DONE !! CASA CN-235
The content of the box - Vacuformed sheets. That's new to me. I am curious how this one turns out.
Let the show begin.....defining the "parts end" with permanent marker.
Getting closer to the edge with a scissor.
And even more closer with a real sharp scalpel blade.
Scisor and blade exercise is important - because now it starts with sanding. Sanding. Sanding,...
After some time you see the marker shining through...slower and carefully now continuing with a higher grade of sanding paper.
at the end...a small burr get loose from the part. Done. 🙂
how many parts are in the box...um? Ok. See you in a few weeks - have to go sanding
how many parts are in the box...um? Ok. See you in a few weeks - have to go sanding
Okay...well. When putting all those sanded parts together in a trial fit it seems that at the end an aircraft turns out - indeed.
So to get to this point it took some effort...some couple weeks for seperating all the components from the sheet.
The formed parts - and especially the fuselage - is extremely thin. I try to give a lot of support to make it stable and rigid.
Joining the wobbling edge seems a tricky exercise. Try to reduce the effort by support of wooden wedges.
Carving and sanding it in shape is done quick - compared to the plastic sanding of the last weeks 🙂
Some more ribs and frames to make the hull robust.
The front wheel comes in 2 halfes and they should be glued to the gear on 2 small surfaces - a butt joint I hardly trust. So a practicable joint to fix the gear strut and the tyre is not there - Therefore I drilled a hole here....
...and here. A brass tube will allow to join the wheel and the forward landing gear.
After trimming the axle the wheel should slip on easy and I expect that this front wheel assy is now more stable than before.
Details from a CASA 235 nose landing gear.
Scratched struts are on as well as forward lights.
Some wiring here...
...some wiring there.
mmh ... seems ok. Now let's see what we can do with the doors.
The part on the very right of the green sprue is the nose landing gear door. Having seen some reference pictures, I decided to go with the cut-away from the vacu sheet. The doors are usually sandwich composite parts. To imitate the "core -appearance" I will scratch them with styrene...
The real door hinges are goose-necked to support a quick opening by less movement of the strut - some remains from old PE will do....
My "composite doors" with hinges.....
...undergo some dry fit...
The arm lever for the opening mechanism on this CASA is pretty keen.
Another dry fit with actuator struts attached,...
Seems to work, position and angle are not quite right yet, but can be adjusted.
Precautions to avoid tailsitting. I put some lead in radom and cockpit.
The attachment of the tail cone is challenging. The thing is thin and wobbeling - but it should be rigid and strong as is should carry the vertical and horizontal stabilizers afterwards.
I hope this section is consolidated now with my balsa wood construction.
I hope this section is consolidated now with my balsa wood construction.
The idea was to add some guidance for the joints and to bring together the 2 halfes as consise as possible.
With that flush fitting it should work out pretty well (I hope.)
Next issue - fitting the horizontal fins. To support the joint and to assure the correct angle I built in an flat beam of wood.
I did the same on the vertical tail fin.
A view at the wooden "tail wing box".
Trial fit #999. I'm still quite doubtful that all this comes out well at the end...
The tail cone with all the rudders attached.....
2x Engine Cowling. I decided to open up the Air Intakes, the NACAs on both sides of the hoods and the Exhausts.
I used some styrene sheet to scratch the "channel" from the intake to the Engine.
Now it is better, because you can't no longer look through the cowling onto the naked Wing 😉
Also the NACAs are cutted "open" now.
Also the NACAs are cutted "open" now.
Opening the holes for the Exhaust.
...and inserting some bended thin metal sheet to creat my "new" exhausts.
And I did some re-scribing to pronouce the panel lines which are "gone" in the Vaccu forming process respectively by my sanding operations.
Another trial assembly showed that some more front-weight is needed before I close the fuselage halfs. So some more lead balls placed to avoid tailsitting.
Finally I have joint the two halfes of the fuselage and the tail section....
...alot of sprue goo and filler was needed to make a smooth transition of the joint.
The size and position of the doors do not match with the version I need. Interessing that they are correct in size but in a switched location.
Same with the windows,... I need 1 more and the whole pattern slightly shifted to the rear.
So all the engravings for doors and windows will be filled with liquide sprue and sanded over. ...I hate scribing but beside that, some panel lines are gone also and need to be recovered,...
So all the engravings for doors and windows will be filled with liquide sprue and sanded over. ...I hate scribing but beside that, some panel lines are gone also and need to be recovered,...
So here are some pic's of my scribing activities,....
Checking size respectively position of the cargo & pax doors,....
Scribing result on LH side......
...and also RH and underside done.
Here I have already fixed the vertical and horzontal stabilzers onto the fuselage.
The quality of the moulded parts is ...not the best. Some more sanding is needed to get those parts in shape.
