I'm guessing the angle of the thread is about 60 degrees? You could try a very fine Dremel wheel but you'd have to run it at 30 000 rpm or more and take...
On Wed, 01 Mar 2006 09:16:07 +0100, Don Williams <don.williams@...> ... I would be reluctant as hell to grind glass on my lathe - think of where the...
Hi, Duplicating files on the same hard drive is only a partial solution because there are many hard drive failures that make the entire drive inaccessible. A...
I suspect the original piece had molded rather than cut threads. You will go nutso attempting to cut threads in glass tubing. A better approach might be to...
Forgive me for jumping in here, but I need to make note that Balplans were in production for many different kinds useage; not exclusively for metallurgical use...
Hi Gregg, The "metallurgical" is the second Balplan stand I assembled. The first one is a pretty standard five objective triocular stand. It has a standard...
Hello Mark and Marty, Great points, Mark - I did not mean to suggest there were no other Balplan configurations than the metallurgical unit that Marty...
More than likely, you have already done more to misalign the microscope than the condition it was originally in. An expert would have carefully inspected the...
On Wed, 01 Mar 2006 19:27:34 +0100, Mike Whittome <optekusa@...> ... But think what you will have learned about your engine at the end of the day! ;-) I...
An interesting point about all this is that a 'perfectly' aligned bino head on any microscope only suits a perfectly aligned human being. With age most peoples...
I am as guilty as anyone on this tread. For a while it was good for us all in reminding us the need to have a good back up plan or be faced with consequence of...
I see your point here. My eyes still adjust fine to position (although the focussing range is extremely different on them, almost as if one is for near viewing...
I got a scope for the 1st time last spring and am playing with it at the moment. I Read the Eric Graves book and played with some crystals and some polarized...
You can use an o-ring from the hardware store (plumbing section, from one of those 'assorted' o-ring kits). As far as a glass filter, surplusshed.com used to...
Ken I have had great success with old very second-hand polarising filters for camera lenses. Larger ones to fit over the light source below the condenser, and...
Hi Gregg, FWIW the halogen subbase utilizes a very conservative "old school" transformer and rheostat to power the 6v halogen lamp. You can't specify a more...
Hi, First: I'm pretty sure I saw some nice polarizing filters at Edmunds website recently. It's worth a check. To the original poster: In a "real" polarizing...
... Those diamond tools are very small, such as a dentist might use. I would have thought something larger (perhaps 0.5" to 1" OD), such as the cutoff wheel...
I'm guilty of starting this off-topic thread: This group is a tiny one compared to most of the others I've been with over the years and so it's odd that we...
... It's certainly a concern. If doing something like this (using the TP grinder) I hook up a big shop vac and put the shnoz right next to the action by...
... Nope. I looked. It looked like ground glass in the threads. It was made in Germany in the 20s or 30s. ... Very likely so. 8=))) ... Unfortunately, the...
Hi, The fundamental issue is that hard drives specifically and computer hardware in general is very very reliable. It is human to give lip service to the need...
The major problem with working glass by grinding or cutting is that you must first remove internal stress by heating the tube as you might due when bending...
How about using a piece of acrylic tubing? Much easier to thread than glass. Btw, does your lathe have an English/metric quick change gearbox or metric...
The stress problem is exactly why I suggested silica. But good quality Pyrex or Duran is probably okay without annealing. But this may be a bit of a gamble....
Hello Marty, I did not intend to offend you with my historical information, however, it is accurate nonetheless. I am not criticizing your instrument or...
Hi guys - I finally bought a microscope and I absolutley love it except for one problem, and I hope this can be fixed as I would hate to have to return it. It...
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