Gratings! Who sells them?

[dkumpula]

Thanks, Steve. Good info.

-David

[mixedgas]

Lets see, a single element Lens, a Transparency, and 600/ 1200 DPI laser printer Lets see who figures this out... Hint print at 1 pixel per pixel.. May need to print a few side by side to make the image easier to find. You can change scale to no more then 25x25 mm on the big one.

Steve

[mixedgas]

In re Kallard:

https://www.amazon.com/Ultrafine-Ort...s%2C654&sr=8-1

Litho film is like ISO 20 so you don't even need a dark room, just red light to handle it. It does not do gray scale very well, which is what you need for transform art. Its either black or clear after development. You do that if you don't have a laser printer or if you wish to use a console to create a master....

Steve

[laserist]

That is funny, the 30 year old planetarium projectors all have plastic gratings. I guess we will have to agree to disagree. 😊
[Snip]
Steve

So did the 45 year old laser projectors, but one of the lessons nobody ever seemed to learn: In a planetarium a laser effect should be as bright as it needs to be, and no brighter. One watt - total - from an Ion was plenty for a planetarium.

[masterpj]

Thanks for the links steve!
I'd be down with a group buy from peter mayer.

On the foill. side.. im mixed with the performance on that.. on top of that it need to be pulled straight to likely not have a weird angle of projection.

[mixedgas]

Bill has tried....In the Past, No return emails...
!
We really need a US Distributer..

Steve

[masterpj]

Does it produce lumia like effects? ill buy a sheet and see. I was worried about how much power it would be able to handle since its foil and all.

[mixedgas]

Does it produce lumia like effects? ill buy a sheet and see. I was worried about how much power it would be able to handle since its foil and all.

!
We used to hold it by hand in front of the scan head of a Whitelight 171 at full power. It can take surprising amounts of power if the back side is clean.
Make sure the vendor mails it to you with a cardboard backing. Some of the lessor venders just toss it in a box or envelope.
~
Yes, a Machida is made by stretching a flat fiber bundle across a glass slide, gluing and slicing off the excess fiber. I've tried it by hand, with very short fiber pieces, its difficult without the factory jig.

Steve

[masterpj]

i would be interested to see if pangolin would stock that since its a component not many might end up using rather then an end product..

[masterpj]

Bought that star grating and a bunch of different foils an slides from the seller on ebay.
Will test out!

I assumed the fiber laying wasn't as easy as it sounds as else these manufacturers would make lower cost one without the 350~159 price tag.
Is there any info out there about the jig being used? is it something that can be designed on a high end laser resin printer?