Re: Etchant Identification
2012-09-24 by Edward Brown
Looks like ammonia per-sulphate,that turns light blue when mixed with water,and its more environmentally safe. Don,t mix it all if you buy it only mix enough
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Re: [Homebrew_PCBs] Etchant Identification
2012-09-23 by Donald H Locker
Have you asked the seller? As far as I can tell, it is a white crystalline product. Absolutely nothing more than that. Donald. -- *Plain Text* email -- it s an
Re: [Homebrew_PCBs] Etchant Identification
2012-09-23 by John Anhalt
This is just a guess, but that is what others seem to be doing too. From the description (solid powder, clear solution becoming colored but still clear) it is
Re: Etchant Identification
2012-09-23 by Kevin Byrne
I used some of that etchant and its storage life was not good. Mix just what you need by figureing out board size, per specs that come with that bag only and
Re: [Homebrew_PCBs] Etchant Identification
2012-09-23 by Stefan Trethan
I buy a lot of stuff in china, but bags of white powder, I m not so sure ;-) ST
Re: [Homebrew_PCBs] Etchant Identification
2012-09-23 by Leon Heller
... Ammonium persulphate? Leon -- Leon Heller G1HSM
Etchant Identification
2012-09-23 by David
Hi All, Can anyone tell me what this etchant is? I have not seen such before.
Re: [Homebrew_PCBs] Spray etcher completed
2012-09-23 by Emil Johnsen
... Looks like a very nice design. Can t wait to see the laser plotter :) How many watts does the motors need to be? -- Emil
Re: Spray etcher completed
2012-09-23 by jcarlosmor
Congratulations, and very good work you did on this project. However, I still think that the most simple spray etching system is like the Kepro tanks. I did
ANN: PCB Synergy
2012-09-18 by iamstrine
I have lurked in this group for about 10 years. The occasional technological breakthroughs are amazing. Anyway for those who are thinking of taking your hobby
Re: Sillhoute Cameo - Small electric spindle
2012-09-17 by KalleP
Hi All, ... How about a small modification to make a proper Y axis bed. Using suitable guide rollers (bearings) to keep a carrier aligned and then a timing
Re: Spray etcher completed
2012-09-17 by tda7000
I see it s turned up on Hackaday now: http://hackaday.com/2012/09/16/etching-brass-and-copper-with-the-etchinator/
RE: [Homebrew_PCBs] Slightly Offtopic Re: Spray etcher completed
2012-09-17 by Andrew Volk
While I do agree that a machinist s lathe would do the work better, I bought by wood midi-lathe just for this kind of work on plastic and brass. You just need
Slightly Offtopic Re: Spray etcher completed
2012-09-16 by teknochaman
I have been told by a turning machinist that a traditional wood lathes work in a horizontal spin way so won t fit the task, except more complex wood lathes
Re: Sillhoute Cameo
2012-09-16 by tgr8883
I know this is a little off-topic, but I wanted to let everyone know that I ve been successfully using a Silhouette SD to cut SMT stencils for a while now. I
Re: Sillhoute Cameo
2012-09-16 by Mike
Great work Mark. Yes, as you pointed, the PCB material HAS to bridge the two rollers and their mating grooves. They are adjustable but only so close together
Re: Spray etcher completed
2012-09-16 by designer_craig
Nice job. I built a splash etcher years ago and found the trick is to get some randomness to the splash. I did this by making the radial edge of the splashier
Re: [Homebrew_PCBs] Spray etcher completed
2012-09-16 by Malcolm Parker-Lisberg
Some thoughts that come to mind from reading you excellent article: Add some vertical oscillation to the PCB mounting system to overcome the problem of
Re: Spray etcher completed
2012-09-16 by cunningfellow
... Early versions didn t have vanes. They had startup reliability problems. The vanes fixed the startup issues. The BEST solution for the bottom is a radial
Re: Spray etcher completed
2012-09-16 by cunningfellow
Early on in the write up I experimented with holding the motor and PVC in a vise and using a file to turn it down It worked but took ages and was messy. So I
Re: [Homebrew_PCBs] Spray etcher completed - alternative rotor idea
2012-09-16 by Robin Whittle
Here is an idea for a spray etcher, inspired by Steven s project: http://www.instructables.com/id/The-Etchinator-low-cost-spray-etcher/ Lets say we have some
Re: [Homebrew_PCBs] Spray etcher completed
2012-09-16 by Robin Whittle
Hi Andrew, ... I doubt if there is an absolute need for the vanes at the bottom of each rotating tube, which you made from a cut down black plastic toy wheel.
