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Specimen Holder
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mawyatt



Joined: 22 Aug 2013
Posts: 2076
Location: Clearwater

PostPosted: Sat Sep 30, 2017 10:10 am    Post subject: Reply with quote

Here's a couple items that are available from Wemacro or you can assemble one from components from eBay. The ball heads are available in many sizes and inexpensive, this is a small size.

Best,

Mike


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anvancy



Joined: 05 Dec 2009
Posts: 387
Location: India

PostPosted: Tue Oct 10, 2017 10:11 pm    Post subject: Reply with quote

Yawns wrote:
I use a stage rather than a flexible arm .. I find it easier this way .. very easy to place a background...



the stage allows me to lay several diffusers very easy



for a specimen holder I use a ping-pong ball, cut in 2 halves, filled with plasticine (to make it heavy) and taped back to original position ... the ball over a metal ring ... this is a very chaeap way to have tilt and rotation virtually in any direction and makes tunning the insect positioning very easy



Can you please give some more inputs on that specific image where you have placed multiple sheets as diffusers and then a plastic tube type on the lens? How do you determine how many papers/sheets to use?

Thanks
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SrLobo



Joined: 08 Oct 2017
Posts: 1

PostPosted: Wed Oct 11, 2017 2:35 am    Post subject: Reply with quote

Yawns wrote:


for a specimen holder I use a ping-pong ball, cut in 2 halves, filled with plasticine (to make it heavy) and taped back to original position ... the ball over a metal ring ... this is a very chaeap way to have tilt and rotation virtually in any direction and makes tunning the insect positioning very easy



Thanks for this ping pong design I changed the interior to an old mouse ball, its heavy and being round it's always kept at the bottom.

I pierced the ball with a needle, covered the interior with some tape and hold it with some blue thing used to hold posters in the walls ( blutack )

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Deanimator



Joined: 23 Oct 2012
Posts: 769
Location: Rocky River, Ohio, U.S.A.

PostPosted: Fri Oct 13, 2017 10:32 am    Post subject: Reply with quote

One of my PVC creations:



It's somewhat obscured in this picture, but it gives you some idea. The platform is attached to a mini ballhead, that allows the angle to be adjusted in concert with the angle of the PVC piece onto which it's attached. The front legs ensure that it doesn't fall forward.
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elimoss



Joined: 12 Sep 2018
Posts: 37

PostPosted: Sun Sep 23, 2018 1:18 pm    Post subject: Reply with quote

Anyone know what the long rails are in the post above, which seem to allow the 1/4 20 articulating arms to be screwed in?
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Deanimator



Joined: 23 Oct 2012
Posts: 769
Location: Rocky River, Ohio, U.S.A.

PostPosted: Sat Jun 29, 2019 12:15 am    Post subject: Reply with quote

elimoss wrote:
Anyone know what the long rails are in the post above, which seem to allow the 1/4 20 articulating arms to be screwed in?


Just noticed your question.

Generic t track from Amazon. A bunch of places sell it there.
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Olympusman



Joined: 15 Jan 2012
Posts: 4165

PostPosted: Fri Jul 19, 2019 8:15 am    Post subject: Posing Reply with quote

I use pipe cleaners with either a pin or a small alligator clip on the end.

Mike
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Deanimator



Joined: 23 Oct 2012
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Location: Rocky River, Ohio, U.S.A.

PostPosted: Mon Aug 12, 2019 5:01 am    Post subject: Re: Posing Reply with quote

Olympusman wrote:
I use pipe cleaners with either a pin or a small alligator clip on the end.

Mike


I've tried using stiff single conductor electrical wire with an alligator clip crimped on the end. It still vibrates a bit. It'd probably be ok for 1:1 or lesser magnifications.
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kutilka



Joined: 04 Feb 2010
Posts: 28
Location: Czech republic

PostPosted: Mon Aug 12, 2019 9:04 pm    Post subject: Reply with quote

http://www.entoforum.cz/viewtopic.php?f=26&t=376&p=82174&hilit=ukolmova%C4%8D#p82174
kutilka » 04 zář 2015, 07:42
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Deanimator



Joined: 23 Oct 2012
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Location: Rocky River, Ohio, U.S.A.

PostPosted: Tue Aug 13, 2019 5:19 pm    Post subject: Reply with quote

kutilka wrote:
http://www.entoforum.cz/viewtopic.php?f=26&t=376&p=82174&hilit=ukolmova%C4%8D#p82174
kutilka » 04 zář 2015, 07:42


This unfortunately requires registration... in Czech. Smile
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kutilka



Joined: 04 Feb 2010
Posts: 28
Location: Czech republic

PostPosted: Wed Aug 14, 2019 12:53 am    Post subject: Reply with quote

Sorry.Confused
The subject (beetle on the label) is always in the field of view, only the tilt changes. Unlike, for example, Novoflex.




Version adapted to magnetization on steel plate.
Prototype. (GIF)


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johan



Joined: 06 Sep 2011
Posts: 1004

PostPosted: Wed Aug 14, 2019 6:55 am    Post subject: Reply with quote

same principle as my universal stage - http://extreme-macro.co.uk/universal-stage/
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kutilka



Joined: 04 Feb 2010
Posts: 28
Location: Czech republic

PostPosted: Wed Aug 14, 2019 8:29 pm    Post subject: Reply with quote

My device is optimized for documentary photography of insect collection specimens. Smile

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JohnyM



Joined: 24 Dec 2013
Posts: 462

PostPosted: Wed Aug 14, 2019 11:40 pm    Post subject: Reply with quote

Looks like goniometer without scale or gears.
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Pau
Site Admin


Joined: 20 Jan 2010
Posts: 4790
Location: Valencia, Spain

PostPosted: Thu Aug 15, 2019 1:32 am    Post subject: Reply with quote

kutilka,
interesting holder, although I don't think that it could be patented...similar positioning stages have been made for a century now. I have one made by Zeiss Jena around 1960-70.
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