passing .064 material through the stock H200 was an exercise in nasty
noises. .032 did just fine though. post mods (see next paragraphs)
it mostly works ok.
the mods did 3 things, iirc, 1) slowed the speed down to improve the
heating with each pass, 2) increased inter roller spacing and 3)
attempted to increase the outfeed plates spacing. I still had
problems with .064 stock jamming in the outfeed so I created 2 little
spacers for the outfeed plates. I used .064 FR4 and cut them to fit
over the little dimples on each side of the outfeed plates. The
plates sandwich the spacers and keep them at least .064 (+ copper
thickness) apart. This did the trick - no more jams.
sorry, i didn't take any pics and I'm not taking that damnable machine
apart again - even if it dies (I'll have to find a chicken motor...).
The spacers are about 1 cm x .5 cm. I cut them to stay out of the
feed path.
On the carrier. I use children's construction paper as a carrier. I
have to feed the assembly through the H200 20 times to get good
heating for toner adhesion. This more than other have reported and
some day I'll figure out why (I suspect my temp is a little low).
without a carrier, the paper with the artwork sometimes slips.
Phil
--- In
Homebrew_PCBs@yahoogroups.com, Robert Hedan <robert.hedan@v...>
wrote:
> Phil,
>
> I can't speak for the H200, but from the point of view of the H300,
the mods
> are useless. I can't for the life of me figure out how it alters
anything.
> Had you tried passing a 1/16" PCB through the H200 before the mod?
I would
> have liked to know if you observed ANY before and after difference.
>
> I know the H300 and 200 might not share the same construction and
framework,
> but I don't think that's the case. I think they only difference if
width of
> the rollers. I think they share the same mechanism, it wouldn't make
> business sense to have so many different frames in a line of
products (just
> change the frame and roller lengths). The pics in the Pulsar directions
> 'appear' to be identical to my H300 except for size. I suppose you need
> both laminators side by side to say for sure.
>
> Before you start cutting plastic on your 200, take it apart for
yourself.
> Look at how the rolls are attached to the chassis; that shiny metallic
> framework that takes up most of the space.
>
> The only mod that might do 'some' difference is the cutting of the
tab, it
> might give the mechanism a bit more play when you push on the tab. That
> might give you more movement of the rollers to get a stuck PCB out
of the
> mechanism, but that's about all I can figure out. All that tab does is
> rotate a gear using a small tooth.
>
> 1/32" PCB went through the H300 beautifully. I made one mistake, I
used a
> piece of paper to act as a carrier; as suggested on the H300 casing.
Big
> mistake, I think the carrier prevented adequate heating of the transfer
> material. It is most obvious along the edges of the PCB, the toner
easily
> flakes off a perfectly clean board. I believe the extra thickness
of paper
> relieved roller pressure along the sides. The center area of the
artwork is
> perfect, no flaws.
>
> I'm making another test tonight after my online race (woohoo, I love
it).
> I'm cleaning the toner off with acetone and starting the process
over. I'll
> post a pic of my first good PCB, all my attempts so far are
embarassing...
>
> Robert
> :)
>
>
> -----Message d'origine-----
> De : Homebrew_PCBs@yahoogroups.com
[mailto:
Homebrew_PCBs@yahoogroups.com] De
> la part de Phil
> Envoyé : juillet 23 2005 16:53
> À : Homebrew_PCBs@yahoogroups.com
> Objet : Re: RE : [Homebrew_PCBs] Experimental method
>
>
> Robert, have you mod'd the GBC for thicker material? The pulsar
directions
> are ok (just ok) for the 200. I would not force the laminator too
hard, the
> plastic gears on the 200 do not look like they can handle much stress.
>
> I believe that .032 PCB material goes through and unmod'd 200 just fine.
> I've fed it myself and there was aposting about 6-9 months ago on
that topic
> as well. I may have some .032 -- need to check my stock.
>
> Phil
>
>
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