Re: [Homebrew_PCBs] Sharpie compatibility, and other questions...
2004-03-10 by Stefan Trethan
Oh, then let me put it that way: I just decided i do not really need sulphuric acid and H2O2 etching ;-). However i plan to get a good scale (can t find a
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Re: [Homebrew_PCBs] Re: TT: getting the toner to stick (Don't forget the gravy)
2004-03-10 by Alan King
... Sorry if you read it that way. But that is a terribly low amount of time and attempts at a new process, and you made little if any mention of the good
Re: [Homebrew_PCBs] Gravy Substitutes... / test pattern
2004-03-10 by Stefan Trethan
... I somehow doubt spray starch is really what will work, but try...... A test pattern, which everybody can use, would be great, we could then compare results
Re: [Homebrew_PCBs] Sharpie compatibility, and other questions...
2004-03-10 by Jeremy Taylor
Lets put it this way, I m in over $2K US. Digital titration, magnetic stirring, 20 different indicator and reagent solutions, but this for more than just etch,
Gravy Substitutes...
2004-03-10 by pygar2
While I was out yesterday, I saw that there were basically 3 kinds of spray starch available... regular, heavy, and a non-stiffening sizing. I m not yet set up
Re: TT: getting the toner to stick (Don't forget the gravy)
2004-03-10 by Phil
... not much ... It s never an ... known and correct. wow, that s kind of rude and very irritating... I spent half a day fussing with this stuff with like 10
Re: [Homebrew_PCBs] Re: TT: getting the toner to stick (Don't forget the gravy)
2004-03-10 by Alan King
... The only thing such statements are a true indicator of is that not much effort has yet gone into trying many variations on the technique. It s never an
Re: [Homebrew_PCBs] Sharpie compatibility, and other questions...
2004-03-10 by Stefan Trethan
... How is the process, what do you need to measure to keep things going? If there are any advantages (like no clorine) i may switch over when the HCl bottle
Re: [Homebrew_PCBs] Re: TT: getting the toner to stick (Don't forget the gravy)
2004-03-10 by Stefan Trethan
... we all have read it, and experienced it a hundred times now (ok, almost all). WD40 is only good to lubruicate the dust bin! throw it away and get somthing
Re: [Homebrew_PCBs] Re: Sharpie compatibility, and other questions...
2004-03-10 by Stefan Trethan
... You can... never tried it in an inkjet, it is alcohol based i think. in the carbide plotter pen the line was scratched thin by the trailing edge and it
Re: [Homebrew_PCBs] ...And now for something completely different
2004-03-10 by Stefan Trethan
On Wed, 10 Mar 2004 18:07:40 -0000, poitsplace ... I have seen quite a few of these... ST
...And now for something completely different
2004-03-10 by poitsplace
Here s something that makes for an interesting gift for family and friends...I mean, you guys already have unetched circuit boards laying around (too bad it
Re: [Homebrew_PCBs] Sharpie compatibility, and other questions...
2004-03-10 by Jeremy Taylor
None of the pens I have tried, Radio Shack, Sharpie, or Mouser, have lasted in Cupric Chloride. The wood bleaching H202 is for cupric chloride, ONLY Do not use
Re: TT: getting the toner to stick (Don't forget the gravy)
2004-03-10 by Phil
maybe mineral oil. thats not so volatile. ... and ... the ... course ... coated ... and ... but ... My ... may ... to ... of ... and ... which ... is ...
Re: TT: getting the toner to stick (Don't forget the gravy)
2004-03-10 by Steve
... Yes, as has been covered here in depth, paper contraction due to the heat of a laser printer/copier causes problems. I d imagine a sheet of paper wetted
Re: Sharpie compatibility, and other questions...
2004-03-10 by Steve
... colors ... I tested a bunch of markers on an etch in Ferric Chloride. I didn t heat the ferric chloride enough, I guess, as it took half an hour. I made
Re: [Homebrew_PCBs] Re: TT: getting the toner to stick (Don't forget the gravy)
2004-03-10 by Stefan Trethan
... I do not think so. you WILL get some of the wd40 (which is really awful stuff) on the surface of the toner prohibiting a good bond to the copper. (fuser.
