Re: Brother Toner info
2009-05-23 by awakephd
DJ, did you write the control program in C or in assembler? How would you feel about sharing the program? Please don t hesitate to say no -- I will certainly
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Re: [Homebrew_PCBs] Re: Neutralizing Muriatic Acid & Hydrogen Peroxide
2009-05-23 by Stefan Trethan
You are right, thanks. ST
Re: [Homebrew_PCBs] Re: Neutralizing Muriatic Acid & Hydrogen Peroxide
2009-05-23 by JanRwl@AOL.COM
In a message dated 5/22/2009 11:53:55 P.M. Central Daylight Time, stefan_trethan@gmx.at writes: The phosphorus was in some kind of oil, not water, water would
Re: [Homebrew_PCBs] Re: Neutralizing Muriatic Acid & Hydrogen Peroxide
2009-05-23 by Stefan Trethan
Yes plastic is fine for transit, and to store it some months, but not several years. The phosphorus was in some kind of oil, not water, water would ignite it.
$24.95 GBC Laminator
2009-05-22 by Ed Smith
I could not resist getting one of these laminators to check it out. Had no need for it because I have a GBC 18 inch laminator. Anyhow, wanted to check temp,
Re: [Homebrew_PCBs] Re: Neutralizing Muriatic Acid & Hydrogen Peroxide
2009-05-22 by Alessio Sangalli
Hey Jack would you read the email about the PCB file? I would like to etch it today but I need the right file bye! as
Re: [Homebrew_PCBs] Re: Neutralizing Muriatic Acid & Hydrogen Peroxide
2009-05-22 by Jack Coats
WalMart sells dilute Hydrogen Peroxide (3%) in brown, recyclable HDPE bottles. So, if you replace it every year or two, I would guess HDPE is a great storage
Re: [Homebrew_PCBs] Re: Neutralizing Muriatic Acid & Hydrogen Peroxide
2009-05-22 by Leslie Newell
If you are concerned, put the glass bottle(s) inside another container. A suitably sized plastic food storage container would work. I use several gallons of
Re: [Homebrew_PCBs] Re: Neutralizing Muriatic Acid & Hydrogen Peroxide
2009-05-22 by Stefan Trethan
I have the etchant in the tank (no photo), and the spare chemicals (concentrated form) in glass bottles. The etchant itself does not have a very high
Re: [Homebrew_PCBs] Re: Neutralizing Muriatic Acid & Hydrogen Peroxide
2009-05-22 by Alessio Sangalli
... so this etching tank is the glass container you store your chemicals? Do you have a photo of it? bye! as
Re: [Homebrew_PCBs] Re: Neutralizing Muriatic Acid & Hydrogen Peroxide
2009-05-22 by Stefan Trethan
You can buy expensive lab glass bottles that are glass inside and plastic outside, so if they break nothing spills. I m cheap and just careful. Regarding your
Re: [Homebrew_PCBs] Re: Neutralizing Muriatic Acid & Hydrogen Peroxide
2009-05-22 by Alessio Sangalli
... Yeah but glass bottles are kind of dangerous because can break easily if dropped or hit... Also, I would have an hard time to find a glass bottle with a
Re: [Homebrew_PCBs] Re: Neutralizing Muriatic Acid & Hydrogen Peroxide
2009-05-22 by Stefan Trethan
Strong HCl will go very slowly through HDPE bottles, leaving some residue on the outside that looks like a salt and corroding nearby steel. Also the plastic
Re: [Homebrew_PCBs] Re: Neutralizing Muriatic Acid & Hydrogen Peroxide
2009-05-22 by Philip Pemberton
... Does anyone know if those black plastic accordion bottles used for darkroom chemistry fall into this category? The ones I have are made from HDPE, if
Re: [Homebrew_PCBs] Re: Neutralizing Muriatic Acid & Hydrogen Peroxide
2009-05-21 by Leslie Newell
If you are going to store it, preferably use a sealed glass container. Don t leave it in an open container as the fumes can make any nearby steel go rusty.
