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  #2791  
Old 03-17-2023, 01:32 PM
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Okay, if I ever have time for that after I have finished the Payload Canister ...

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  #2792  
Old 03-17-2023, 01:34 PM
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Hello everybody,

originally I had immediately thought of my narrowest Evergreen profiles, but both the H profiles and the U profiles are 1,5 mm wide, which would not match to the filigree handrails.

Then I've compared a Channel profile (1,3 mm) with my planned four-part variant (right), which, when using strips (0,2 mm x 0,75 mm) for the sides, is approx. 0,9 mm wide, which looks more pleasing in combination with the round rod ( 0,45 mm) of the handrail struts.



And if I would cut a Styrene strip (0,13mm x 0,75mm) for the sides, it should look even better and even closer to the size specified in the NASA drawing get there, what would mean a bit more effort.

So I've tried to scratch such a Prototype. But it's already not easy to cut a 0,75 mm wide strip, but which I managed to do.

I then placed this strip upright on the ruler angle, clamped the Base strip (0,25 mm x 0,5 mm) in front of it and then both strips were carefully glued by using MEK at their connecting line. Then I glued a small strip onto the other side,



and let it dry.



Then I've carefully cut off a 1 mm long part from this U profile with a razor blade,



which actually succeeded with the precautionary placed Jump away-Protection tape (left).



Now only the small end piece had to be glued and trimmed,



whereupon the test fitting of the first Mount on the handrail could take place.



Although the feasibility of the Prototype could be shown in principle, I have in mind a smarter solution for scratching of the remaining 17 mounts, by what the effort should let be reduce.

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Under construction:
Launch Pad 39A with Challenger STS-6 (1:144)
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  #2793  
Old 03-18-2023, 03:45 AM
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Hello everybody, is there anybody in there?
And thus to this new variant for the production of the Handrail brackets that I have been thinking about.

The idea behind it is actually simple and based on the production of such a U profile with a greater length, from which I then carefully cut off small 1 mm long pieces and close on one side.

Thought and done, gluing the side strips (0,13 mm x 0,75 mm) to the base strip (0,25 mm x 0,5 mm) took place again in the proven manner by fixing between the rulers.



Such a Steel ruler is also ideal for aligning the U profile, which happens to be 0,5 mm thick as on commission.



Then the U profile was glued to the end strip (0,13 mm x 0,8 mm), which I deliberately left a little longer and fixed flat.



However, since my steel angle for the vertical alignment of the U profile offers much more support, I then chose this arrangement, which made the gluing much easier.



For final fixation while the Revell glue was drying, the deck ruler was moved to the stop,



whereby the U profile was glued perfectly.



For the separation of the end strip I've thought about this special fixation on a small steel block,



after which the razor blade was used.



To complete the bracket, only the end piece (1 mm) had to be separated from the U profile,



for what I needed five rulers for fixation, which I arranged in such a way that I could now use the razor blade to score at least the upper edge of the two side strips on the 1 mm line, which only has a minimal overhang (0,25 mm),



wherefore I had to take a close look myself with the headset magnifying glass over my glasses, assuming a steady hand.

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  #2794  
Old 03-18-2023, 03:46 AM
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For the final separation of the mount I only had to be able to recognize these fine incisions,



which is perhaps just visible here on this macro shot at an enlargement of 3553x2665,



therefore here again somewhat larger with marking.



When making a cut with a razor blade, the Jump away Protection tape is important in addition to a steady hand, which again has proven itself!



The advantage of this variant is that I can now use the remaining U profile to make another nine mounts in the same way,



wherewith the half would be done already.

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  #2795  
Old 03-18-2023, 06:50 AM
Revell-Fan Revell-Fan is offline
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Richard Chamberlain – Wikipedia

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  #2796  
Old 03-18-2023, 08:21 AM
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Yeah, yeah, yeah!
Just saw Pink Floyd's awesome song Comfortably Numb and was inspired again, hence the question, if there is anybody in there ...

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