[pure-silver] Re: Spotting and Microscope Questions
- From: "Koch, Gerald" <gkoch02@xxxxxxxxxx>
- To: "'pure-silver@xxxxxxxxxxxxx'" <pure-silver@xxxxxxxxxxxxx>
- Date: Tue, 12 Oct 2004 17:04:44 -0400
Yes!, the sandpaper came as a pad on a wooden paddle. That brings back memories
of when I took engineering drawing back in college. Wonder if they still make
them in this age of computer drawing programs?
A cardboard nail file should also work.
Jerry
-----Original Message-----
From: pure-silver-bounce@xxxxxxxxxxxxx
[mailto:pure-silver-bounce@xxxxxxxxxxxxx]On Behalf Of Richard Knoppow
Sent: Tuesday, October 12, 2004 4:58 PM
To: pure-silver@xxxxxxxxxxxxx
Subject: [pure-silver] Re: Spotting and Microscope Questions
----- Original Message -----
From: "Koch, Gerald" <gkoch02@xxxxxxxxxx>
To: <pure-silver@xxxxxxxxxxxxx>
Sent: Tuesday, October 12, 2004 12:51 PM
Subject: [pure-silver] Re: Spotting and Microscope Questions
> Scratching shouldn't be a problem since the toothpick
> isn't moved from side to
> side but rather brought down vertically until it just
> contacts the paper and
> deposits a droplet of iodine solution. A razor blade can
> be used to make a
> finer point on the toothpick. Even if a brush is used it
> too should be used
> with a vertical rather than a side to side motion.
>
> The spotting dye should be very dilute and density built
> up slowly with several
> applications. Mix the dye on an old white plate. Unused
> dye can be allowed to
> dry on the plate and re-dissolved with a small amount of
> distilled water
> whenever needed. This saves time since you don't have to
> re-mix each time. If
> you have to fine-tune the color use a toothpick or brush
> to add a small amount
> of another color rather than using an dropper. Store the
> plate with it's dye in
> a ziplock bag. Many expert spotters swear that spit is
> better than water.
>
> Spotting dyes are like any other dyes in that they will
> fade over time when
> exposed to light.
>
> When you get into magnifications greater than that of a
> hand lense hand-eye
> coordination becomes a problem.
>
> Jerry
>
To make a fine point on a toothpick use the same
technique used on drawing pencils, a small card with fine
sandpaper on it. This is more controllable.
---
Richard Knoppow
Los Angeles, CA, USA
dickburk@xxxxxxxxxxxxx
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