Dabbling in Fusion 360

Discussion in '3D Modeling Projects' started by Rob Pulham, Jun 25, 2021.

  1. Rob Pulham

    Rob Pulham Happily making models Staff Member Administrator Feature Contributor

    Messages:
    3,119
    Likes Received:
    3,098
    Joined:
    Sep 15, 2017
    Thanks Paul,

    I think I understand what you said to do but not why?- Long day playing with a garden railway.
     
  2. Rob Pulham

    Rob Pulham Happily making models Staff Member Administrator Feature Contributor

    Messages:
    3,119
    Likes Received:
    3,098
    Joined:
    Sep 15, 2017
    This is the final version. it was a bit of a challenge to get all the lever elements constrained so that I could extrude it, but I got there in the end.

    [​IMG]

    [​IMG]

    [​IMG]

    [​IMG]

    [​IMG]

    By turning different elements off as in the photo I can create separate STL files for just the lever, the complete valves without the cover or complete with the cover.
     
    Kimbo, Andy_Sollis and paul_l like this.
  3. paul_l

    paul_l Staff Member Administrator

    Messages:
    8,857
    Likes Received:
    4,806
    Joined:
    Dec 5, 2015
    That would print as a one piece item, and if doing it that way, I'd extend the two shorter legs on the lever so that they attached to the base for strength.

    Paul
     
    Last edited: Jul 2, 2021
    Rob Pulham likes this.
  4. Rob Pulham

    Rob Pulham Happily making models Staff Member Administrator Feature Contributor

    Messages:
    3,119
    Likes Received:
    3,098
    Joined:
    Sep 15, 2017
    Thanks Paul,

    My main reason for drawing them as separate items was twofold

    I thought the lever might be vulnerable in resin and I primarily drew it for the friend who designed the D2 etches and he asked for it as a separate item for printing in 4mm.
     
    paul_l likes this.
  5. paul_l

    paul_l Staff Member Administrator

    Messages:
    8,857
    Likes Received:
    4,806
    Joined:
    Dec 5, 2015
    And if it's actually a brass finish rather than painted will look more realistic

    Paul
     
    Rob Pulham likes this.
  6. Rob Pulham

    Rob Pulham Happily making models Staff Member Administrator Feature Contributor

    Messages:
    3,119
    Likes Received:
    3,098
    Joined:
    Sep 15, 2017
    I agree, and on that note would you like me to turn some brass whistles for your Highland tanks?
     
    Andy_Sollis likes this.
  7. Andy_Sollis

    Andy_Sollis Staff Member Moderator

    Messages:
    2,963
    Likes Received:
    2,874
    Joined:
    Aug 4, 2018
    I disagree. That’s better than anything I’ve managed to draw in Fusion, hence why I’m still using its predecessor - great for colouring and rendering, but I just can’t get on top of this program, especially as I’m still learning new Tricks on the old one!

    Great work, I’ll now read the rest of the thread! :thumbs:
     
  8. Andy_Sollis

    Andy_Sollis Staff Member Moderator

    Messages:
    2,963
    Likes Received:
    2,874
    Joined:
    Aug 4, 2018
    So far, my one and only replacement of a FEP was just as described, a whole.. not even sure how it occurred.. however, I took advice from the start that you actually fit a second over the screen or get a iPad protection screen between the LCD and the VAT/FEP to protect the screen from spillages.

    Andy
     
  9. Rob Pulham

    Rob Pulham Happily making models Staff Member Administrator Feature Contributor

    Messages:
    3,119
    Likes Received:
    3,098
    Joined:
    Sep 15, 2017
    Good morning Andy,

    Some time ago I tried to learn Blender but failed miserably and I think it's because I didn't have goal to give me any impetus to learn it. By taking part in the GOG special interest group it has given me the push needed to get me to get past the basics.
     
    Andy_Sollis likes this.
  10. Andy_Sollis

    Andy_Sollis Staff Member Moderator

    Messages:
    2,963
    Likes Received:
    2,874
    Joined:
    Aug 4, 2018
    Probably what i need to do. It will no doubt take me a few 100 hours like the first did..:avatar:

    but if I don’t try I won’t find out. !!
     
    Rob Pulham likes this.
  11. Rob Pulham

    Rob Pulham Happily making models Staff Member Administrator Feature Contributor

    Messages:
    3,119
    Likes Received:
    3,098
    Joined:
    Sep 15, 2017
    You might be surprised, a lot of the terms and functions will be familiar as will how you build up drawing you will just be using a different tool to do it.

    I was starting from scratch but found that my small experiences with QCAD did help.
     
    Last edited: Jul 26, 2021
    Andy_Sollis likes this.
  12. Andy_Sollis

    Andy_Sollis Staff Member Moderator

    Messages:
    2,963
    Likes Received:
    2,874
    Joined:
    Aug 4, 2018
    I self taught myself. Developed from there. No previous cad since the days of a BBC model B at school. Always worked with solid blocks but only just started with line drawings after 7 years.
     
  13. Andy_Sollis

    Andy_Sollis Staff Member Moderator

    Messages:
    2,963
    Likes Received:
    2,874
    Joined:
    Aug 4, 2018
    And the first 4 are off..

