Homebrew PCBs

Well, the thing is, this is a single sided PCB.. so the 'silkscreen' I'm
trying to do is on the side with no copper.  So I'm doing toner transfer to
that, and it's working great.. toner transfers quite easily, nice and crisp.
But when I do the TRF.. the toner attaches to the TRF and then pulls up from
the board.

 

From: Homebrew_PCBs@yahoogroups.com [mailto:Homebrew_PCBs@yahoogroups.com] 
Sent: Sunday, July 10, 2016 9:01 PM
To: Homebrew_PCBs@yahoogroups.com
Subject: Re: [Homebrew_PCBs] Re: White TRF [3 Attachments]

 

  

I'll throw this out there just in case.....

 

Is the copper really clean?  If water beads up on the copper *anywhere*

the copper isn't clean enough for laser toner-resist....water should just

"spread out" on the copper.  

 

When scrubbing the board with say, "Bar Keeper's Friend powder", before
applying

the toner, pay special attention to the corners.

 

Charlie

 

Made another attempt with the TRF. massive pressure with my iron.  But it
still doesn't work - what is happening is the toner is bonding to the TRF
and when you lift the TRF it takes the toner with it?!  

I'm trying to think of what might be going wrong here. problems with my
toner?  The fact that the boards are FR4?

From: Homebrew_PCBs@yahoogroups.com [mailto:Homebrew_PCBs@yahoogroups.com] 
Sent: Thursday, June 30, 2016 6:14 AM
To: Homebrew_PCBs@yahoogroups.com
Subject: Re: [Homebrew_PCBs] Re: White TRF

  

On Wed, 29 Jun 2016 21:47:38 -0700, you wrote:

>Okay. So yeah.. it just doesn't work at all. Tried the laminator but the
TRF wouldn't stick (probably the laminator's fault.. not hot enough). So
then I did extremely hard pressing with the iron for 10 full minutes. Dunked
the thing in water.. but yeah. Nothing. If anything, the TRF is lifting
toner from the board.

The laminator I use is a simple GBC creative laminator. It's probably
an old model. What you might want is a laminator with a foil setting.

You can try with a simple laser print to experiment with, running the
laser printed paper through the laminator. Dull side to the toner. I
have had occasional sheets where (for whatever reason) the foil
refuses to adhere at all. You simply let the foil cool naturally and
then peel it off. Oil or water is not your friend here.

I'd use small pieces and hold them on with tape.

If the laminator will do a piece of paper, then it's getting hot
enough for that foil. If not, then something is odd. Next step would
be the board, and that will take a while to get hot.

Harvey

>
> 
>
>Kind of disappointed. Oh well. :) They do have white toner printers out
now. $3000+ each though. :)

  _____  

Posted by: "Brad" <unclefalter@...> 

  _____  


 
<https://groups.yahoo.com/neo/groups/Homebrew_PCBs/conversations/messages/34
905;_ylc=X3oDMTJxcm1iYm9iBF9TAzk3MzU5NzE0BGdycElkAzQ1MDUzNjEEZ3Jwc3BJZAMxNzA
1MDgzMjkxBG1zZ0lkAzM0OTA1BHNlYwNmdHIEc2xrA3JwbHkEc3RpbWUDMTQ2ODE3MjM5MQ--?ac
t=reply&messageNum=34905> Reply via web post 

.

 
<mailto:unclefalter@...?subject=RE%3A%20%5BHomebrew_PCBs%5D%20Re%3A%20W
hite%20TRF> Reply to sender 

.

 
<mailto:Homebrew_PCBs@yahoogroups.com?subject=RE%3A%20%5BHomebrew_PCBs%5D%20
Re%3A%20White%20TRF> Reply to group 

.

 
<https://groups.yahoo.com/neo/groups/Homebrew_PCBs/conversations/newtopic;_y
lc=X3oDMTJlZWQwN3VkBF9TAzk3MzU5NzE0BGdycElkAzQ1MDUzNjEEZ3Jwc3BJZAMxNzA1MDgzM
jkxBHNlYwNmdHIEc2xrA250cGMEc3RpbWUDMTQ2ODE3MjM5MQ--> Start a New Topic 

.

 
<https://groups.yahoo.com/neo/groups/Homebrew_PCBs/conversations/topics/3487
1;_ylc=X3oDMTM2cmo4NjQ5BF9TAzk3MzU5NzE0BGdycElkAzQ1MDUzNjEEZ3Jwc3BJZAMxNzA1M
DgzMjkxBG1zZ0lkAzM0OTA1BHNlYwNmdHIEc2xrA3Z0cGMEc3RpbWUDMTQ2ODE3MjM5MQR0cGNJZ
AMzNDg3MQ--> Messages in this topic (8) 

  _____  



 <https://yho.com/1wwmgg> Have you tried the highest rated email app? 

With 4.5 stars in iTunes, the Yahoo Mail app is the highest rated email app
on the market. What are you waiting for? Now you can access all your inboxes
(Gmail, Outlook, AOL and more) in one place. Never delete an email again
with 1000GB of free cloud storage.

  _____  

.