My apologies, I didn't realise you lived in Greece so did not appreciate
the difficulties which you are having
Anyway, right at the moment I don't need to do anything about it as I
have a Meteor Siegen roller transport processor which handles paper up
to 40cm wide. but its not exactly a "table top" arrangement - the dev
and blix tanks are 9 litres each.
So, I dont know if any of this is any use, but here's a few things which
might possibly help.
First, before I got the Meteor processor I was using a Cibachrome
processor which I picked up cheap on eBay. You probably know that
Cibachrome is a 24 degree process which I think is 3 minutes per bath. I
fiddled about with the thermostat bit and changed the drive gears so
that it was running at 45 seconds per bath. I don't think anybody is
processing Cibachrome any more so its possible that some of these things
are still around. Anyway, it might be possible to adapt something for
your use. Failing that, there's some other tabletop processors from
Durst and other makers which may be worth considering.
Alternatively, you might be able to develop a technique for daylight
processing by popping the paper in to a film developing tank. If you
leave the film spirals out then you can easily stick a 5x7 paper in
around the edge then pop the lid on and carry on in daylight
Second, I have heard some reports from somebody on
photo.net saying that
they have had some success with RA4 processing in open dishes. Obviously
this has to be done in total darkness unless you can find one of those
(almost useless) colour safelights. If you are working in the dark then
45 seconds per bath can be a bit tricky, so I think he ran the dishes at
maybe 20 or 24 degrees, and adjusted the time to about 3 minutes ?
Keeping dishes at a constant 38 degrees is a bit of a non starter
anyway, so you need to spend a bit of time fiddling about to work out
some sort of process.
Basically, there is a number of ways that you might consider RA4
processing WITHOUT using a roller transport processor at all.
Third, unless you have some overpowering reason for not doing so, I
would strongly advise you to forget about the "filter drawer" techniques
and simply get a proper colour enlarger. You then dial up the filter
density required.
If you are doing any B&W processing then multigrade papers seem to
assume the use of a colour enlarger anyway - I don't even know where to
get graded papers from these days (no - DONT bother to tell me)
Also, don't forget that a large chunk of B&W printing is done using B&W
RA4 paper anyway, to save the labs running a separate "normal" B&W process.
One of my earliest enlargers was a Durst 606 with a filter drawer but I
am sure that it dated back to the sixties. Basically, I think additive
systems and filter drawers went out with the Ark
AT