Re: TT: getting the toner to stick (Don't forget the gravy)
2004-03-10 by Phil
It seems there are two bondings going on here: toner to paper and toner to board. The goal is to increase the ratio of bonding to the board vs bonding to the
Re: [Homebrew_PCBs] Re: TT: getting the toner to stick (Don't forget the gravy)
2004-03-10 by Alan King
... Yes, same here. The idea is more understandable when you realize that this is more familiar to most as paper mache glue not really gravy. Sticking to the
Re: [Homebrew_PCBs] Re: TT: getting the toner to stick (Don't forget the gravy)
2004-03-10 by Stefan Trethan
... I thought so too first ;-) i thought gravy, with the fat/grease and all, that is never going to work. (i didn t believe my dictionary) but then, when it
Re: [Homebrew_PCBs] Sharpie compatibility, and other questions...
2004-03-10 by Stefan Trethan
... Any printer or copier using toner as color will work. some better and some worse. ... I do not use the sharpie because it is not sold here. i use
Re: TT:Don't forget the gravy...final update :(
2004-03-10 by poitsplace
Well...it still suffers the same problems as regular coated inkjet paper (can t do large areas as well as traces) so I guess it s a bust (although it does work
Re: TT:Don't forget the gravy...UPDATE
2004-03-10 by poitsplace
OK, made a batch...what I seem to find is... (1) thicker paper works better (not crazy kinds of thick, just not the uber-cheap paper (2) half sheets are less
Re: TT: getting the toner to stick (Don't forget the gravy)
2004-03-10 by poitsplace
... Yeah, initially it looks like this http://www.extremecooling.org/ec/images/pp/gravy/dry.jpg After drying and ironing I think I left it under a heavy book
Re: TT: getting the toner to stick (Don't forget the gravy)
2004-03-10 by Phil
I hope this isn t a joke. what kind of paper do you put it on? I get very wrinkled paper that doesn t want to feed through the machine at all. I even tried
Re: Sharpie compatibility, and other questions...
2004-03-10 by Phil
sharpies will work but I ve had trouble getting it thick enough. You can get etch resist pens that look an awful lot like a sharpie but seems to cover a
Sharpie compatibility, and other questions...
2004-03-10 by pygar2
I am a complete newbie at this, trying to learn enough to do it right- ish the first time... I ll be doing a toner-transfer from a photocopier. Does it need to
Re: Standard inkjet inks for etch resist?
2004-03-09 by Steve
I don t do screen print. I do know a little bit about it, though, probably enough to be dangerous. ; ) Why would you print onto the screen? A screen has to be
Re: [Homebrew_PCBs] Re: 50 bits for $10.00
2004-03-09 by Alan King
... Note that if the tunesandtools guy is still putting up bits for Monday end, he had some sizes that were 50 of a single size for $5 to $10 depending on
Re: Standard inkjet inks for etch resist?
