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aussie_bloke wrote: Also is it necessary to have that square glass piece between the two condenser lenses?
Anyhow I hope to get cracking on this project soon.
Klaas Robers wrote:In principle you don't need the heat filter, however if you use a silicon diode as a sensor this filter might keep the IR out of the sensor. That gives a much better grey representation of the different colours. But is degrades the sensitivity of the camera as well.
gary wrote:Troy,
The main reason I don't export as an image file is the loss of accuracy caused by doing so. It is much better to print out from the native (vector) format. Unfortunately my programme only allows you to print out to the size of the sheet the printer uses. This is laziness on my part but the main reason is it is extremely difficult to print out multiple pages of a graphic in MFC - it can be done but it could take me about a week to work it out. Instead the idea is you can import the industry standard DXF file into one of a zillion free programmes that will allow you to open or import a dxf file and print it out.
One way is to use the freely available google sketchup - import the nipkow disk dxf file (make sure you have the correct units selected) and then use the following method to print out to scale:
http://support.google.com/sketchup/bin/ ... wer=114462
gary wrote:Oh sorry about that I didn't realise it was only in the pro version.
There are many dxf viewers out there, but perhaps the best way is for me to import it into my sketchup and send you that because sketchup should allow you to print it out at the highest possible resolution and accuracy - the only downside is that it doesn't optimise the number of sheets to print out on - however a couple of extra sheets of paper is a small price to pay.
If you would like to try that send me your dxf file and I'll send back the sketchup dwg.
Actually I was working on a sketchup plugin to draw nipkow disks so perhaps I should finish that off sometime.
The other possibility is to see if your local print shop to print a full size version for you - not sure how much that would cost but you wouldn't think it would be that much. It would be very accurate.
Of course, you could always build yourself a CNC machine like I did and then you don't have to print it out at all I built mine for about $200.
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