On Wed, 02 Nov 2011 23:33:57 -0500, you wrote:
>Been lurking for a while and it's been years since I had Ferric Chloride
>stains on my fingers.
>
>Just a thought or 2 on laminators.
>
>Has anyone tried adapting a plain paper copier fuser roller? Widen the
>gap and slow it down, I don't see why it wouldn't work.
I have one as a potential project, stalled as any number of projects
are due to real life(tm).
>
>When I was repairing them 30 years ago a local Ham bought one of our
>scrap units for the purpose of using toner transfer onto blank boards.
>That was coated paper to transparency then fused to the Copper clad.
>Never laid eyes on it but later I did ask him about it. He changed out
>the adjustment bolts for longer ones to widen the gap between the
>rollers and upped the temp a bit. Silent Key now so exactly how he did
>it may be forever lost.
>
Not that hard. Slow it down, temperature ought to be pretty good if
the board gets that hot, then make sure that you can adjust the
spacing to fit the board.
You'll have to experiment with a few things, I think that pressure is
rather important. Keeps the pattern from spreading when you get it
right.
>When I worked for HP in the late 1990s they were using Laserjets for
>direct printing onto prototype boards. They had the R&D department so I
>doubt that's something I could do in my basement with a vice grips and
>duck-tape...
Laser printer fuser roller, temperature controller, thermocouple, DC
motor with small power supply, Bet you could do it in your basement.
(leave out the tape....)
>
>Still, the modern low end dry toner printers use heat and pressure to
>fuse the toner and it seems to me that they could be used. The fuser
>drums (mostly) have an almost mirror polish and operate as high as 450F.
Old laser jets at thrift stores for me.
>
>Just a suggestion, I have too many Irons in the fire as it is.
Know that one,
Harvey
>
>Tim Hills
>
>In both cases the printers were modified
>On 11/2/2011 22:09, Mike wrote:
>>
>> Hello,
>>
>> Just finished running a 0.062 double sided pc board with Techniks
>> Press and
>> Peel toner transfer through the Harbor Freight Laminator, Model 92499. The
>> toner was put on the Press and Peel using a copy machine at a big box
>> store. After seven runs through the Laminator, the result was mixed at
>> best.
>>
>> First, the circuit was not transfered evenly over the length of the board.
>> Second there was a series of pin holes in the toner transfered to the
>> board
>> - as if a roller in the Laminator is a diamond pattern (or whatever
>> this is
>> called).
>>
>> Haven't opened up the Laminator to see what is inside. Anyone else getting
>> any results using the Harbor Freight Laminator?
>>
>> --
>> 73,
>> Mike, K4GMH
>>
>
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