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Old 25-03-2020, 08:56 AM
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Lognic04 (Logan)
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3D printing for astronomy - a video

Hi all,
In light of sharing astronomy and telescope making, I've been making videos on different topics lately. Here's mine I just made on 3d printing, an exciting technology for telescope makers! I also hope that 3d printing can bring the "maker" community into astronomy.

https://youtu.be/stZlq4b0dhY

Cheers,
Logan
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Old 25-03-2020, 09:24 AM
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Old 25-03-2020, 09:43 AM
AnakChan (Sean)
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Cheers Logan. Some folks here in WA have been 3D printing small parts (such as bracket holders for the Polemaster, filterwheel covers for a DIY FW, etc.) too. But your video has been enlightening on how it’s done.
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Old 25-03-2020, 01:45 PM
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Lognic04 (Logan)
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Quote:
Originally Posted by AnakChan View Post
Cheers Logan. Some folks here in WA have been 3D printing small parts (such as bracket holders for the Polemaster, filterwheel covers for a DIY FW, etc.) too. But your video has been enlightening on how it’s done.

Thanks! It's definitely really useful!
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Old 25-03-2020, 01:54 PM
Capella_Ben (Ben)
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I could not live without my printer!


Check out Fusion 360 for creating new designs. It is te best free tool that I have come across.

https://www.autodesk.com/products/fu...hers-educators
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Old 26-03-2020, 09:29 AM
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Sunfish (Ray)
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Great video. Very good thinking.
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Old 27-03-2020, 10:35 AM
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Hi Logan.
Great video and I said so on YouTube.
I mentioned adding strength via adding a layer of fibre glass or carbon fibre.
I would like to explain my approach.
If you look at foam core construction as used in boats you find that a rather weak foam when between a thin layer of fibre glass becomes unbelievably strong. A similar approach is used in aircraft.
I am thinking such an approach could be used to reduce flex in 3d printed objects.
Needless to say comparability between the printed material and resin needs to be tested.
If you were to print a unit such as you have and put a few holes in it so resin on both sides could connect and add Matt and resin all over I think the flex would be greatly reduced.
If you have no experience with fibre glass I strongly suggest you learn to use it.
One trick I use is to make something in cardboard and then glass it..well the result is with the cardboard impregnated with resin it becomes in effect reinforced plastic often all that is needed but with an litter thin skin of glass and resin you may be amazed just how strong the card board unit becomes.
I have not used carbon fibre but as I understand things the carbon fibre simply replaces the fibre glass in the build.
I did like your imaging set up. Well done keep up all you are doing and please keep sharing your progress.
Alex
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Old 31-03-2020, 06:46 PM
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iborg (Philip)
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Hi Logan
Thanks for the video and posting here. It finally got me to post this.


I printed a case for an illuminated eyepiece. The idea came from someone else, probably on Thingiverse, but, I think they only posted the STL file. As the sizing (or something) wasn't suitable, I drew this up and printed it.


There are a couple of mounded sections, inside the lid, which allow it to simply have an interference fit to close.
I will post the files on Thingiverse for those interested.


Philip
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Last edited by iborg; 31-03-2020 at 07:49 PM.
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