On 12/08/2018 03:15 PM, bitrex wrote:
On 12/08/2018 06:01 PM, bitrex wrote:
On 12/08/2018 01:13 PM, Ralph Mowery wrote:
In article , says...
Thanks, I managed to pull it off by scraping away the mask, then lot of
flux, tinning, and tiny strand of wire method. Patched up the third
trace in from the bottom and video card boots into Windows now and
checks out OK, runs shader tests etc. as it should.
At age 40 I still test about 20/20 in my right eye, the left was that
way too at one time but worse now, but was able to nail the positioning
with tweezers and a fine tipped iron freehand, pirate-style this time.
I should probably invest in a good microscope, never needed corrective
glasses so far in life but check back at 45.
Glad you got it going.
I could see close up very well and not so great at a distance.
Somewhere around 40 my close up started going, so bifocals for me. Now
I see better at a distance,but not so good up close at 68.
I messed around with several inexpensive devices and never could get
much out of them for the PC and SMD work. The ones that used a computer
monitor did not work because I could not get the hand/eye to co-ordinate
looking out and working down. Seems like most magnifying glasses had to
be too close to the work to do any soldering.
Bought an Amscope 4000z or could be a 400z for around $ 200 shipped and
it works very well for me. There is about 6 ot 8 inches of distance
from the bottom lense to the work piece. I am sure there are lots
better ones out there ,but for a hobby and not business, it is fine for
me.
I found that a cell phone with a "magnifying glass" app that uses the
rear? front? whatever camera it is that isn't on the display side, to
project a magnified image to display, and a set of these:
https://www.amazon.com/gp/product/B01MTWLF2Q?pf_rd_p=c2945051-950f-485c-b4df-15aac5223b10&pf_rd_r=G6E38TPW6N236D8RSCKH
They wanted $10 for one of those at a yard sale, but I didn't want it
that much :-(
Makes a pretty decent expedient "microscope." Clamp the work piece in
the lower grips horizontally, and then most phones are lightweight and
thin enough nowadays that the upper grips will clamp it above, then peer
into the display. The camera LED makes a nice flashlight when left on
continually (though really drinks the battery.)
If you can hold a jeweler's loupe over the camera with two fingers while
you operate the phone/camera with whatever other fingers are available,
you can get a pretty good shot.
https://photos.app.goo.gl/v5PwuC9ti6yMrqGf8
Left is a 14x ophthalmologist's magnifying lens. Right is a 8x
jeweler's loupe. Motorola Mogo G5plus.
The ophthoglasses are really expensive. This one was $125 used
somewhere on line. A used 20D is $250. I got it for a buck at a yard sale.
It really gripes me that the camera is too far from the edge to permit
use of those cute little clip-on lenses you can get on ebay. I had some
for a previous camera, and you really need to use a tripod with the
macro lens and the field of view is really tiny.
sort of like this (though the grippers are reversed here from what's
ideal, this was an early experiment 
https://www.dropbox.com/s/i4b2on7yy1n9u14/Photo%20Dec%2008%2C%202%2019%2007%20PM.jpg?dl=0
--
Cheers, Bev
"Tell someone you love them today, because life is short.
But scream it at them in Klingon, because life is also
terrifying and confusing." -- D. Moore