Serkan Sen Posted January 16 Author Share Posted January 16 The test print is done. The first impression is very promising. Here are the outer wing and eleven parts together with Revell 1:72 Blackbird: More images will follow. Serkan 10 Link to comment Share on other sites More sharing options...
Serkan Sen Posted January 16 Author Share Posted January 16 Here are some images of Revell/Monogram, Italeri/Testors and 3D printed outer wing upper and lower surfaces: I need to check the root fillets and tip leading edge curvature from real aircraft reference pictures. But in overall the shape and level of detail seems very good to me. Next is to check panel line depths and surfaces smoothness. Serkan 9 Link to comment Share on other sites More sharing options...
Serkan Sen Posted January 16 Author Share Posted January 16 To control the panel lines and surface quality the parts were coated with microfiller black primer and sanded with 1000 grits paper: The woodlike texture shows the 0.033mm print layers. The remaining black primer fills the steps and gives a smooth surface: In general the panel lines look fine but for better visibility I will make them a bit deeper. Serkan 13 Link to comment Share on other sites More sharing options...
Pajarito Posted January 16 Share Posted January 16 Quite an impressive work, Serkan! Are these going to be available in 1/48th scale to be grafted onto the Italeri Sled kit? Cheers. Igna 1 Link to comment Share on other sites More sharing options...
Serkan Sen Posted January 16 Author Share Posted January 16 24 minutes ago, Pajarito said: Quite an impressive work, Serkan! Are these going to be available in 1/48th scale to be grafted onto the Italeri Sled kit? Cheers. Igna Thanks Igna, I have already used most of them in my ongoing Italeri and Revell 1:48 conversion projects: Serkan Link to comment Share on other sites More sharing options...
Gondor44 Posted January 21 Share Posted January 21 The way you are going with this you will be able to completly print any version of this aircraft to what ever scale you want! Gondor 1 Link to comment Share on other sites More sharing options...
TheBaron Posted January 22 Share Posted January 22 Pleasingly precise line work Serkan. 1 Link to comment Share on other sites More sharing options...
Serkan Sen Posted January 22 Author Share Posted January 22 On 1/21/2023 at 2:54 PM, Gondor44 said: The way you are going with this you will be able to completly print any version of this aircraft to what ever scale you want! Gondor Yes indeed, I am planning to print an A-12B in 1:32 scales, and maybe YF-12A as well! 2 Link to comment Share on other sites More sharing options...
Serkan Sen Posted April 22 Author Share Posted April 22 Since couple of months it has been quiet on this thread but not fully inactive on the 3d modelling. Finally the rear fuselage and wing/engine cowling modelling of pre production aircraft has been completed: Next step is to bring all the parts together and model few missing things such as main wheel bay doors, fuel dump details. Also the bypass and spike exit louvers will be added to engine cowling. Serkan 8 Link to comment Share on other sites More sharing options...
Serkan Sen Posted April 23 Author Share Posted April 23 Here is a little update from today. Main wheel bay inner door modelling has been finished: Next will be the outer door modelling. Serkan 5 Link to comment Share on other sites More sharing options...
Fritag Posted April 24 Share Posted April 24 On 4/23/2023 at 12:11 AM, Serkan Sen said: Finally the rear fuselage and wing/engine cowling modelling of pre production aircraft has been completed: All those complex curves! Must have been a challenge Serkan. They all look beautifully blended together 1 Link to comment Share on other sites More sharing options...
Serkan Sen Posted April 24 Author Share Posted April 24 36 minutes ago, Fritag said: All those complex curves! Must have been a challenge Serkan. They all look beautifully blended together Thanks Steve. There are still some areas to be improved/corrected. But in overall it looks fine. I will decide how to proceed after doing a test print. To print such big model as a single piece last week I bought a Saturn2 8K printer which is a bit costly but absolutely needed to print in 1:32 scale. Serkan 1 Link to comment Share on other sites More sharing options...
Neffan Posted April 25 Share Posted April 25 On 23/04/2023 at 22:23, Serkan Sen said: Here is a little update from today. Main wheel bay inner door modelling has been finished: Next will be the outboard door modelling. Serkan Hi Serkan, you are incredible ! Good job ! 1 Link to comment Share on other sites More sharing options...
Serkan Sen Posted April 25 Author Share Posted April 25 The outer MLG bay door model has been completed as well: Next task is to add intake louvers which will be a bit challenging Serkan 4 Link to comment Share on other sites More sharing options...
