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Thread: Small Boiler

  1. #1
    Supporting Member editor@glue-it.com's Avatar
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    Small Boiler

    Hi, have been learning how to form the endplates for a boiler, used a hammer to round the edges:
    Small Boiler-boiler-endplate-02.jpg

    But then decided to make a forming tool
    Small Boiler-boiler-endplate-14.jpg

    Made two endplates for the traction engine boiler
    Small Boiler-boiler-tubes-06.jpg

    then drilled holes and made up 7 off 3/16" pipes using brake tubing
    Small Boiler-boiler-tubes-08.jpg

    More info around the heat treatment is here
    glue-it.com

    The next stage is to make up the other fittings and silver solder it all together, Best regards, Nigel

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    bruce.desertrat (Dec 9, 2019), Inner (Dec 10, 2019), Jon (Dec 9, 2019), Miloslav (Dec 9, 2019), Scotsman Hosie (Feb 20, 2020), sossol (Dec 9, 2019)

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    Supporting Member Savage11's Avatar
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    Keep us updated OP!

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    Supporting Member editor@glue-it.com's Avatar
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    I've turned up the smokebox, these are the basic forms that are coming together
    Small Boiler-20191214_153359.jpg
    The beam is just cut to size at the moment and needs to be drilled and threaded in the future.
    Small Boiler-20191215_150854.jpg
    The bottom end of the chimney has taken some time to machine, the curve was machined as a taper and then by hand I made the curve. The bottom surface that is curved to fit the smokebox was machined using a flycutter.
    Small Boiler-20191215_150920.jpg
    A nice feeling when it starts to look right.

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    Scotsman Hosie (Feb 20, 2020), sossol (Mar 6, 2020)

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    Supporting Member Savage11's Avatar
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    Its coming along nicely, very cool indeed.

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    It's a mix of making parts, drawing the plans as I go and then sometimes remaking parts. I'm using images of a 6NHP Burrell for inspiration and gradually adding detailed design around each element. Any help with respect to the design and tooling around the manufacture would be most welcome.

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    Supporting Member editor@glue-it.com's Avatar
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    I re-turned the lower chimney section
    Small Boiler-smokebox-022.jpg

    Some hand turning, take extreme caution if you're going to try this...
    Small Boiler-smokebox-005.jpg

    This was my first attempt at riveting and I made the rivet punch
    Small Boiler-smokebox-010.jpg

    As you can see I'm creating drawings as I go and will share more details on the full build: Miniature Burrell Smokebox

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    Scotsman Hosie (Feb 20, 2020), sossol (Mar 6, 2020)

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    Supporting Member thehomeengineer's Avatar
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    Hi
    Nice to see your build. This is a really good project.
    I have a web site which has some details of my traction engine build. It might be of help for your build. There is a couple of sections on the copper boiler making. Practical Engineering
    I hope you find this is helpful towards your excellent engine build.
    The Home Engineer

  11. #8
    Supporting Member editor@glue-it.com's Avatar
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    This originally started as a discussion around the boiler and I'll come back to that soon, In the meantime I'm gradually picking off the parts to make:
    Small Boiler-rear-wheel-001.jpg
    The rear wheel rims were machined from 4 inch diameter mild steel stock, I roughed out the size and then switched to a 4-jaw chuck and DTI
    Small Boiler-rear-wheel-002.jpg
    These then got machined with the inner beads and finished 97mm overall diameter
    Small Boiler-rear-wheel-004.jpg
    the treads were machined on the milling machine, this took some time to setup the 10° angle, align the wheel with a DTI in the chuck again and centre the milling bit
    Small Boiler-rear-wheel-012.jpg
    I'm pleased with the result, more details of the setup and discussion, drop me a line if you want to know more, best regards, Nige

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    I machined one tread and then didn't take enough time setting up the opposite angle, the old saying "measure twice, cut once" is still ringing in my head and so I had to make another complete wheel, at last I have a pair:
    Small Boiler-rear-wheel-rims-001.jpg
    More details are here: https://www.glue-it.com/wp/gallery/r...el-tread-pair/

    I also took a picture of my parts made and bought to date:
    Small Boiler-kit-parts-002.jpg

    I'm gradually creating the drawings as I go and collecting these into a set of plans - need to think about how I'm going to make these available to others....thoughts?

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    My Record BS250 bandsaw is great, but not very good when it comes to cutting thin materials such as the brass I'm using for the wheel spokes. I thought up this simple modification to the table:
    Small Boiler-bandsaw-mod07.jpg
    The MDF table is fixed to the main table from underneath, removing the gap under the fence, adding support around the blade and removing the step around the blade: Cutting Brass on a Bandsaw

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    Andyt (Feb 29, 2020), jackhoying (Feb 28, 2020), Jon (Mar 1, 2020), Toolmaker51 (Apr 6, 2021), tooly (Feb 28, 2020)

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