Collab 2020: Modeling Heavy Equipment (Backhoe)

Collaborations
Kent Trammell

Accomplishing a BIG project TOGETHER

Starting in March 2020, I began a large stream project to model a comprehensive, highly-detailed Caterpillar 434E backhoe. Please watch the first stream (first 3 minutes of abridged version at least) for an overview.

It's a straight-forward project of building a complex model over an extended period of time. The spin on the project is that I want your help to accomplish it! If I build some parts and you build some parts, we will finish this thing much quicker. Plus the contribution format will include reviews, the potential of having your piece(s) assimilated into the final model. Not to mention large quantities of XP are at stake 🤑

NOTE: This is an involved project reserved for Citizen members.

Collaboration Details

The general idea is that I kickoff stages of the project via live stream, which is typically once per month. For the time in between streams, you choose a piece of the backhoe and apply what you learned from the stream to that piece. For example, the first stream covered initial block out. So between stream 1 and stream 2, your job is to pick a piece and block it out.

This is the repeating protocol for each Assignment Period (between-streams):

  1. Signing up for pieces of the model. I will be maintaining a Google Sheet to organize piece selection and grading. Following this URL will give you the ability to comment. The sheet is sectioned vertically and color-coordinated with a backhoe image. To sign up for a piece, right click on an empty cell below your desired piece section and click "Comment" (CTRL + ALT + M). Comment your name or username and I will fill it in officially as confirmation.

    Remember that it is OK for multiple people to model the same piece. But lets try to have at least one person assigned to each piece before doubling up.

    2. Project file structure. We're going to use Google Drive as a means to sync a single working directory among all contributors. See this thread about details and how to get set up.

    3. Submitting your piece for review. Exactly one week before the next stream is scheduled to be broadcast, your piece is due. In the "Attempt" cell of the spreadsheet, paste a download link to your .blend file via Dropbox, Google Drive, or equivalent hosting service. This will earn you at least 10 XP each week.

    4. Review. On stream I will review each submitted piece and decide which will be assimilated into the master model (in the case of multiple submissions of the same piece). The purpose of the review is to generate feedback for you work and advice for improvement.

    5. Assimilation. If your piece makes the cut and is assimilated into the master model, your name / username will be added to the object in Blender. You will go down in history as a definitive contributor to this epic backhoe model!

    Once the model is completely done, I plan to render a short demo reel showing off the model and crediting all contributors. It should be a rewarding conclusion to all the work we will do!

Assignment Prompts

I will reply to this thread after each stream with a [big] assignment post denoted by a  📣 emoji in the title. There I will clarify instructions about each Assignment Period.

Online Resources

Reference Images

Livestreams


This is THE thread

We will centralize our collaborative communication between the streams and this thread. Ask any and all questions pertaining to the Backhoe project here.

  • Kent Trammell replied

    This made my Monday. It's been a special project for me. The way everyone has taken it and run with it. The quality of modeling work, the sharing of tips and side-bar tutorials...While this community has always been cut above the rest imo, nothing quite like this project has happened before . The DOG Pound Revolution! ✊ 

  • adrian replied

    We couldn't do it with out you boss, @theluthier 

    blanchsb and ppfbourassa  when your ready let me know, I think I only need to tweek my little bit of the hydraulics.

  • Parker Bourassa(pfbourassa) replied

    @adrian2301 What do you need me to let you know about?
    Sorry, I've been slacking on these notifications a little.

  • adrian replied

    When your done with the hydraulic file ppfbourassa

    If you have it 

  • Parker Bourassa(pfbourassa) replied

    blanchsb I have the empties in place, but still have some modeling to do. I'll try to upload in the next few days.

  • Karen Trevino(ketre) replied

    💕💕💕 this was an amazing adventure for sure. can hardly wait to be back at it

  • adrian replied

    Just call me 'Side Show Bob'

    Been working on a little side project last few days, if I finish in time, maybe it could be part of the animation.

    Going to need to watch that wheel tutorial again spikeyxxx 

  • Shawn Blanch(blanchsb) replied

    Yeah I would recommend bookmarking that one as part of the Profile Bookmarks. Definitely worth revisiting any time I make tires in the future.

  • Ingmar Franz(duerer) replied

    Is there an overhang at the sides of the engine hood (red ellipse in the image below) ?

    The hood also seems to have some tapering growing from the vehicle's front up to the windshield.

  • adrian replied

    The red ellipse is a black stripe.

    The taper from front of the hood to the windscreen is a bit of an illusion in this image . I think because the camera angle is more from a corner angle and the black hand rail on the left looks as if you can see the black stripe on both sides. I actually thought that first then looking at other images if there is is very slight.

  • adrian replied

    This image shows there is a taper right at the very front.. Not as extreme as the other image.  I'll see if I can fix that.

  • adrian replied

    I have a taper, but not curved as it should be.


  • adrian replied

    A little proportional editing later......


  • Rita G replied

    Does anyone know where I can find blueprints for a backhoe 434e seat? I have looked for blueprints, but I seem to be looking in wrong places. I'm stuck. Problem is, I don't know what the back of seat looks like. 

    This is as far as I got on a chair. If anyone is asking, I laid off mirror modifier because I hated finding double points in mesh. I will add mirror modifier later. 


  • Rita G replied

    No worries, Jack. I was months away from my computer during lockdown. My PC was in another location. I'm glad to be back on it. I thought I was most behind others. Perhaps so. 

  • Shawn Blanch(blanchsb) replied

    @ritag  This is a picture I took of a 430F model.



    Actually I zoomed into this picture I took and it is a solid plastic back. Your chair is probababably similar.

  • Karen Trevino(ketre) replied

    @adrian2301 Its a thing of beauty! Seems wierd calling a huge monstrosity beautiful, but it is when you see someone mastering difficult parts like this 🤩

  • Karen Trevino(ketre) replied

    @ritag it's so good to see you making great stuffs in this collaboration. 😍

  • Shawn Blanch(blanchsb) replied

    @adrian2301 I found another intersection/collision area. Can you be a big pal and fix it on your side? I am running out of ways to move my loaders arms left and right, lol.

    It's the lifting eye on the undercarriage. It can go forward OR aft OR shrink closer to the chassis, but it can't be there or it will get bent haha.


    My loader arms are moved in 1.8" towards the center from the previous livestream copy in order to make room for the battery box tank-fill and hydraulic connections. I can post my model this evening for better reference. Just doing a little cleanup of object naming.

  • adrian replied

    No problem I’ll see to that.