Homebrew PCBs

Yes E-bay is cheaper.

At Capefear, cost for 10' x 24" film is $59.00 with S/H I think it was. they have much smaller size for sampling but it is pretty pricy!! $19 for 12" x 24". 

I pay premium over E-bay because I prefer to have a "regular" supplier. It's the reason I order from DigiKey, and buy Tektronix and HP equipment. 

My sample order from Capefear came very prompt. Well packed, looking very reputable. 

I do not care for grey market items or suppliers where you can't trace back. 

As a reference of how I view things: Some of my cutting tools are cobalt steel with TiN coated material. Not some high carbon steel. Tools themselves, I prefer Dewalt, Bosch, Makita... Prefer it is MADE IN USA or Germany or Japan and not just the label saying USA/German/Japanese company. Most recent outburst was over 6-32 tap. Ordered a replacement tap. Broken one was a cheapie from Craftsman high carbon steel. Flute on the tap was cut so irregular, one of the cutting surface was less than 1/32" wide. Replacement is a cobalt steel, TiN coated 6-32 H3 tap from Ghurring. cost is about $15.00 each.

Been looking for a lathe and mill and I think I'm going to invest in Taig. Not so hot on Smithy or Grizzly. Both are not that accurate. I used Smithy and wasn't impresed. Even their technical spec was bit of a yawn. 

smilingcat,

--- In Homebrew_PCBs@yahoogroups.com, "Jeff Heiss"  wrote:
>
>  
> http://www.polymetaal.nl/siteUK/shopukwork/en-gb/dept_183.html
> 
>  
> 
> The price is on the bottom of the page.  The cost is 24" x 10' for $78 (60
> Euro).  It costs 5.4 times as much as photoresist available on Ebay.  I
> computed 5.4x using the resist I purchased which is 8.3" by 9.7' DuPont
> MM540 for $14.49.
> 
>  
> 
> Jeff
> 
>  
> 
>   _____  
> 
> From: Homebrew_PCBs@yahoogroups.com [mailto:Homebrew_PCBs@yahoogroups.com]
> On Behalf Of Rick Sparber
> Sent: Tuesday, January 08, 2013 8:40 PM
> To: Homebrew_PCBs@yahoogroups.com
> Subject: RE: [Homebrew_PCBs] photo resist. Slightly different material.
> 
>  
> 
>   
> 
> Ms. Smilingcat,
> 
> It looks like very interesting stuff. What bothers me is they said
> "affordable price" yet don't list the price. That usually means it ain't
> that affordable. So what DOES it cost?
> 
> Rick
> 
> -----Original Message-----
> From: Homebrew_PCBs@yahoogroups.com 
> [mailto:Homebrew_PCBs@yahoogroups.com
>  ]
> On Behalf Of smilingcat90254
> Sent: Tuesday, January 08, 2013 6:13 PM
> To: Homebrew_PCBs@yahoogroups.com  
> Subject: [Homebrew_PCBs] photo resist. Slightly different material.
> 
> Some of you have complained that the resist lifts off or gets damaged during
> handling. laying of the transparent image, static electricity causing the
> resist to lift off with the image, vacuum bagging causing more surface
> scratch and so on. 
> 
> and the use of chemicals.
> 
> I just recently ordered a material called puretch from only US distributor.
> claims that the film is good down to 1 mil resolution provided your image is
> that good.
> 
> links to the US distributor: www.capefearpress.com/puretch.html
> youtube videos on the product: www.youtube.com/watch?v=xkGt9nFER1s
> 
> another link:
> http://www.polymetaal.nl/siteUK/shopukwork/en-gb/dept_183.html
> 
> Developer used is sodium carbonate (do not get it confused with sodium
> bicarbonate which is baking soda)
> 
> capefear press has some good information on how to expose without creating
> shadows and the lamp recommended. Good solid information. Application at
> capefearpress is not electronics but rather arcane art form. Far more
> technical than most of us here or using toner transfer method.
> 
> Some advantages: photoresist is protected from handling by a thin plastic
> layer. It is removed when you are ready to develop so that you can't scratch
> or lift off during handling and exposing.
> 
> For photoimaging, they also sell stoufer exposure gauge to help you get the
> right exposure.
> 
> ------------
> For now I think I have Pulsar toner transfer system working well enough.
> Don't need to use lot of pressure. Too much pressure causes the toner to
> "bleed" on the edges. temperature to melt toner is around 100C anything more
> and the toner becomes too thin and the image "bleeds"/run.
> 
> I may still switch over to puretch. Don't need to keep printing images for
> multiple board. higher resolution for use with TQFP with 0.5mm pitch. Pulsar
> is near the limit for 0.5mm pitch.
> 
> ------------------------------------
> 
> Be sure to visit the group home and check for new Links, Files, and Photos:
> http://groups.yahoo.com/group/Homebrew_PCBsYahoo! Groups Links
> 
> 
> 
> 
> 
> [Non-text portions of this message have been removed]
>