Metal Plate Sources?

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Re: Metal Plate Sources?

Postby Face » Sat Sep 30, 2017 6:56 pm

The LED "white" daylight are around 5000K - but as usual, varies.
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Re: Metal Plate Sources?

Postby willbird » Tue Oct 03, 2017 7:42 am

http://www.ebay.com/itm/250-1-4-Mill-Fi ... xy2YtRyQxy

there is 24x36x .250 aluminum plate priced not TOO bad, and if you found something else the seller had that you wanted for $25 to make it a $100 order the shipping is free. No affiliation I just searched Ebay for aluminum plate.
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Re: Metal Plate Sources?

Postby deanimator » Tue Oct 03, 2017 3:25 pm

The rails worked great. Thanks.
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Re: Metal Plate Sources?

Postby deanimator » Thu Nov 02, 2017 1:03 pm

A couple of weeks ago, I stopped at Bed, Bath & Beyond to look at cutting boards, since some people recommend them as a base for macrophotography.

They had a nice thick and heavy one for a about $40.

I cut my extra t-rail in half and mounted the pieces as on the previous mount.

The cutting board works great. It's heavy enough to be stable (after applying rubber feet to the bottom). I don't even need to clamp it to the table top.
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Re: Metal Plate Sources?

Postby willbird » Wed Nov 22, 2017 8:00 am

deanimator wrote:A couple of weeks ago, I stopped at Bed, Bath & Beyond to look at cutting boards, since some people recommend them as a base for macrophotography.

They had a nice thick and heavy one for a about $40.

I cut my extra t-rail in half and mounted the pieces as on the previous mount.

The cutting board works great. It's heavy enough to be stable (after applying rubber feet to the bottom). I don't even need to clamp it to the table top.


Is that maybe UHMWPE ?? We use UHMWPE for a lot of stuff at work....they just refer to it as UHMW.....I love mass market found materials at retail that are way cheaper than buying in other ways :-).


Ultra-high-molecular-weight polyethylene (UHMWPE, UHMW) is a subset of the thermoplastic polyethylene. Also known as high-modulus polyethylene, (HMPE), or high-performance polyethylene (HPPE), it has extremely long chains, with a molecular mass usually between 3.5 and 7.5 million amu.[1] The longer chain serves to transfer load more effectively to the polymer backbone by strengthening intermolecular interactions. This results in a very tough material, with the highest impact strength of any thermoplastic presently made.[2]
UHMWPE is odorless, tasteless, and nontoxic.[3] It embodies all the characteristics of high-density polyethylene (HDPE) with the added traits of being resistant to concentrated acids and alkalis, as well as numerous organic solvents.[4] It is highly resistant to corrosive chemicals except oxidising acids; has extremely low moisture absorption and a very low coefficient of friction; is self-lubricating (see boundary lubrication); and is highly resistant to abrasion, in some forms being 15 times more resistant to abrasion than carbon steel. Its coefficient of friction is significantly lower than that of nylon and acetal and is comparable to that of polytetrafluoroethylene (PTFE, Teflon), but UHMWPE has better abrasion resistance than PTFE.[5][6]
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Re: Metal Plate Sources?

Postby deanimator » Fri Nov 24, 2017 5:27 pm

willbird wrote:Is that maybe UHMWPE ?? We use UHMWPE for a lot of stuff at work....they just refer to it as UHMW.....I love mass market found materials at retail that are way cheaper than buying in other ways :-).

Nope, it appears to be good old fashioned wood. It certainly drills like wood.

I got the last of my gear for using a microscope objective on my camera today. I did a live view test with a 4x finite objective on the end of two sets of M42 extension tubes. For a subject I used a 148gr. .38 Special wadcutter round stood on its nose. The rim looked like the edge on view of a manhole cover.
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Re: Metal Plate Sources?

Postby AlanM » Mon Nov 27, 2017 9:13 am

You might find this interesting.
The stop can be re-purposed easily as a light mount.
https://www.banggood.com/800mm-T-slot-T-tracks-with-Miter-Track-Stop-Kit-For-Router-Table-Woodworking-Tool-p-1202033.html
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Re: Metal Plate Sources?

Postby deanimator » Tue Nov 28, 2017 1:42 pm

AlanM wrote:You might find this interesting.
The stop can be re-purposed easily as a light mount.
https://www.banggood.com/800mm-T-slot-T-tracks-with-Miter-Track-Stop-Kit-For-Router-Table-Woodworking-Tool-p-1202033.html

That's more useful information. Thanks.

Here's a shot with the objective, the swiveling part of a cuff link:

Image
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Re: Metal Plate Sources?

Postby deanimator » Fri Dec 15, 2017 5:09 pm

So far, I've been very pleased with the cutting board as a base.

Still, living across the street from I-90, there are some vibration issues.

So, I got some thick sorbothane feet to replace the small rubber feet that it sits on now.
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