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Re: Proxxon TBM115 on it's way


 

On Mon, 4 Mar 2019 08:52:31 -0600, you wrote:


If you look at the TRF film, you should see completely opaque areas,
and completely transparent areas. Any transparent area with speckles
indicates that the film was trying to fill too big a gap.

The only problem with the sharpies is that they either have too large
a tip (and the smaller tips can damage the toner), or they don't put
down enough liquid, and only seal parts.

Depending on how fine the lines are, you can have to go over your
repairs to repair them.

Oh, and the only color that seems to work well is black.

You might want to try the "indelible, permanent, industrial grade" of
sharpie, there does seem to be a difference.


Harvey






On 3/3/2019 8:27 PM, Rob via Groups.Io wrote:

Using the EBAY yellow toner transfer paper



I tried the cheap EBAY TRF :



and just for the fun of it bought the shiny metallic gold TRF

for the grandchildren projects on paper.

more detailed etch process:



Noting that I would rather manually trace ALL of the toner traces with
a felt tip permanent marker

because that way I KNOW if there are any big missing pads or traces.

?????????????????????????????????????????????????? Pressing TRF will
NOT fix those spots.

???????????????????????????????????????????????????? Pressing TRF will
fix the porous nature of the toner.

My PRE toner press board preparation consists of sanding with a fine
grit sand paper then washing with pure acetone.

I have gotten very consistent results again and again and again but
once in a while I get a particularly gruesome toner transfer.



with considerably more missing toner spots.

I don't freak out... I know I just run over the traces with a
permanent marker and clean it up.



Good info Rob. The sharpie is our friend. So you are not a fan of the
TRF then I see. I guess if you have thick toner and it all transfers
perfectly then you should be done. But on finer traces etc the TRF may
help, but use a Sharpie for insurance.

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