RE: [Homebrew_PCBs] Re: Spray etcher completed
2012-09-16 by Andrew Volk
You might need a lathe, but you don t need a metal lathe. A wood lathe would do. On the issue of the impeller at the bottom (clever repurposing there), would
Re: [Homebrew_PCBs] Spray etcher completed
2012-09-16 by Stefan Trethan
Good work, you have ironed out all the issues that stopped me. ST
Re: Spray etcher completed
2012-09-16 by tda7000
I ve only just had a quick glance through but it does look really nice, and cheap too. Lack of a lathe will hinder my ability to make one though,
Spray etcher completed
2012-09-15 by cunningfellow
Only took five years http://www.instructables.com/id/The-Etchinator-low-cost-spray-etcher/ Please give any feed back. I am working on the laser plotter write
Re: [Homebrew_PCBs] Re: Sillhoute Cameo
2012-09-15 by Mark Lerman
The problem with feeding bare copperclad is that it has to bridge two of the knurled sections, so a large piece is required each time I think I am getting
Re: Sillhoute Cameo
2012-09-15 by Mike Sinclair
Great topics! One thing to know is that the Z-axis is just a solenoid with a spring return. A solenoid s force (-Z in this example) is proportional the the
Re: [Homebrew_PCBs] Sillhoute Cameo
2012-09-15 by Mark Lerman
Whoops - my error. The knife does, indeed, rotate in the holder so that cutter compensation can/might take place Also, I reviewed some of my prior cuts that
Re: [Homebrew_PCBs] Sillhoute Cameo
2012-09-14 by Mark Lerman
More: It was very easy to modify the Sillhoutte to feed pcb accurately. The machine comes apart easily and 4 pieces of 3/8 x 9/16 o-rings did the trick. I
[Homebrew_PCBs] Sillhoute Cameo
2012-09-14 by Mark Lerman
I just received my Sillhoute Cameo and have a few first impressions. Mike, if you could chime in here I d appreciate it because I can t seem to achieve your
RE: [Homebrew_PCBs] Re: More on - Produce Quick & Cheap PCBs with a CNC paper cutter
2012-09-14 by MIKE DURKIN
My wife loves her silhouette ... I might too now. Mike KC7NOA To: Homebrew_PCBs@yahoogroups.com From: sinclair@microsoft.com Date: Fri, 14 Sep 2012 06:21:40
Re: More on - Produce Quick & Cheap PCBs with a CNC paper cutter
2012-09-14 by Mike Sinclair
Great comments everyone! Good idea using 0-ohm chip resistors as bridges. I believe this method can produce 10mill trace or spaces reliably. Now it s up to me
Re: [Homebrew_PCBs] Introduction
2012-09-13 by Jamie Cunningham
Considering it s not signed by a real person and they were ASKED to sign their name last time with no reply - yeah this is definitely spam Jamie Check out my
RE: [Homebrew_PCBs] Introduction
2012-09-13 by Jim Franklin
Hmm, an almost identical post to the one on 4th September @ 03:55 can anyone smell spam? _____ From: Homebrew_PCBs@yahoogroups.com
Introduction
2012-09-13 by pdj@pdjinc.com
Hi Yahoo users. About me: I build and distribute the Pilot Pro CNC routers and appreciate being a part of this users group. I want to share CNC ideas and
Re: Spray Etcher
2012-09-13 by psykhon@yahoo.com
About conical nozzles not having an uniform etch, Im not sure how much this is a problem, Bungard uses it on their splash center/xl machines and they claim a
Re: [Homebrew_PCBs] Re: More on - Produce Quick & Cheap PCBs with a CNC paper cutter
2012-09-13 by Mark Lerman
The designer version (extra $50) of the software that comes with the Sillhoute allows import of svg files. There is also an eagle ulp that exports svg files,
Re: [Homebrew_PCBs] Re: More on - Produce Quick & Cheap PCBs with a CNC paper cutter
2012-09-13 by Mark Lerman
I think they make much of their money by selling cartridges with designs, so they probably don t want users to be able to import their own designs. Sort of
Re: More on - Produce Quick & Cheap PCBs with a CNC paper cutter
2012-09-13 by tda7000
I never understood this sort of behaviour. Surely the more software the product is supported by or can work with, the more likely people will buy it because
Re: [Homebrew_PCBs] Re: More on - Produce Quick & Cheap PCBs with a CNC paper cutter
2012-09-13 by David Mitchell
I attempted to make an RFID tag on a PCB by designing the circuit in Eagle, then running the Cam Processor to export in EPS format, which can be read by
Re: More on - Produce Quick & Cheap PCBs with a CNC paper cutter
2012-09-13 by teknochaman
AFAIK gcode is programming code for CAD/CAM software to routing holes in the drilling process Wondered if bundle software come with X/Y axis easy design
Re: [Homebrew_PCBs] Re: More on - Produce Quick & Cheap PCBs with a CNC paper cutter
2012-09-12 by Mark Lerman
Mike, I strongly agree with your goal(s). It would be awfully nice to be able to produce a usable pcb in under 10 minutes from design to finished board. I use
Re: More on - Produce Quick & Cheap PCBs with a CNC paper cutter
2012-09-12 by Mike Sinclair
Yes, I did use a Dremel extension but the one that Dremel supplies in some kits and you can buy separately is too stiff and is a fairly significant load on the
Re: [Homebrew_PCBs] Re: More on - Produce Quick & Cheap PCBs with a CNC paper cutter
2012-09-12 by Mark Lerman
I would guess that there s a lot of runout on this, which does limit the minimum trace width. One thing I might try when my Sillhoute comes in is to use a
Re: More on - Produce Quick & Cheap PCBs with a CNC paper cutter
2012-09-12 by tda7000
I think he s using a flexible shaft extension like this: http://www.dremel.com/en-us/attachments/Pages/ProductDetail.aspx?pid=225-01
Re: More on - Produce Quick & Cheap PCBs with a CNC paper cutter
2012-09-12 by teknochaman
Amazing idea using a Dremel. btw, does anybody know which is the pictured Dremel model ? That will help to understand works that can be done with it Mine is
Re: More on - Produce Quick & Cheap PCBs with a CNC paper cutter
2012-09-11 by Mike Sinclair
Mark - Great o your purchase.....I don t think you ll be disappointed. Soon I will post what I had to do to get the Dremel extension handpiece fitted to the
Re: Spray Etcher
2012-09-10 by cunningfellow
I ve just built another one for the purpose of documenting it. I will finish taking photos and write up the whole thing this weekend. The whole thing takes
Re: Spray Etcher
2012-09-10 by jcarlosmor
Hi All, Any update on DIY spray ecthing systems, or at least about the suitable commercial pumps? Regards.