Project Cancelled - O-L's IS - How Not to make a budget Integrating Sphere

Flashlight Modding and DIY Parts
41

Justin, I have used 2 part molding mix that releases with an extremely smooth surface. There is also a paint-on latex version available at Tap Plastics that applies in layers. Maybe a few layers of that on the ball and then layers of paper over that for rigidity. The first layer of paper might need to be laid on a wet coat of the latex. Sand the outside with a pad sander before removing the ball and then paint. Or… have a cold one and let someone else worry about it. By the way, how close did you come to measuring the downwind flight time of a partially completed IS?

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I never measure TTD (Time to Dumpster)

I don’t have a measuring device for that. :smiley:

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Since things didn't work out as planned, and since I don't want to expend more funds into this, I decided to cancel the project. I just do not see any payback with this IS and since I do not even own one ANSI standard light that could be used as a test light, it's a little foolish to do this in the first place. Luckily, I was able to return the majority of the stuff, so I only lost a couple bucks on it.

Thanks for being patient and understanding.

44

I don’t think the main benefit here is an accurate lumen output counter. I think the main return on your $$ investment is that you will have a very consistent, repeatable/accurate way to A-B compare lumen output from one light against another, and a way to accurately baseline compare before and after tweeks and mods.

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That is where having a tool like this is so valuable.

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I just ordered a 16” sphere from Barnards to go with my LED analyzer project (Any interest in a LED/Battery analyzer device?) The price is quite reasonable (go up a couple of inches and it’s no quite so). http://www.barnardltd.com/product.jsp?prodId=1878&catId=950 No way you could justify making your own sphere at that price.

If it works out, I’ll probably get a 24” one.

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OL - How about a Globe? It is old and its still spins on its Axis with no obvious dents or
dings.If your interested i’ll send it to you?

48

Interesting. Is it a metal globe, or some other material? 12" most likely?