Pajarito Posted April 25 Share Posted April 25 On 1/16/2023 at 1:42 PM, Serkan Sen said: I have already used most of them in my ongoing Italeri and Revell 1:48 conversion projects: Hi Serkan, Indeed, I've watched at each and every project that you've posted on here, but I was wondering whether I could buy a couple of these for the Italeri 1/48 SR-71A kit? I'm just fascinated at the kink on the wingtip; it's something that I hadn't made out on the real thing, and I've seen the Italeri kit completely lacks of, among several other features, that is, so please advise if you're ever going to make them available. The detail is simply worth paying for. Cheers, Igna 4 1 Link to comment Share on other sites More sharing options...
Serkan Sen Posted April 27 Author Share Posted April 27 On 4/26/2023 at 12:31 AM, Pajarito said: Hi Serkan, Indeed, I've watched at each and every project that you've posted on here, but I was wondering whether I could buy a couple of these for the Italeri 1/48 SR-71A kit? I'm just fascinated at the kink on the wingtip; it's something that I hadn't made out on the real thing, and I've seen the Italeri kit completely lacks of, among several other features, that is, so please advise if you're ever going to make them available. The detail is simply worth paying for. Cheers, Igna Thanks for your kind words Igna. The 3D modelling is still ongoing. When all the parts are there you can get in touch me to get the printed parts. After an intensive work the louvers have been added to model: Now I have to find out the best way to print the entire rear fuselage. This will be definitely very challenging. Serkan 7 Link to comment Share on other sites More sharing options...
Pajarito Posted April 27 Share Posted April 27 4 hours ago, Serkan Sen said: The 3D modelling is still ongoing. When all the parts are there you can get in touch me to get the printed parts. Hi again, Serkan Oh, fair enough. When you're good and ready, my mate. I'll be eagerly waiting, tho. Cheers, Igna Link to comment Share on other sites More sharing options...
Serkan Sen Posted May 8 Author Share Posted May 8 Some more progress on model side. The rear fuselage has been divided into inner and outer wing parts. Also inner wing has been divided into four parts to fit them to the printer volume: Serkan 5 Link to comment Share on other sites More sharing options...
Serkan Sen Posted May 8 Author Share Posted May 8 Here are the half models to be printed: Next step is to import these models to chitubox to create print file. Serkan 5 Link to comment Share on other sites More sharing options...
Serkan Sen Posted May 8 Author Share Posted May 8 The stl files have been imported to chitubox tool and the print file has been created in 1:72 scale: It will take 7.5 hours to see the result. In parallel I can finish the outer wing and cowling models. Serkan 5 Link to comment Share on other sites More sharing options...
Serkan Sen Posted May 9 Author Share Posted May 9 First printed parts are here: The surface quality and the panel lines look good in overall. But there is a significant cross-sectional shape distortion in height between the solid support frames. I will improve the model to overcome this issue. Serkan 9 Link to comment Share on other sites More sharing options...
Fritag Posted May 9 Share Posted May 9 2 hours ago, Serkan Sen said: But there is a significant cross-sectional shape distortion in height between the solid support frames Not sure I can see that on the photo’s - save perhaps for some waviness in the solid former/bulkhead in the part on the bottom right hand side? What do you think is the cause? Otherwise the prints look lovely. I’ve forgotten what CAD program you use, Serkan; but whichever, you’re a master at designing structures with complex curves - which is very impressive and a little envy inducing 1 1 Link to comment Share on other sites More sharing options...
Serkan Sen Posted May 9 Author Share Posted May 9 1 hour ago, Fritag said: Not sure I can see that on the photo’s - save perhaps for some waviness in the solid former/bulkhead in the part on the bottom right hand side? What do you think is the cause? Otherwise the prints look lovely. I’ve forgotten what CAD program you use, Serkan; but whichever, you’re a master at designing structures with complex curves - which is very impressive and a little envy inducing Many thanks Steve. I haven't observed before such shrinkage in z direction. I added some stringers and support structures to avoid this nasty result. For closed surfaces like cylinder and rectangular prisms there is no such problem. I am experimenting now to find best result. Soon I will post the comparisons. Serkan Link to comment Share on other sites More sharing options...
Serkan Sen Posted May 10 Author Share Posted May 10 Here are the printed parts with different type of print supports: Replacing the bulkheads with longerones and ribs reduces the shrinkage. Adding vertical struts reduces the shrinkage amplitude but increases the frequency along fuselage. The only way to avoid this to use a thin solid surface (as expected mathematically and physically). This support surface can be removed before assembling the fuselage halves if necessary. Next step is to finish outboard wing and nacelle models and print them as well. Serkan 2 Link to comment Share on other sites More sharing options...
PeteH1969 Posted May 10 Share Posted May 10 Serkan Very impressive printing well done. What is the average cross section thickness of those parts? Pete 1 Link to comment Share on other sites More sharing options...
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