2004-03-09 by Richard Mustakos
Steve, you did T-shirts with screen printing - did you ever come across any screen mask materials that were inkjet-able? Did you ever try to laser print onto
Re: [Homebrew_PCBs] Hand made pcb - attempt, also inkjet printing
2004-03-09 by Stefan Trethan
On Mon, 08 Mar 2004 16:06:43 -0800, Richard Mustakos ... I only worked in small quantities with the silver ink. so i didn t experience your
Re: TT: getting the toner to stick (Don't forget the gravy)
2004-03-09 by poitsplace
... Heh, I actually don t have a laser printer, I used it in the kinkos copier. However, the stuff really doesn t come off easily. If you are worried you can
Re: [Homebrew_PCBs] Re: TT: getting the toner to stick (Don't forget the gravy)
2004-03-09 by Anthony Toft
... Doesn t it come off in the printer when the paper has to make a turn? I d love to be able to make my own paper like this, but I m a little leery of it
Re: 50 bits for $10.00
2004-03-09 by Phil
I drilled a small board with the TE bits (65 holes). Overall, I like these bits but I did break one (#62) after about 25 holes. I wasn t putting any stress
Re: TT: getting the toner to stick (Don't forget the gravy)
2004-03-09 by poitsplace
It has to be a relatively thick coating...not sure spray starch would do it (although I have considered it)
Re: 50 bits for $10.00
2004-03-09 by Dave Mucha
... They must be back now as I spoke to Ron on the phone tonite. (I think I interupped his dinner) Anyway, he has drills and is ready to ship. Dave
Microdispensers and Inkjets
2004-03-09 by javaguy11111
With all the talk about using inkjet printing I started doing more research to understand the construction. I found a couple of sites that show lab built
Hand made pcb - attempt, also inkjet printing
2004-03-09 by Richard Mustakos
You guys were complaining about the vapor from acetone - let me tell you what not to do! Two nights ago I tried to hand draw a circuit onto a board with
Re: 50 bits for $10.00
2004-03-09 by Phil
Its funny you post this as just today I received my drill bit order from tinker s emporium. apparently they were on vacation all february... I haven t had a
Re: TT: getting the toner to stick (Don't forget the gravy)
2004-03-08 by Phil
why not just use spray laundry starch?
Re: [Homebrew_PCBs] Re: 50 bits for $10.00
2004-03-08 by Alan King
... http://cgi6.ebay.com/ws/eBayISAPI.dll?ViewSellersOtherItems&userid=toolsandtunes&include=0&since=-1&sort=3&rows=25 Toolsandtunes is his Ebay ID.. Yes it
Re: 50 bits for $10.00
2004-03-08 by Dave Mucha
I found those in a seach, (keyword - DRILL) but there was a post from someone who mentioned that they also got rasps aka routing bits, for cutting out the
RE: [Homebrew_PCBs] Re: 50 bits for $10.00
2004-03-08 by Daryl Owen
... From: Dave Mucha [mailto:dave_mucha@yahoo.com] Sent: Friday, January 30, 2004 11:32 AM To: Homebrew_PCBs@yahoogroups.com Subject: [Homebrew_PCBs] Re: 50
drills (again)
2004-03-08 by Dave Mucha
Hi all, I feel a little silly here. I ve posted more than a few times regarding drills and bits. A week or so ago, maybe a little more, someone posted that
Re: TT: getting the toner to stick (Don't forget the gravy)
2004-03-08 by poitsplace
... It s not EXACTLY gravy. You just mix up some water and flour (or starch...don t need as much starch) and stir it into boiling water. I applied it with
Re: [Homebrew_PCBs] Re: TT: getting the toner to stick (Don't forget the gravy)
2004-03-08 by Alan King
... That may not be a bad method at all, something that keeps the toner from sticking too well, yet doesn t make the paper surface hard and nonporous and smash
Re: Standard inkjet inks for etch resist?
2004-03-08 by Steve
... I moved them to Files in a folder on Direct Resist printing. The Photos area sucks- you uploaded beautiful closeup images, but Yahoogroups only allows
New file uploaded to Homebrew_PCBs
2004-03-08 by Homebrew_PCBs@yahoogroups.com
Hello, This email message is a notification to let you know that a file has been uploaded to the Files area of the Homebrew_PCBs group. File : /Direct
New file uploaded to Homebrew_PCBs
2004-03-08 by Homebrew_PCBs@yahoogroups.com
Hello, This email message is a notification to let you know that a file has been uploaded to the Files area of the Homebrew_PCBs group. File : /Direct
Re: Standard inkjet inks for etch resist?
2004-03-08 by Steve
There are quite a few kind of tshirt inks , all with different characteristics. I make imprinted tshirts, I ll see what mine does on a PCB. Steve ... has been