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Quick/Easy Focus Of Any USB Microscope W Repeatable Results

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Pillar of the Community
mdpmedia's Avatar
United States
3546 Posts
 Posted 01/29/2012  10:28 pm  Show Profile   Bookmark this reply Add mdpmedia to your friends list Get a Link to this Reply
6) Then once the sheet metal screw has been completely and tightly inserted into the hollow movable shaft, you must then saw off the head of the sheet metal screw.

7) If you were able to find a snugly fitting sheet metal screw, the open end of the hollow flexible tubing should screw snugly onto the extended portion of the sheet metal screw that now has its head sawed off.

Also note that the sheet metal screw should now tightly lodge into at least the ‘near' side of the hollow tube; this particular connection point will serve to stabilize the sheet metal screw sufficiently enough to allow you to screw on the flexible tubing by rotating it.

Only the tip of the sheet metal screw needs to slightly enter into the ‘far' side which is primarily used to prevent any upward force being generated from an externally positioned ‘drooping tubing' section that connects to the USB microscope.

NOTE: Be sure to avoid messing with the sheet metal screw too far past the ‘far' internal wall; this condition could prevent the upward/downward movement of the internal shaft if the screw is contacting the interior surface of the main exterior metal housing.
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mdpmedia's Avatar
United States
3546 Posts
 Posted 01/29/2012  10:28 pm  Show Profile   Bookmark this reply Add mdpmedia to your friends list Get a Link to this Reply
8) If you are lucky like me, the diameter of the threads of the ball joint unit will screw right into the other side of the flexible tubing without having any adverse size issues.

9) Remember, that if you find that either of the flexible tubing end connections is not securely fastened, the local hardware store can supply a five minute setting two-part epoxy to use as an aid.

Please do not allow the seemingly lengthy amount of instructional verbiage of this tread to dissuade you from attempting to do this very simple project.

After you get started and follow my advice, it's amazing how great you'll feel to have completed a device that you can brag on that you personally built: a practical instrument which actually saves time and truly assists to produce great pictures more quickly.

fyi,
mdpmedia

PS: I did check out the $ 49 Lighthouse USB stand mentioned in this thread but thought that it lacks the structural stability that this homemade tripod version offers.

Just image what a swinging dog tail would do to a single platform/upright-built Lighthouse USB holder compared to this wide-based tripod creation.

If this tripod is placed upon a slick wooden, metal or glass surface, for example, I simply use the attached rubber foot holders instead of the internally included spikes which are meant for more porous surfaces etc.

Plus I would feel much more comfortable with ‘securely' attaching professional and potentially expensive lighting fixtures to this tripod as opposed to the Lighthouse device.

IMHO
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52Raymo's Avatar
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8517 Posts
 Posted 01/29/2012  10:48 pm  Show Profile   Check 52Raymo's eBay Listings Bookmark this reply Add 52Raymo to your friends list Get a Link to this Reply
Yeah that makes sense, I don't have to worry about a dog.
Oregon coin geek.....*** GO BEAVS ! ! ! ***
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Earle42's Avatar
United States
10038 Posts
 Posted 01/29/2012  11:09 pm  Show Profile   Bookmark this reply Add Earle42 to your friends list Get a Link to this Reply
@mdpmedia

Wow! Thanks for the detailed description. I figured you must use something like JB weld to hold the screw in the tube.

I also have to admit though I still am not quite clear as to exactly what that flexible shaft is or how to find one. I have some flexible drill shafts which your pics remind me of, but obviously these are way different since the flexible tube for the drill wants to retain its straight position and is not pose-able.

Could you post a closeup pic of just the tube so I might get a better "feel" for what it is? I think locating this stuff might be the most difficult part of the project for me - I live in a technologically challenged area

I might have to find a way to improvise.

How much squash could a Sasquatch squash if a Sasquatch would squash squash?
Download and read: Grading the graders
Costly TPG ineptitude and No FG Kennedy halves
https://ln5.sync.com/dl/7ca91bdd0/w...i3b-rbj9fir2
Pillar of the Community
mdpmedia's Avatar
United States
3546 Posts
 Posted 01/30/2012  04:13 am  Show Profile   Bookmark this reply Add mdpmedia to your friends list Get a Link to this Reply
To locate sources for the type of flexible tubing used in this project you might want to Google 'adjustable desk lamp manufacturers' for items such as:

Quick/Easy-Focus-Of-Any-USB-Microscope-W-Repeatable-Results

These are the type of companies that wouldn't mind sending out a minimal amount of flexible tubing just as a sample.

The following photo came from the exact flexible tubing that I used in my project:

Quick/Easy-Focus-Of-Any-USB-Microscope-W-Repeatable-Results

Keep in mind that the ID (inside diameter) and OD(outside diameter)of the requested sample from a manufacturer does not have to possess same exact same measurements as the ones I used in my project.

I would try to remain, however, within plus or minus 10% - 15% of the dimensions I used for my flexible tubing.

The above photographs showing the tubing dimensions used in my project assume that you are using a standard tripod with an outer diameter of 30 mm.

Remember that an excessively larger flexible tubing OD will require that you cut a correspondingly wider longitudinal channel which could potentially weaken the structural integrity of the primary outer tripod tubing.

Therefore, I would strongly recommend that you know the OD of the tripod's tubing before calling for samples. Then specify the OD of the flexible tubing samples so that they do not exceed 33% of the tripod tubing's OD etc.

Finally, never rule out first checking rummage sales or thrift shops since many used old adjustable desk lamps are always for sale at a heavily discounted price.

Good luck,
mdpmedia



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Earle42's Avatar
United States
10038 Posts
 Posted 01/30/2012  06:45 am  Show Profile   Bookmark this reply Add Earle42 to your friends list Get a Link to this Reply
Gotcha! Now I know what you are talking about. Sometimes I can be a little dense!

Thanks again for this. I appreciate your taking the time to be so explicit. Making/building is something I enjoy very much also. but I also can appreciate it when another person who likes to engineer their own solutions has already come up with a good solution.

I am copying/filing all of this away in my projects folder until I research which USB scope I will get.
How much squash could a Sasquatch squash if a Sasquatch would squash squash?
Download and read: Grading the graders
Costly TPG ineptitude and No FG Kennedy halves
https://ln5.sync.com/dl/7ca91bdd0/w...i3b-rbj9fir2
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