Re: [Homebrew_PCBs] Isopropyl Alcohol 90%
2006-11-30 by Herbert E. Plett
... usually they are ABS... styropor (or whatever brand) is pure foamed styrene. is this attacked?
Messages
Browse messages
Page 380 of 707 · 35337 messages matched
Re: [Homebrew_PCBs] Re: Isopropyl Alcohol 90%
2006-11-29 by AnaLog Services, Inc.
Yes, that does appear to be the case. I just tested PGA on some ABS, and there is no detectable degradation. The denatured material I have causes marked
Looking for someone to do some boards for me.
2006-11-29 by muddy0409
Hello all, I have just found this group and here goes: I am interested in finding someone to do small runs of boards for me, from PROTEL Advanced PCB V3 files.
Re: Isopropyl Alcohol 90%
2006-11-29 by Steve
From what others are saying, I suspect that it s either the methanol, or there are some other additives to denature it that mildly eat into some plastics.
Re: Isopropyl Alcohol 90%
2006-11-29 by D
... styrene ... but ... denaturing ... There are a BUNCH of different denaturing agents used for ethanol in the US. The authoratative list is here:
Re: [Homebrew_PCBs] Re: Possible to do duroid/alumina substrates at home?
2006-11-29 by Leon Heller
... From: Don To: Sent: Wednesday, November 29, 2006 3:01 PM Subject: [Homebrew_PCBs] Re: Possible to
Re: Possible to do duroid/alumina substrates at home?
2006-11-29 by Don
... Yep. That s where my interest comes from. I keep seeing directional couplers on ebay for hundreds of dollars (used) and I know there is nothing inside but
Re: [Homebrew_PCBs] Isopropyl Alcohol 90%
2006-11-29 by Syd H. Levine
As a rule, mixing solvents is fairly predicable. There are exceptions, so maybe MEK does not act as aggressively as Methanol as a small percentage of the mix
Re: [Homebrew_PCBs] Isopropyl Alcohol 90%
2006-11-29 by Stefan Trethan
On Wed, 29 Nov 2006 10:17:30 +0100, Syd H. Levine ... I can not be sure if it is is my denatured ethanol, since i do not have a MSDS for the brand i currently
Re: [Homebrew_PCBs] Isopropyl Alcohol 90%
2006-11-29 by Syd H. Levine
I found a good chemical compatibility table indicating ABS (a common styrene based plastic used in electronics) is severely attacked by Methanol, but only very
Re: [Homebrew_PCBs] Re: Isopropyl Alcohol 90%
2006-11-29 by Syd H. Levine
Steve: Is it the methanol additive doing that? My experience is that it will actually smear clear polystyrene windows like you describe (and stick the fuzz
Re: [Homebrew_PCBs] Possible to do duroid/alumina substrates at home?
2006-11-29 by Leon Heller
... From: Don To: Sent: Wednesday, November 29, 2006 3:02 AM Subject: [Homebrew_PCBs] Possible to do
Re: Third board in 30 years.
2006-11-29 by Steve
There was no description. There needs to be enough of a description so that someone coming across the file without reading the related messages will know why
RE: [Homebrew_PCBs] board house
2006-11-29 by Len Shelton
I use www.4pcb.com for all my boards. They have a $500 new customer special, so you won t pay ANYTHING for your first two orders
Possible to do duroid/alumina substrates at home?