Similar to the front landing gear I decided to "support" also the main landing gear with some metal tubes in order to hold the load of the entire kit without breaking wheels loose later on (there is pretty load of lead in the nose part).
Mainlanding gear ready for paint and assembly.
Painting and Assembly done.
Adjusting the landing gear within the bin is quite tricky. No marks or stops are given. A slight movement respectively a slight missmatch between left hand and right hand gear and the whole thing seems to come out of balance - as the span of the wings is intensifying any tiny misalignment. Leveled it out with ruler, blueTack and time...
Made my own stops and after several attempts I found it ok to use glue. Picture comparision showed later that the whole assembly should protrude slightly more - but too late now.
I started a time consuming masking session to protect the main landing gear from next coming (sanding) operations. 😉
I started a time consuming masking session to protect the main landing gear from next coming (sanding) operations. 😉
When closing the Wheel Bin alot of putty was needed in order to close rather huge gaps.
Bottom view after filling & sanding that area.
Side view after fitting the wheel bay to the fuselage.
Mounting the wing to the fuselage started....
Wooden stiffener for the upper wing middle section.
Liquide sprue and Tamyia putty as a gab filler used here and also for...
....adjusting the outer wing panels. Gravity, ruler and protractor are used to level out the wings during glueing and curing to get the sightly upwards position of the wing tips.
Now I have added the engines and the flap track fairings. Putting on some primer is coming closer,....
So the first layer of primer is there. Quite surprising - It looked not that bad.....
....there where only a few minor imperfections that need some filling/sanding and repaint.
I started with aircraft grey to bring some depth effect to the surface...
...more spraying...
...this is my third model where I try black basing/marbeling...quite tough to decide when it is enough...
A thin layer of blueish grey comes as a final coat.
The black anti-icing panels are next,...
Anti iceing panels and the underwing exhaust plume section done.
Unfortunatly I had a bad surface preperation and on the HTP the demasking caused some damage.
Starting the recovery....
Aircraft grey...
...plus some blueish grey on top.
Done. Gloss coat next and then ready for the decals,.....
First session of decaling done...
All decals on and sealed with a coat of gloss acrylics.
After some days of gloss coat cure, I did a very decent oil wash, as the marbeling effect already shows a quite worne out surface.
Giving the propeller blades a first layer of black.
Preparing the antenna.
The installed antenna on the RH side of the vertical fin.
Nose landing gear and bay doors installed.
Underwing section ist done - some minor touch-ups to cover painting flaws were needed
Assembly of the propeller blades.
Yeep. The last "unclued" components...Now...quite busy actually, but I think I need to finish this build this weekend. 🙂 😉
Comments
73 4 October 2020, 19:45
Juergen KlinglhuberStarted my first vacu formed kit. Curious about this journey and what kind of pleasant surprises will wait. 🙂
4 October 2020, 20:05
Juergen KlinglhuberHa -- 😄 crazy, but I thought at least I should have tried it once...Thx for your wished Mirko. I guess I need it.
5 December 2020, 15:03
Chris ParsonsLoving this! I actually just finished my second vac. kit, also a Broplan. An ATR 72...Pictures on here somewhere
5 December 2020, 16:56
David Taylorlooking good so far.Started a Wellesley couple of years back,horrible kit ,its in a box somewhere.LOL
5 December 2020, 17:10
Juergen KlinglhuberChris - I just check out your ATR 72. Great result. Luckely I can skip interior work. But I see already troubles coming along with engine cowling and wheel bay - similar to your ATR kit. This portion of work will become pretty challenging.
5 December 2020, 20:17
Juergen KlinglhuberDavid - fingers crossed that this one will not end the same way - but the more I progress the more I understand why this happend 🙂
5 December 2020, 20:19
Juergen KlinglhuberHi guys - thx for your coments and your "likes". That's good for staying motivated with this bird 😉
19 December 2020, 14:21
Juergen Klinglhuber@ Chris,
and all followers of this build - let me report: Engines done! 🙂 some pic's attached
26 December 2020, 20:42
Juergen KlinglhuberSanding continues,....I have meanwhile joint the fuselage and rear section.
5 January 2021, 11:10
Chris ParsonsSome major plastic surgery here! Brings back memories...
Looking good!
5 January 2021, 14:04
Juergen KlinglhuberThank you Chris & Cuajete for your comments. Motivation on this kit is going up and down periodically 😉
So your appreciation is welcome! thx
7 January 2021, 16:59
Gordon SørensenGreat job, Juergen! Looks like a lot of sanding, but the fuselage looks good!
7 January 2021, 19:01
Juergen KlinglhuberThx Gordon. YES: a lot of sanding, and I'm afraid that it is not over yet 😉
20 January 2021, 19:04
Juergen Klinglhubera little bit of an update on this build - I joint tail and horzontal fins with the fuselage and did some scribing exercise.