Re: Neutralizing Muriatic Acid & Hydrogen Peroxide
2009-05-21 by perri.anthony
... DJ Thanks for the feedback. If I decide to re-use it in the short term what are the precautions I need to be aware of for storage of the solution? The
Re: [Homebrew_PCBs] Neutralizing Muriatic Acid & Hydrogen Peroxide
2009-05-21 by DJ Delorie
... A couple of things... First, don t! Keep the solution around and use it for other boards. Eventually it will turn a dark green and become copper chloride
Re: [Homebrew_PCBs] Neutralizing Muriatic Acid & Hydrogen Peroxide
2009-05-21 by Stefan Trethan
I m sure some whiz can calculate it exactly, i m no good with math so i woud try to add an indicator and gradually add the baking soda. If you have no
Re: [Homebrew_PCBs] Re: Brother Toner info
2009-05-21 by DJ Delorie
... Well, it does have the drawback that the rollers aren t spring-loaded. They re sitting in a fixed moulded bracket, and the roller surface itself has a
Re: Brother Toner info
2009-05-21 by warrenbrayshaw
... Thanks that s great That s a clever °F custom character. I had been turning down that laminator because I thought it would not be good enough so the
Re: [Homebrew_PCBs] Re: Brother Toner info
2009-05-21 by DJ Delorie
... Ok, ok, I ll take pictures ;-) http://www.delorie.com/electronics/laminator/ The left button is units (F/C). The right button is display mode: temp,
Neutralizing Muriatic Acid & Hydrogen Peroxide
2009-05-21 by perri.anthony
So I mixed a solution of Muriatic Acid (1/2 cup) & Hydrogen Peroxide (1 Cup) to etch a board. It worked very well but now I am trying to figure our how much
Re: Brother Toner info
2009-05-20 by warrenbrayshaw
... DJ Do you have a photo of the completed controller showing the LCD in operation. Cheers Warren
Re: [Homebrew_PCBs] Re: Brother Toner info
2009-05-20 by DJ Delorie
... http://www.delorie.com/electronics/laminator/ I replaced the bimetallic switch with a thermocouple and triac, and used an mcu with a potentiometer and LCD
Re: Brother Toner info
2009-05-20 by reneske
Hi DJ Delorie Could you share how you have made the modified laminator. I m using one for aplying dry film. best regard René
Re: [Homebrew_PCBs] GBC H535 Laminator report!
2009-05-20 by DJ Delorie
I don t think the actual temp matters, just that I think you need hotter . If it s all the way up already, the answer is no ;-) This is why I hacked mine - I
Re: [Homebrew_PCBs] GBC H535 Laminator report!
2009-05-19 by michael tenore
I just used the max temp that the LCD screen displayed! It is possable that this temp is higher than that.but right now I have no way to tell. When I go back
Brother Toner info
2009-05-19 by DJ Delorie
I got some samples from Ken off his Brother laser printer, and ran some tests with my modified laminator. Basically, at the default of 320F, the brother toner
Re: [Homebrew_PCBs] GBC H535 Laminator report!
2009-05-19 by DJ Delorie
Can you set the temp higher? I found I have to use around 350F with HP toner.
GBC H535 Laminator report!
2009-05-19 by michael tenore
Well I finally tried my used GBC H535 Laminator on a board a about 20 minutes ago! Settings! Cold/Hot=HOT Type Material= BOARD Temp 328 F Speed=6 Warmup time
Re: [Homebrew_PCBs] Re: professional board making
2009-05-19 by Piers Goodhew
SparkFun have some gerber batch files for Eagle for use with BatchPCB.com, which produce the various masks/screens/layers and a drill file (and which are
Re: [Homebrew_PCBs] professional board making
2009-05-19 by Viper62pr
I think the minimum is 100 sq. in. I usually use the 155 sq. in. option. I also think production quantity starts at 1600 sq. in. The price includes Fed Ex
Re: [Homebrew_PCBs] Re: professional board making
2009-05-19 by Viper62pr
This is one way I do it To make a Gerber file. THIS IS FOR 2 SIDED BOARDS ONLY. Goto File-Cam Processor or use the CAM button In the CAM processor goto
Re: professional board making
2009-05-19 by Brian
I checked out Phoenix. seems pretty good. I am using eagle cad. Could anyone tell me how to make the files to send them? This is all new to me.
