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Lunokhod 2

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About Lunokhod 2

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    Rivet Counter
  • Birthday 03/19/1958

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    Male
  • Location
    Toulouse - France
  • Interests
    Space modelling

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  1. Make sure not to paint the ascent stage silver or aluminium, only Apollo 5, 9 and 10 had this main color for the ascent stage (the NASM LM does not exactly represent LM-5). You can get information on LM-5 (Apollo 11) on my 1/24 LM build (http://spacemodels.nuxit.net/LEM-24/index.htm) and also on my 1/32 LM build (http://spacemodels.nuxit.net/1-32 LM/index.htm).
  2. Lunokhod 2

    Bought a Printer!

    You need to buy a new house, ceiling in France are limited to 2.5 m
  3. Lunokhod 2

    Bought a Printer!

    I used the skin color from Anycubic with a layer thickness of 0.03 mm and an exposure time of 8 s. For the off-time the 6.5s is just perfect and gives you an approximate time of printing very close to the real time. I suppose it would be the same if the off-time is longer. The fact is that the off-time on this printer cannot be less than 6.5 s. My next part will be what I call the unprintable part, these are the RCS panels since the one on the model and the one from NewWare do not have the right dimension (lenght is about 5 mm shorter on the model or NewWare). Originaly I thought about doing it with 3 layers of 0.25 mm styrene sheet but I will try printing it. I call it the the unprintable part because with such a low thickness it cannot be printed on Shapeways. I will see what happens this week-end
  4. Lunokhod 2

    Bought a Printer!

    This is what I did but the support were not strong enough to support the weight of the resin. Filling the hole was the solution. For the equivalent part on Shapeways there is a hole because what is important there is the amount of matter. For a home printed part that is not so important, the part is really less expensive than on Shapeways. Furthermore on a DLP printer the printing time depends on the number of layers, so for a given Z accuracy it depends on the Z dimension of the part which means having a hole or not will not modify the printing time (it is not true with a SLA printer like a formlab).
  5. Lunokhod 2

    Bought a Printer!

    Carrying on with the SM aft heat shield. I thought it would be a success the first time but since I decided to have a big hole in the middle, the lower part that was not sustained creeped a bit I eventually filled the hole and the part printed correctly, still on the learning curve but learning more and more.
  6. Lunokhod 2

    Bought a Printer!

    Your settings are pretty much the same as mine except I used 0.03 mm for the layer thickness and 60 s and 5 for the bottom layer. I subcribed already to the photon group on facebook. I am more confident now that I have found the explanation for the splitting . Speaking sanding the build plate, so far the bottom layer with the unsanded plate works quite fine for me, I have a good adherence so far. I use auto support first and then remove or add supports trying to avoid parts where details could be compromized by a support rod.
  7. Lunokhod 2

    Bought a Printer!

    I am still on the learning curve about 3D printing. This week-end I wanted to print the SM aft heat shield. That is a large piece for the Anycubic photon but I managed to fit it in the working space. Unfortunately after many hours I had to stop, the support bottom splitted and some supports didn't print. Although the parts that printed correctly were nice, there were missing sections here and there. I read in the printer instructions that layer separation could be the result of a bad FEP film, so I decided to change it, I also discovered that I forgot to stir the tank (the resin bottle) believing that doing the opposite of Apollo 13 was the reason for the failure. I tried to print the part two more times with each time the same kind of failure. Furthermore when I cleaned the vat I found pieces of hard resin from the support that sticked to the FEP film which explains why there were missing on the final model. What I did next was to modify the Z=0 position by 0.1 mm i.e. not when I felt the resistance with my sheet of paper but 0.1 mm above as I thought this would maybe eliminate the risk of being too close to the FEP film and stick to it. I was also wandering whether the skin color resin had a different behaviour than the clear green resin sold with the printer so I changed the resin as well, and then success. Well not a complete success since I continued to have the splitting problem. I realized then that the support rods were all all perpendicular to the flat lower surface, the upper surface was also flat but with an angle to the lower surface (when printing the support surface facing you was thicker than the aft part). Looking at the platform I then realized it was levelled on the X axis but not the Y axis as shown in the picture below. How that happened, I think that when I installed the platform onto the platform bracket I didn't push it to the end of it and since the bracket has a shape of a truncated pyramid rather than a cuboid it is possible the platform misaligned. Anyway something I will be checking more thoroughly in the future. Anyway the good news is that I eventually succeeded in printing the complete aft heat shield and that the two parts fit perfectly together. I will put these two parts on Shapeways soon but also decided to make them available on Thingiverse. I created a group called 1/32 scale Apollo spacecraft
  8. Lunokhod 2

    Bought a Printer!

    Success after tilting the part, I choose a 0.03 mm resolution for the layer thickness, a normal exposure time of 8 s and an off time of 2 s. The only problem is that the Slicer program estimated a printing time of 4.5 hrs when it actually took 7.5 hrs. Do you have any explanation about this discrepancy or should I double the time for a good estimate before printing. I am very impressed by the final result.
  9. Lunokhod 2

    Bought a Printer!

