dice45 said:
Is that an MC? In that case it probably has more to do with the
differing masses of silver- and goldwound coils than their
electrical characteristics. That's my guess, at least. Why a
heavier coil should sound better is another thing, but taking
resonances and other phenomenae into account, it is perhaps
more important to get "the right" mass for the coil than to get
the lowest one?
Question about how PCB's are made.
As far as I know the only way to do plated through holes is the following (via's are done the same way):
-Drill all the holes first (with a CNC drill I hope).
-Lay down a negative resist pattern on both sides of the board.
-Coat the insides of the holes with a conductive material (a carbon based ink is normally used I believe).
-Electroplate the board (laying down layer of tin everywhere you want a track or pad to be).
-Strip the resist.
-Etch the board (removing copper everywhere you didn't plate (the tin plate acts as a resist layer for the copper as well as plating the holes).
-Apply solder mask, etc.
Is this correct or is there some other process that is used to create double sided boards with plated through holes (or boards with via's)?
Follow up question. How does hi-end commercially produced audio gear sound good when they contain plated PCB's?
Perhaps Dice45's rejection of plated boards is based on something else (like problems with the DIY plating process) rather than just the sonic effects of plating.
Phil
As far as I know the only way to do plated through holes is the following (via's are done the same way):
-Drill all the holes first (with a CNC drill I hope).
-Lay down a negative resist pattern on both sides of the board.
-Coat the insides of the holes with a conductive material (a carbon based ink is normally used I believe).
-Electroplate the board (laying down layer of tin everywhere you want a track or pad to be).
-Strip the resist.
-Etch the board (removing copper everywhere you didn't plate (the tin plate acts as a resist layer for the copper as well as plating the holes).
-Apply solder mask, etc.
Is this correct or is there some other process that is used to create double sided boards with plated through holes (or boards with via's)?
Follow up question. How does hi-end commercially produced audio gear sound good when they contain plated PCB's?
Perhaps Dice45's rejection of plated boards is based on something else (like problems with the DIY plating process) rather than just the sonic effects of plating.
Phil
PCB
As far as I know the only way to do plated through holes is the following (via's are done the same way):
What in the ...........
Man I know I shouldn't ask....... but.....
Where do you think babies come from and did you get your info on PCBs from the same place?
http://www.rockwellcollins.com/otherbusinesses/cpc/howtomake/
Art
As far as I know the only way to do plated through holes is the following (via's are done the same way):
What in the ...........
Man I know I shouldn't ask....... but.....
Where do you think babies come from and did you get your info on PCBs from the same place?http://www.rockwellcollins.com/otherbusinesses/cpc/howtomake/
Art
artnyos,
I was talking about making double sided boards, not laminated, multi-layer PCB's.
Once you get past the lamination process, the drilling, plating and etching process was the same as the process I described. Since I was talking about double sided, single layer boards, obviously the lamination process isn't part of what happens.
To paraphrase from the link you posted:
- bunch of steps related to making individual layers
- Laminate layers (This gets us to the starting point of the process I described).
- Drill holes
- Electroplate
- Etch Copper
- Etc.
Could you please post without being insulting?
Phil
I was talking about making double sided boards, not laminated, multi-layer PCB's.
Once you get past the lamination process, the drilling, plating and etching process was the same as the process I described. Since I was talking about double sided, single layer boards, obviously the lamination process isn't part of what happens.
To paraphrase from the link you posted:
- bunch of steps related to making individual layers
- Laminate layers (This gets us to the starting point of the process I described).
- Drill holes
- Electroplate
- Etch Copper
- Etc.
Could you please post without being insulting?
Phil
Teflon boards
I can purchase double sided teflon boards with photo-resist at www.elfa.no (Norway, Sweden, Denmark) at a fairly high cost. I have a friend who can expose and etch.
BTW: I have not made any teflon boards yet but will soon.
Thanks for all the help!
Petter
I can purchase double sided teflon boards with photo-resist at www.elfa.no (Norway, Sweden, Denmark) at a fairly high cost. I have a friend who can expose and etch.
BTW: I have not made any teflon boards yet but will soon.
Thanks for all the help!
Petter
The correct address is www.elfa.se or www.elfa.se/no for the
norwegian site.
www.elfa.no is the other Elfa, the company manufacturing storage shelves and such things.
Not complaining, just trying to avoid some confusion for other
readers.
norwegian site.
www.elfa.no is the other Elfa, the company manufacturing storage shelves and such things.
Not complaining, just trying to avoid some confusion for other
readers.
throughholes
easier to cheat?
http://www.surplussales.com/FeedthruEyelets/FeedthruEyelets.html
Those desperate for teflon can get their duroid kicks here too, at a price.
Jake
easier to cheat?
http://www.surplussales.com/FeedthruEyelets/FeedthruEyelets.html
Those desperate for teflon can get their duroid kicks here too, at a price.
Jake
TEFLON BOARDS
Hi fellows,
Since you asked for a source for teflon boards here is another one:
http://rswww.com/
They are a multinational with fair representation throughout the world.
PTFE boards are available in various sizes.
For tube afficionados there are turret tags and prb solder tags as well.
While your at it:you can also find teflon tube insulation (tubing) for most wire gauges.
Also I highly recommend Deskadel in Belgium at :
http://www.perso.be/deskadel/
For a lot of stuff unobtainable elsewhere and related to silver and gold wire Mr.De Laet ,president of the company,can usually unearth it given time.
Cheers,
Hi fellows,
Since you asked for a source for teflon boards here is another one:
http://rswww.com/
They are a multinational with fair representation throughout the world.
PTFE boards are available in various sizes.
For tube afficionados there are turret tags and prb solder tags as well.
While your at it:you can also find teflon tube insulation (tubing) for most wire gauges.
Also I highly recommend Deskadel in Belgium at :
http://www.perso.be/deskadel/
For a lot of stuff unobtainable elsewhere and related to silver and gold wire Mr.De Laet ,president of the company,can usually unearth it given time.
Cheers,
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