holes, price is raised by more than two times at >100pcs.
My guess is that Eurocircuits is similar.

I don't think that price increase would scale as much, however Eurocircuits is many times more expensive to begin with.