    I did my first print today. It was half a success and half a failure. I wanted to print a part of the aft heat shield of the 1/32 service module I am currently designing (the part in cyan below). It's a small part about 5 cm diameter so I didn't want to spend too much time on printing (about 1h30). The layer thickness was 0.05 mm, the normal exposure time 8 s and the offtime 3 s. As you can see on the following pictures half of the part was nicely done with very crispy details such as the rivets but the other part was completely messed up. Two possible explanations, 1) there is a tendancy of succion for flat surfaces towards the liquid resin which can create a deformation, 2) as you can see below there is a hollow in the part where the liquid resin will stay and its only way to get out is if you have a bended side. I think the two things happened together since when the part was finished the remaining liquid resin dropped from the wrong side mainly. So I will try again by inclining the part. I expect it will work this time. Wish me luck. And I also would like to know whether the parameters (layer thickness 0.05 mm, normal exposure time 8 s, off time 3 s) seem correct to you. Thanks for your help
  10. Lunokhod 2

    Bought a Printer!

    I went too fast and didn't realize the figernail device UV lenght was too short, fortunatly I found 405 nm replacement lamps such as https://fr.I am a spammer, please report this post..com/item/2016-New-365-405nm-Replacement-9W-UV-LED-Lamp-Bulb-For-UV-Lamp-Nail-Dryer-Nail/32780119627.html?spm=a2g0w.search0204.3.148.5b0365fcSB57b9&ws_ab_test=searchweb0_0,searchweb201602_2_10152_10151_10065_10344_10068_10342_10343_10340_10341_5724615_10696_10084_5724015_10083_10618_5724315_10304_10307_10820_10821_5724215_10302_5724115_10843_10059_100031_5725015_10103_5724915_10624_10623_10622_10621_10620,searchweb201603_56,ppcSwitch_7_ppcChannel&algo_expid=21823d6b-1708-4111-84c7-38a4c927e6b2-21&algo_pvid=21823d6b-1708-4111-84c7-38a4c927e6b2&priceBeautifyAB=0
  11. Lunokhod 2

    Bought a Printer!

    I just bought the Anycubic Photon that I expect to receive in a few days. I am just wandering whether some of you used a UV hardener such as : https://www.amazon.fr/MelodySusie-36W-UV-Séchoir-Ongles/dp/B01FJWXPUU/ref=pd_sbs_147_43?_encoding=UTF8&pd_rd_i=B01FJWXPUU&pd_rd_r=36270de2-a53c-11e8-84bd-173e62a35e8b&pd_rd_w=I2lZ0&pd_rd_wg=PovXW&pf_rd_i=desktop-dp-sims&pf_rd_m=A1X6FK5RDHNB96&pf_rd_p=2c5b8a5e-8e0a-40ca-bd08-715e90b72105&pf_rd_r=HVQ0EDZ4DNR8PGTX1ZQZ&pf_rd_s=desktop-dp-sims&pf_rd_t=40701&refRID=HVQ0EDZ4DNR8PGTX1ZQZ or the printed parts are hard enough and do not need further hardening. Your views please. Thanks
  12. Lunokhod 2

    Bought a Printer!

    I am still contemplating which printer to buy and basically hesitate between the Wanhao duplicator 7 and the Anycubic Photon. The duplicator has a larger printing volume than the photon but the minimum layer thichness is 0.035 mm vs 0.025 mm for the Photon. Apart for the price (duplicator is a bit more expensive), I am curious to know why you choose the photon and not the duplicator.
  13. Lunokhod 2

    1/24 GEMINI 9A part 2

    Excellent built Pete. I am too busy at this time with my CSM to work on this model but I certainly will once the Apollo stuff is completed. Very good reference for any space modeler.
  14. Lunokhod 2

    1/32 Apollo CSM

    It's done, reduction of 10% for the CM and SM parts until the end of July
  15. Lunokhod 2

    1/32 Apollo CSM

    Apollo 11 Sales. For the preparation of the 50 th anniversary of each Moon landing I offer my 1/32 LM model with a 10% reduction over each combo. I intend to do the same during the duration of the 49 th anniversary of each apollo mission from Apollo 11 to Apollo 17. SInce I started late for Apollo 11, sales will last until the end of July. Since Apollo 12 to 14 parts are almost identical to Apollo 11 you will get an other chance for reduced prices. Ascent stage instructions : http://spacemodels.nuxit.net/1-32%20LM%2…/Ascent%20stage.htm Descent stage instructions : http://spacemodels.nuxit.net/1-32%…/Descent%20stage%20GH.htm Combos for Apollo 11 Parts for the Apollo 11 descent stage - 15-Detailled MESA for Apollo 11, 12 and 14 : http://shpws.me/Emot - A11, 12 & 14-WSF-Descent Stage-Detailed MESA : http://shpws.me/MlIM - A11, 12 & 14-WSF-Descent Stage-Simple MESA : http://shpws.me/MlIO - A10 to 14-WSF-Descent Stage-closed MESA : http://shpws.me/Mlwd - A11-FUD-Descent Stage : http://shpws.me/MlIQ Parts for the Apollo 11 ascent stage - A05 To 11-FUD-MS Interior : http://shpws.me/Mnyd - A05 to 14-WSF-Interior : http://shpws.me/MnxX - A10 To 14-FUD-Ascent Stage-With interior : http://shpws.me/MnYY - A05 To 17-FUD-FS Tables & Armrests : http://shpws.me/MnOu - A05 to 17-FUD-FS interior : http://shpws.me/MnO8 - A05 To 17-FUD-Suit Flow Control : http://shpws.me/Mnyf - A05 to 17-WSF-Ascent Stage-with Interior : http://shpws.me/Mmb9 - A05 to 17-WSF-Ascent Stage-no Interior : http://shpws.me/Mm9i - A10 to 14-FUD-Ascent Stage-no Interior : http://shpws.me/MmJg
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