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DIY Bahtinov Focusing Masks with lasers.

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4 replies to this topic

#1 James_826

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Posted 12 December 2012 - 11:33 AM

Yesterday I had some fun at my local Fablab making my own Bahtinov Focusing Masks with a laser cutter. I made one for each of my scopes. I used this website to make the basic models, http://astrojargon.n...Generator.aspx. I then imported the files into Inkskape to add the labels and corner, http://inkscape.org/. Then I was able to cut them out at FabLab in Tulsa, http://www.fablabtulsa.com/. I still need to add rubber stoppers to their backs so they can hang on the scopes and I also need to polyurethane them so the last a little longer. The were made from a sheet of 1/8 tempered hardboard.



The laser cutter doing its job:
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This is the machine doing the cutting:
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One done, the other is cutting:
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The final product completed and back home.
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I can upload the pdf or svg files if anyone likes, but you really should use the website above to custom make your own so the specs are correct.

#2 Mary B

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Posted 12 December 2012 - 07:16 PM

You can increase the number of lines on a mask for full coverage in the online program. It is down in the bottom half.

#3 James_826

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Posted 12 December 2012 - 09:28 PM

You can increase the number of lines on a mask for full coverage in the online program. It is down in the bottom half.


I did not catch that, thank you.

#4 rogercelliott

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Posted 13 December 2012 - 12:34 PM

How much did you pay for this service?
Cheers
Roger

#5 Mary B

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Posted 13 December 2012 - 08:36 PM

I use black opaque acrylic sheet, no painting needed. Only downfall is they are fragile and will shatter if dropped.


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