2006-11-29 by Don
Hi folks. Has anybody experimented with some of the more esoteric pcb materials such as Roger s duriod or Alumina substrates? Is this kind of work even
Re: [Homebrew_PCBs] Re: Isopropyl Alcohol 90%
2006-11-29 by Stefan Trethan
On Wed, 29 Nov 2006 02:30:23 +0100, Stefan Trethan ... confirmed, german MSDS list 1% MEK (and or other ketones and maybe tiny amounts
Re: [Homebrew_PCBs] Re: Isopropyl Alcohol 90%
2006-11-29 by Stefan Trethan
... I think our denatured here just has no methanol then. I find most electronics plasticwork is still ABS. ST
Re: [Homebrew_PCBs] Isopropyl Alcohol 90%
2006-11-29 by Stefan Trethan
On Wed, 29 Nov 2006 01:14:48 +0100, Peter Harrison ... How could both be right? Either is is attacked significantly or it isn t. I can t see no effect of
Re: Isopropyl Alcohol 90%
2006-11-29 by Steve
... are ... with no ... Denatured alcohol has methyl alcohol added, and denatured -does- attack styrene, albiet very slowly. Most VCR front panels are/were
Re: [Homebrew_PCBs] Isopropyl Alcohol 90%
2006-11-29 by Peter Harrison
... I would suggest you may both be right. I was curious about this so I popped down to the garage and tried some polystyrene foam in both IPA and denatured
Re: Screen printing emulsion
2006-11-28 by john80014
They make two products. 1) general use and 2) a super wich i think is 1200dpi. They actually give a short step by step for pvb track layout. For solder mask i
Re: [Homebrew_PCBs] sharpie pens
2006-11-28 by Leon Heller
Leon Heller, G1HSM Suzuki SV1000S motorcycle leon.heller@bulldoghome.com http://www.geocities.com/leon_heller ... From: Lez To:
Re: [Homebrew_PCBs] Best way to make an odd multilayer PCB
2006-11-28 by Stefan Trethan
... Get the thin boards meant for multilayer and stick them together with epoxy after you are done making them the usual way. ST
Re: [Homebrew_PCBs] sharpie pens
2006-11-28 by Lez
Well I just got back from my trips to staples(uk) and no stocks of Staedtler Chaper on the sharpie, but non of the sharpies have any health warning, so maybe
Re: [Homebrew_PCBs] sharpie pens
2006-11-28 by Mike
Did a Google and came up with this: http://www.duall.com/store/product/103317.103317/calligraphy-duo-markers-black.html Not sure if this is what is referred
Re: [Homebrew_PCBs] Third board in 30 years.
2006-11-28 by Leon Heller
... From: Mike Phillips To: Sent: Tuesday, November 28, 2006 3:57 PM Subject: [Homebrew_PCBs] Third
Best way to make an odd multilayer PCB
2006-11-28 by robwell
I have an application that ideally has a lot of layers but no thru- holes. The layers will be staggered to expose the layers and give access to contact pads.
Re: [Homebrew_PCBs] sharpie pens
2006-11-28 by Lez
OK I can now say with no uncertainty that this WHITE Uni Paint Pen is the best etch resist (in fecl) that I have ever used, I had problems getting it off ! I
Third board in 30 years.
2006-11-28 by Mike Phillips
I tried to upload a pic of my 3rd board into photos folder. It said it would have to be approved. It never arrived. What s the problem? Mike
Re: [Homebrew_PCBs] sharpie pens
2006-11-28 by Edward Slatt
My brother went to the Naval Academy. Edge dressing was sometimes used to pick on the underclassmen. It is so difficult to get off skin that the midshipmen
Re: [Homebrew_PCBs] sharpie pens
2006-11-28 by Lez
... I like it, that has to be the best off the wall use yet, whatever made you think of it ! Well I just got back from a trip to the pen suppliers, no
Re: Screen printing emulsion
2006-11-28 by oneacmename
They are really rather fine holes and threads. Most mass production T Shirts with graphics are done this way along with snowboards, skateboards, and most any
Re: [Homebrew_PCBs] sharpie pens
2006-11-28 by Edward Slatt
Kiwi Edge Dressing is a shoe shine product used to re-blacken leather shoe soles. I tested it against a a sharpie pen I had on hand as etch resist. The edge
Re: [Homebrew_PCBs] Isopropyl Alcohol 90%
2006-11-28 by Stefan Trethan
On Tue, 28 Nov 2006 13:44:32 +0100, AnaLog Services, Inc. ... Polystyrene foam cups are virtually non-existent here. I can t remember ever seeing one in my
Re: [Homebrew_PCBs] Isopropyl Alcohol 90%
2006-11-28 by AnaLog Services, Inc.
