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Paul_L's Connoisseur 4F build

Discussion in 'Kits, Kit bashes & Scratch builds' started by paul_l, May 27, 2020.

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  1. Jun 28, 2020 #101
    York Paul

    York Paul Staff Member Moderator

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    The curve you are chasing for Paul is a quarter radius and can be gauged by measuring the distance from the top face of the smokebox former to the outer face of the boiler, the half etch smokebox wrap thickness should be visible from the back edge of the actual smokebox former as thelineof rvets denotes the coupling between the smokebox wrapperand the actual tube plate frame which forms the rear curve. Hope this helps.
     
  2. Jun 28, 2020 #102
    paul_l

    paul_l Staff Member Administrator

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    Cheers Paul

    Trying just the 1/4 round profile

    upload_2020-6-28_16-5-31.png

    Printing direct to the plate this time, I will find out in 25 min if I can get them off the build plate

    upload_2020-6-28_16-7-12.png

    External radius 18.8, internal radius 18.0, bevel is a 1mm radius.

    Paul
     
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  3. Jun 28, 2020 #103
    paul_l

    paul_l Staff Member Administrator

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    Of course Murphy's law will apply, as this boesn't have the boiler band built in all three printed without issue and all 3 came off the build plate. :whatever: :thumbup:


    Not sure wether to solder on the boler band then apply the profile over the top, or to print the profile with a boiler band built in

    Paul
     
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  4. Jun 28, 2020 #104
    paul_l

    paul_l Staff Member Administrator

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    OK

    version 3

    upload_2020-6-28_16-59-15.png

    Need to set the printer back up - but should take 35 mins to print

    Paul
     
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  5. Jun 28, 2020 #105
    Rob Pulham

    Rob Pulham Happily making models Staff Member Administrator Feature Contributor

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    You can always add the boiler band from tape - most of the pro painters use either tape or transfers for the boiler bands. These things were very thin in reality which doesn't really scale well.
     
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  6. Jun 28, 2020 #106
    Andy_Sollis

    Andy_Sollis Staff Member Moderator

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    I’m sat waiting with interest! The 3D print bit now has me interested a little more.. waiting to see you pull this off with spectacular results! :tophat::tophat:
     
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  7. Jun 28, 2020 #107
    Toto

    Toto I'm best ignored Staff Member Founder Administrator

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    Copper tape maybe
     
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  8. Jun 28, 2020 #108
    Rob Pulham

    Rob Pulham Happily making models Staff Member Administrator Feature Contributor

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    Copper tape is good for where you need to solder pipework to the boiler band - I read somewhere that apparently you need to do this if you build a Britannia.
     
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  9. Jun 28, 2020 #109
    Toto

    Toto I'm best ignored Staff Member Founder Administrator

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    I bought some a few years back as use as a BUS for electrical pick up on Rosebuddy. It nice and thin. Dont know how easy it would be to cut thin and straight enough for this purpose but it wouldn't he impossible.

    Toto
     
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  10. Jun 28, 2020 #110
    Rob Pulham

    Rob Pulham Happily making models Staff Member Administrator Feature Contributor

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    I assume that for normal boiler band use it would be great. But if you solder to it you would need to be in and out quickly to prevent the glue from softening and peeling off with the heat.
     
  11. Jun 28, 2020 #111
    Toto

    Toto I'm best ignored Staff Member Founder Administrator

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    Very Rob. It does not need a huge iron as the copper is so thin and takes solder very quickly.

    toto
     
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  12. Jun 28, 2020 #112
    paul_l

    paul_l Staff Member Administrator

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    Just for Andy, here's the photo of version 3


    It's not secured yet.

    Paul
     
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  13. Jun 28, 2020 #113
    Toto

    Toto I'm best ignored Staff Member Founder Administrator

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    Looks very neat Paul. Good result.

    Toto
     
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  14. Jun 28, 2020 #114
    York Paul

    York Paul Staff Member Moderator

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    Cracking result Paul and I too worked on a radius of 1mm... i like the idea of incorporating the boiler band on the ring as well :tophat::thumbup:
     
  15. Jun 28, 2020 #115
    paul_l

    paul_l Staff Member Administrator

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    Thanks guys, I may try and print it again in Green resin, as that tends to be a bit harder, on the other hand I may just sit in the window to cure for a couple of days then secure it with cyano (maybe after soldering in the middle boiler band).

    Paul
     
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  16. Jun 29, 2020 #116
    York Paul

    York Paul Staff Member Moderator

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    sounds like a plan Dundee... or you could go with Blue resin which makes for less painting when you apply the double arrow on the tender.:avatar:
     
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  17. Jun 29, 2020 #117
    Rob Pulham

    Rob Pulham Happily making models Staff Member Administrator Feature Contributor

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    That looks perfect for black painted locos. A cracking result.
     
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  18. Jun 29, 2020 #118
    Mark4mm

    Mark4mm Guest

    Nice neat work Paul.
     
  19. Jun 29, 2020 #119
    Andy_Sollis

    Andy_Sollis Staff Member Moderator

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    Wow! Fantastic work :thumbs:
     
  20. Jun 29, 2020 #120
    paul_l

    paul_l Staff Member Administrator

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    Glad you like it, but I'm not sure if my resin may be on it's way off, or may just be the size. Tomorrow, I think I will try green resin just to see the difference, and also restore the gap in the ring which will make fitting easier, especially if the ring is more brittle.

    Paul
     
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