20 January 2021, 19:06
Łukasz GlińskiHow come I missed this? My 295 is still waiting, let's see what awaits me 😄
20 January 2021, 19:49
Łukasz GlińskiHave you considered filling the parts, so they get stiff? Like here:
Breguet Br. Bizerte | Album by potez452 (1:72)
21 January 2021, 15:49
Juergen Klinglhuberand...OMG! potez452's documation is great.
and...YES. I thought about filling them. But I was not sure what material will make it stiff but not too heavy. As my Tamiya putty was eating away the styrene in the areas where i used it to support the bulkheads that I put into my craft ...I gave up this idea. I will check what potez452 use, may quite useful for the wings...THANKS
21 January 2021, 20:30
Juergen KlinglhuberWas able to work a bit on the landing gears. Don't ask me details,...... 🙁
26 January 2021, 19:45
Łukasz GlińskiLooks brilliant, remember this is Broplan, even worse than A-Model😉
26 January 2021, 20:53
David TaylorHad a similar problem with pz2 LuchsI made a jig to put on the chassis to level everything up when I glued suspension arms on.
29 January 2021, 14:55
Juergen Klinglhuber@Lukasz:
wingspan 35,5[cm]
lenght 29[cm]
beside my PBY Catalina build (modellversium.de/gal..atalina-academy.html) this one is the biggest plane in my collection by now (I am mainly in 72 scale).
But an C130 Hercules & a Dornier JII Wal is in my stash too.
23 February 2021, 20:19
Juergen Klinglhuberthx Lukasz & David. I am ready for a layer of primer now. I'm curios how this "treated" surface with all the putty, sanding, etc,....turns out then. Pic's will follow asap.
24 April 2021, 20:15
Łukasz GlińskiCongrats on the tail recovery. It keeps looking better with each update. 👍
2 May 2021, 07:43
Juergen KlinglhuberHi guys - Some minor progress to be reported....all decals on and sealed now. A lifgt oil wash applied too. Looking forward to find the time to dim the surface down and to add the last pits & pieces.
22 May 2021, 19:49
Juergen KlinglhuberAs summer time is slowing down my build process it took some time to post a new status. Now I added some pictures of detailing work which I have done the last few weeks. I see the finish line come close.
24 June 2021, 08:18
AlexanderIncredible work done so far - truly remarkable dedication and effort that you put into this near tabula rasa of a kit! Very much looking forward to the finish! 👍👍👍
26 June 2021, 15:59
Juergen KlinglhuberFinally - Done with my first vaccuform experiment. The Casa CN-235 was finished in July, but was not able to take some pictures. Now - here they are....
cheers
29 August 2021, 20:09
Łukasz GlińskiOh man, this is exquisite 👍 love the cockpit decal - the hand reminds me the "Titanic" movie 😉
29 August 2021, 20:11
Bernhard SchrockDir gebührt eine Medaille alleine für die Tatsache, dass du in der heutigen von 3D-Hitec & Co dominierten Modellbau Welt einen Vacu baust!!
30 August 2021, 05:28
Harry EderAbsolutely great result Jürgen! 👍 Looking forward to see it live in Ried! 😉
30 August 2021, 07:00
CuajeteFantastic result and better job.
I hope that some brand release the CN-235 in plastic.
Congrats!
30 August 2021, 19:37
Juergen KlinglhuberHi @all - many thanks for your kind words. It was fun to make experience with vaccu technique. Not sure if this was my first & last attempt....
@Dietmar & Harry - The bird will be there and I am looking forward for the exhibition too. After the Covid break it will be good to meet some mates and checking how productive they have been in the last 2 years. Hope the current figures will not spoil it at the end. Fingers crossed.
30 August 2021, 20:25
Juergen KlinglhuberThx Alexander - Vaccu was a challenge, but interessing and from a distance fun too.
26 October 2021, 15:58
Michael KohlHard to believe that this once was a vacu-kit. Just to brave such a task deserves respect. I bow my hat for the incredible result.
28 October 2021, 15:20
Roy McKayThis looks stunning. And you make it look so easy. I've got this kit to do an Irish Air Corps one, was going to start it this weekend. Not so sure now!
18 February 2022, 22:43
Juergen KlinglhuberThank you Roy for your nice comments. And I hope you have started the kit. It's alot of work and effort, but it is worth it - you will have a very rare model on the shelf then,....let us know how it turn out! cheers
21 February 2022, 13:19
OlivierWhat a nice tutorial ! And what a result !!!
I own a few vaccu kits which I never dared tackle. Maybe now I shall...
21 February 2022, 16:11
Album info
VACU_FORM !