Most peculiar. I originally noticed this with denatured alcohol. The denaturing agent is usually methanol. I *THINK* I have seen the same effect with PGA
Re: [Homebrew_PCBs] Isopropyl Alcohol 90%
2006-11-28 by Stefan Trethan
On Tue, 28 Nov 2006 13:06:09 +0100, AnaLog Services, Inc. ... Then you must have different polystyrene than we have. Ethanol does nothing to mine. ST
Re: [Homebrew_PCBs] Isopropyl Alcohol 90%
2006-11-28 by AnaLog Services, Inc.
Either is aggressive against polystyrene. For instance, those white foam expanded polystyrene cups cannot survive PGA (as if anybody could stand to drink it
Re: [Homebrew_PCBs] Isopropyl Alcohol 90%
2006-11-28 by Stefan Trethan
On Tue, 28 Nov 2006 06:43:34 +0100, Syd H. Levine ... I just tried, with a solid polystyrene cup (marked), expanded polystyrene foam (marked), and ABS. None of
Re: [Homebrew_PCBs] Isopropyl Alcohol 90%
2006-11-28 by Stefan Trethan
On Tue, 28 Nov 2006 06:43:34 +0100, Syd H. Levine ... I ll try again then! Did you use pure ethanol or a denatured variety? ST
Re: [Homebrew_PCBs] Re: Screen printing emulsion
2006-11-28 by Lez
I can now see how it works, some of the photo-reactive material washes away, leaving the mesh behind, does the mesh not create problems when the resist is
Re: [Homebrew_PCBs] Isopropyl Alcohol 90%
2006-11-28 by Leon Heller
... From: Lez To: Sent: Tuesday, November 28, 2006 12:49 AM Subject: Re: [Homebrew_PCBs]
Re: Screen printing emulsion
2006-11-28 by Len Warner
... The part you are missing is development in water. This is steps 7 & 8 in the illustrated stencil production process at
Re: board house
2006-11-28 by Steve
Don t forget to check the Links page: If that link doesn t work, go
Re: [Homebrew_PCBs] sharpie pens
2006-11-28 by JanRwl@AOL.COM
In a message dated 11/27/2006 5:44:24 A.M. Central Standard Time, stefan_trethan@gmx.at writes: I don t have sharpies here, but staedtler red permanent OHP
Re: [Homebrew_PCBs] sharpie pens
2006-11-28 by JanRwl@AOL.COM
In a message dated 11/27/2006 5:34:09 A.M. Central Standard Time, lez.briddon@googlemail.com writes: Do some other pens work better? I have READ that
Re: [Homebrew_PCBs] Isopropyl Alcohol 90%
2006-11-28 by Syd H. Levine
Ethanol will most definitely attack polystyrene and its cousins. If you have not noticed it, it is because you have not been handling true polystyrene. It
[Homebrew_PCBs] Re: Screen printing emulsion
2006-11-28 by Mark Mickelsen
StencilPro looks like it might be very useful for creating silkscreens and solder masks. I can see using regular white enamel from a spray can for the
Re: Screen printing emulsion
2006-11-28 by oneacmename
I have never used this but assume its like normal silkscreening. Basically think of like womens stockings stretched tight over something. Then coat it with the
Re: [Homebrew_PCBs] board house
2006-11-28 by Leon Heller
... From: adastra_2001 To: Sent: Monday, November 27, 2006 11:15 PM Subject: [Homebrew_PCBs] board
Re: [Homebrew_PCBs] Isopropyl Alcohol 90%
2006-11-28 by Stefan Trethan
On Tue, 28 Nov 2006 01:32:54 +0100, AnaLog Services, Inc. ... I ve yet to observe ethanol attack styrene, but maybe the additives are different in some places