Yellow
2009-05-18 by DJ Delorie
Just got a moment to drop the CMYK mask into the exposure box with a step gauge on it. Results: after three HOURS of exposure, neither black nor yellow
Re: [Homebrew_PCBs] professional board making
2009-05-18 by Henry Liu
Does gold phoenix have a prototype board service? Min price out the door seems to be $100 for 100 sq inches. I m always on the lookout for cheapest min order
Re: [Homebrew_PCBs] professional board making
2009-05-18 by Jack Coats
In all this, I guess we haven t said which is the cheapest . If you come up with a good answer or time vs $ sheet for yourself, sharing it with the rest
Re: [Homebrew_PCBs] professional board making
2009-05-18 by Henry Liu
I asked this question before and I have used http://www.silvercircuits.com/ with great success. $40 for your basic 1 board + $12 shipping Panel service
Re: [Homebrew_PCBs] professional board making
2009-05-18 by Viper62pr
I have been using Gold Phoenix for over a year now, it usually takes 10 days from the time I send in my gerbers to the time it arrives here. Shipping to the US
RE: [Homebrew_PCBs] professional board making
2009-05-18 by Brian Schmalz
Yup, it s BatchPCB.com. I ve used their service many times, and have been happy with it. They use a company in China called Gold Phoenix (which is also where
Re: [Homebrew_PCBs] professional board making
2009-05-18 by leon Heller
... From: Stefan Trethan To: Sent: Monday, May 18, 2009 1:37 PM Subject: Re: [Homebrew_PCBs]
Re: [Homebrew_PCBs] Discreet versus Variable control
2009-05-18 by KeepIt SimpleStupid
Phase angle fired (PAP) AC is used in the industry. If operating into a transformer, it must have current limiting. I used variable DC (1.5 KW) for a low
Re: [Homebrew_PCBs] professional board making
2009-05-18 by Stefan Trethan
I thought they used Olimex? Olimex is located somewhere in eastern Europe I think, not China, but then I may be wrong. If you need whole panels it is probably
Re: [Homebrew_PCBs] professional board making
2009-05-18 by Jack Coats
I forget where I saw it, but I saw a group that has Chinese connections, and once a month they send a pack off to be processed. They come back about a month
Discreet versus Variable control
2009-05-18 by Daniel Howard Bryant
I just recently got a small toaster oven from a thrift store for $3 (it was half off day). I have already removed the timer, the thermal switch, rewired and
professional board making
2009-05-18 by Brian
who is the cheapest and best to use for panalized boards with masking. Brian
Re: solder paste choice
2009-05-17 by Brian
I will find out what kind of WS flux and paste we use at work and let you know monday. Brian P.S. I just made a board with a SMD mega8 using WS flux and used
Re: [Homebrew_PCBs] 74LS157 pinouts?
2009-05-17 by Donald H Locker
Hi, Michael. As long as 3out and 4out move with the 3a/b and 4a/b designation, there should be no difficulty. In other words, it doesn t matter whether the
Re: [Homebrew_PCBs] 74LS157 pinouts?
2009-05-17 by michael tenore
Never mind my last post! I see what they did. They are mixing apples and oranges.. I have to stop reviewing my designs at 3am! Sorry Guys mike
74LS157 pinouts?
2009-05-17 by michael tenore
I was rechecking the design of of a board that I will be making in the next few days and I just noticed the pinout of the Texas Instrument 74LS157 is different