Chriske Posted October 5, 2021 Share Posted October 5, 2021 And while we're busy drawing and printing SaturnV parts, I have some spare time at hand so I started building JWST, same scale as HST I made a few years back(1:7). In this project there are (almost) no printed parts. JWST will be 3m long and 2m wide. The primary mirror will be almost 1m diameter. Lucky me these hexagonal mirror are for sale, they have a 'golden' reflection layer and on top of it they do have the correct size for this model. The only printed parts for this project are the primary mirror holders. These holders have different angles to simulate the curve of that 1m mirror. For testing I use regular mirrors to avoid scratches. When all is done I'll glue the 'golden' one in place. 13 Link to comment Share on other sites More sharing options...
Chriske Posted October 19, 2021 Author Share Posted October 19, 2021 Busy assembling JWST primary mirror. 12 Link to comment Share on other sites More sharing options...
tomato Posted October 20, 2021 Share Posted October 20, 2021 Looks brilliant, very impressive rate of progress, you should be on the 1:1 scale project.👍 1 Link to comment Share on other sites More sharing options...
rwillett Posted October 20, 2021 Share Posted October 20, 2021 That looks great, how much filament will you go through? Will it actually work? Rob Link to comment Share on other sites More sharing options...
Chriske Posted October 21, 2021 Author Share Posted October 21, 2021 19 hours ago, tomato said: Looks brilliant, very impressive rate of progress, you should be on the 1:1 scale project.👍 To late, JWST will be launched next month...😁 Link to comment Share on other sites More sharing options...
tomato Posted October 21, 2021 Share Posted October 21, 2021 Just now, Chriske said: To late, JWST will be launched next month...😁 I agree it does finally look to be happening, December now I think. Boy, there won’t half be some clenched cheeks around on that day, let’s hope it all deploys as it should, no hope of a repair mission this time. Link to comment Share on other sites More sharing options...
Chriske Posted October 21, 2021 Author Share Posted October 21, 2021 11 hours ago, rwillett said: That looks great, how much filament will you go through? Will it actually work? Rob Will it work...? Well, I do not know yet, just like its big brother it needs lots of testing..😉😁 Compared to the other rocket projects I've posted here there's not to much printing involved this time. The mirror supports a few minor parts will be printed. The rest is plywood, aluminium poles, some steel cables and the mylar sheets. Link to comment Share on other sites More sharing options...
rwillett Posted October 21, 2021 Share Posted October 21, 2021 Please keep us up to date. I love this sort of stuff and I know I should be working, but I'd much rather follow this down I run my own business so it's my decision really Thanks Rob Link to comment Share on other sites More sharing options...
Chriske Posted October 21, 2021 Author Share Posted October 21, 2021 Hold your horses Rob...!..😳 This thing will never work, it was never intended to do so. It's only a 1:7 scale model to be added to the rest of the models in our local observatory. The mirrors are flats. I was lucky that the set hex. IKEA mirrors are exactly the size I needed. They come in a set of 5 'aluminium' + 5 'goldisch' coating. So in the end I'll end up with 20 alu hex. mirrors. with no purpose. Link to comment Share on other sites More sharing options...
gazza25 Posted October 21, 2021 Share Posted October 21, 2021 awesome Link to comment Share on other sites More sharing options...
Ian Thrax Posted October 21, 2021 Share Posted October 21, 2021 Brilliant project, more pictures pleases👍 Link to comment Share on other sites More sharing options...
Chriske Posted November 25, 2021 Author Share Posted November 25, 2021 Still at it... ETL maybe next week... 7 Link to comment Share on other sites More sharing options...
Chriske Posted December 3, 2021 Author Share Posted December 3, 2021 (edited) Busy assembling all parts. I hope to hang it on the ceiling by end of next week. Telescope nearly done. Only secondary mirror to glue into into its holder. Edited December 3, 2021 by Chriske 6 Link to comment Share on other sites More sharing options...
Chriske Posted December 3, 2021 Author Share Posted December 3, 2021 This one is almost finished also. It needs the large protective shields to have it done. It is the largest part of JWST. When finished it measures 3x2 meter. The real thing is 20x14 meter...😳 This is how it looks like inside. When it is all done a thick 50mm pole will be mounted through both parts, the telescope part and this one. That pole hold it all together. One of the holes for that pole is visible at the bottom side of this part. 1 Link to comment Share on other sites More sharing options...
Chriske Posted December 5, 2021 Author Share Posted December 5, 2021 ETL will be Thursday afternoon next week btw...😉 No delays are expected so far...😀 Link to comment Share on other sites More sharing options...
maw lod qan Posted December 5, 2021 Share Posted December 5, 2021 Another amazing project! Well done! Link to comment Share on other sites More sharing options...
Piero Posted December 5, 2021 Share Posted December 5, 2021 Wow! This is a great project and is coming out really well! Congratulations! Looking forward to seeing how it evolves! Link to comment Share on other sites More sharing options...
wimvb Posted December 5, 2021 Share Posted December 5, 2021 On 21/10/2021 at 14:51, Chriske said: Hold your horses Rob...!..😳 This thing will never work, it was never intended to do so. It's only a 1:7 scale model to be added to the rest of the models in our local observatory. The mirrors are flats. I was lucky that the set hex. IKEA mirrors are exactly the size I needed. They come in a set of 5 'aluminium' + 5 'goldisch' coating. So in the end I'll end up with 20 alu hex. mirrors. with no purpose. I once read about a lad who had glued small pieces of a flat mirror to the inside of a satellite dish. He stored it in (his parents') garden shed. Which burned down one sunny day ... Mind where you point that model on a sunny day. 🙂 2 Link to comment Share on other sites More sharing options...
Chriske Posted December 7, 2021 Author Share Posted December 7, 2021 Of course I did not made these large sunshields the same way as the real thing. I had to come up with something completely different. I had to stretch a thin steel cable around bolts and used a selfmade cable tensioner. This is what I came up with. 2 Link to comment Share on other sites More sharing options...
Chriske Posted December 10, 2021 Author Share Posted December 10, 2021 No 'launch' yesterday due to some problems with the large solars screens. Most probably it will be launched early next week. Link to comment Share on other sites More sharing options...
UKDiver Posted December 10, 2021 Share Posted December 10, 2021 34 minutes ago, Chriske said: No 'launch' yesterday due to some problems with the large solars screens. Most probably it will be launched early next week. Totally in keeping with the original. I'm looking forward to deployment. 1 Link to comment Share on other sites More sharing options...
Chriske Posted December 19, 2021 Author Share Posted December 19, 2021 ...still at it... Had lots of problems(the same as my NASA colleagues...🤣) with the solarshields. But the last version seems to work. With a bit of luck ours will be hung next Wednesday. Fingers crossed... 9 Link to comment Share on other sites More sharing options...
Chriske Posted December 21, 2021 Author Share Posted December 21, 2021 Today JW will be fully assembled for the first time, but will not be hung as planned. It will be placed on top of a table instead. Our astronautics specialist will make short clips and add comments about JWST and use these clips during Urania livestream when the real JW is launched. Most probably our JW will finale be hung in our planetarium next week. 2 Link to comment Share on other sites More sharing options...
Chriske Posted December 21, 2021 Author Share Posted December 21, 2021 I wonder, are there other JWST scale models built by amateurs...? Link to comment Share on other sites More sharing options...
Chriske Posted December 21, 2021 Author Share Posted December 21, 2021 Almost done, ok for the clips to make, but some minor things to do before completely done.. 28 Link to comment Share on other sites More sharing options...
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