    But a small error was found so we are reprinting. 478BBDB2-331B-46D9-A181-97834445023B.jpeg BD12FEB4-B972-4ECC-8D78-EA565409F859.jpeg
    It’s missed the treaded bar in the middle.! V3 will solve this issue and is due out the printer mid afternoon.
     
    Rob Pulham likes this.
  14. Rob Pulham

    Rob Pulham Happily making models Staff Member Administrator Feature Contributor

    Messages:
    3,119
    Likes Received:
    3,098
    Joined:
    Sep 15, 2017
    Before I get stuck into some more physical model making I thought that I would try my hand at an axle box. One of my LNER Wagon Books (Tatlow vol 3) has a GA for an NER open wagon which showed the type of axle box that was looking for.



    I scanned the drawing and imported it into fusion on two planes. Since picking up how to calibrate drawings from the last SIG session this job has become much easier than my rather long winded manual resizing of the drawing that I was doing previously

    3D NER no2 Axle Box 2.png

    3D NER no2 Axle Box 3.png

    3D NER no2 Axle Box.PNG



    I also discovered the render tool which makes the pictures look so much better.
     
    Andy_Sollis, Tom Burnham and paul_l like this.
  15. Rob Pulham

    Rob Pulham Happily making models Staff Member Administrator Feature Contributor

    Messages:
    3,119
    Likes Received:
    3,098
    Joined:
    Sep 15, 2017
    I was asked by a fellow Guild member how I changed the appearance and rendered an image so I made a short video to show what I did.

     
  16. Andy_Sollis

    Andy_Sollis Staff Member Moderator

    Messages:
    2,963
    Likes Received:
    2,874
    Joined:
    Aug 4, 2018
    What do you use for screen recording out of interest?
     
  17. Rob Pulham

    Rob Pulham Happily making models Staff Member Administrator Feature Contributor

    Messages:
    3,119
    Likes Received:
    3,098
    Joined:
    Sep 15, 2017
    Hi Andy,

    I use OBS studio, it's free and the only drawback is that you need to edit the beginning and end to remove the OBS screen as you start and stop the recording.
     
    Andy_Sollis likes this.
  18. Rob Pulham

    Rob Pulham Happily making models Staff Member Administrator Feature Contributor

    Messages:
    3,119
    Likes Received:
    3,098
    Joined:
    Sep 15, 2017
    I started this drawing sometime ago in preparation for building inside motion for my B16/1. A friend who is also doing the same has done a lot of research which he has kindly shared with me so I thought it rude not to at least attempt it.

    First up is the rocking lever that operates the valves on the inside motion. I had stalled on this while trying to work out how to draw the end with the clevis that is shaped in two planes. I have posted an explanation of how I did it on Mossy's 3D printer virgin thread.
    B16-1 Rocking shaft.png

    B16-1 Rocking shaft 3.png

    B16-1 Rocking shaft 2.png

    B16-1 Rocking shaft 1.png

    Next up is the lever that fits over it in the middle.

    B16-1 Lever for rocking shaft 1.png B16-1 Lever for rocking shaft 2.png
    B16-1 Lever for rocking shaft.png B16-1 Lever for rocking shaft 3.png

    There are two mounting brackets that fit either side of this on the shaft but I haven't any details of what they look like yet.

    It's very easy with CAD to forget just how small these things are when scaled to 7mm (or 4mm) the oil feed tube is overscale at the 0.3mm drawn (it should have only been 0.2) so I will need to remove it before sending it of for casting in brass. Adding it was really a vanity exercise in 3D sketching (drawing between two planes).
     
    Last edited: Aug 9, 2021
    paul_l, Tom Burnham and Andy_Sollis like this.
  19. Rob Pulham

    Rob Pulham Happily making models Staff Member Administrator Feature Contributor

    Messages:
    3,119
    Likes Received:
    3,098
    Joined:
    Sep 15, 2017
    My friend kindly shared a drawing of the mounting bracket so I have had a dabble at drawing that up too.

    In theory this bolts around the narrow sections in the rocking shaft above so I had to make the clamping parts as separate items.

    LNER B16-1 Rocking Shaft Mounting Bracket.png LNER B16-1 Rocking Shaft Mounting Bracket 2.png LNER B16-1 Rocking Shaft Mounting Bracket 3.png
    LNER B16-1 Rocking Shaft Mounting Bracket 1.png LNER B16-1 Rocking Shaft Mounting Bracket 4.png LNER B16-1 Rocking Shaft Mounting Bracket 5.png LNER B16-1 Rocking Shaft Mounting Bracket 6.png

    I have finally with some guidance from a fellow Guild member got my head around drawing chamfers on the nuts
     
    Andy_Sollis likes this.
  20. Mossy

    Mossy A classic grump Yorkshire man Full Member

    Messages:
    653
    Likes Received:
    911
    Joined:
    Sep 8, 2020
    Rob,

    All I can say is WOW, quite how you can pack so much detail into what is essentially a tiny piece that will barely be seen is astonishing.
    They make my humble wagons look like something a bumbling beginner would come up with. Actually that describes me very well.
     
    Andy_Sollis likes this.

Share This Page