mini digger - UPDATED 11.11.2012

by tc_fea, published

mini digger - UPDATED 11.11.2012 by tc_fea Oct 14, 2012
5 Share
Download All Files

Thing Apps Enabled

Order This Printed View All Apps



Liked By

View All

Give a Shout Out

If you print this Thing and display it in public proudly give attribution by printing and displaying this tag.

Print Thing Tag

Thing Statistics

11331Views 3338Downloads Found in Mechanical Toys


This is a mini digger for your desktop and is a fun time waster.

This item is designed to be printable on a 100mm X 100mm build platform.

a sketchup file is provided mini_digger_1.5_121111a.skp

file: mk_schematic_121006b.mac creates an ANSYS model of the linkage and cycles it through the full range of motion.


UPDATE 11.11.2012

TI modified the base to have rounded corners like Arvin's photo. Please use base file: md_121111a_base.stl. This file also has 3mm holes for attaching the mini-digger to a platform.

file: mini_digger_1.5_base_2_121111a.png shows the new base_2

Base file md_121012e_base.zip is retained for those who prefer that style.

See file assembly_picture.png for the assembled mini-digger. (use base_2 not base)

See file part_list_picture.png for the names of the parts.

You will also need:

11 - 3mm x 20mm long bolts
11 - 3mm lock nuts with a nylon insert (or 22 3mm regular nuts)
Acetone to glue bar 10 to the bucket

All .stl files are zipped. .stl files are provided to either print all the parts individually or with some of the parts grouped into multiple part prints.

Unzip and print one each of the following:

To print the remaining 9 parts individually, unzip and print one each of the following:

print one more md_121012e_link_11.stl, since you will need two.

To print the remaining 9 parts in groups, unzip and print one each of the following:


pictures group_1.png and group_2.png show the parts in each group.


I suggest that you drill out all holes with either a 3mm or 1/8 inch drill.

Please see assembly_picture.png for how to assemble the parts. See part_list_picture.png for the part names. substitute base_2 for base

Glue Bar 10 to the bucket using acetone or your favorite glue. Be careful to align the long straight edge of bar 10 so it is flush with bucket lugs as shown in the assembly picture.

Simply bolt everything together as shown in the assembly picture. The bolts should be able to spin so that the entire linkage moves freely.

More from Mechanical Toys

view more

All Apps

3D Print your file with 3D Hubs, the world’s largest online marketplace for 3D printing services.

App Info Launch App

Auto-magically prepare your 3D models for 3D printing. A cloud based 3D models Preparing and Healing solution for 3D Printing, MakePrintable provides features for model repairing, wall thickness...

App Info Launch App

Kiri:Moto is an integrated cloud-based slicer and tool-path generator for 3D Printing, CAM / CNC and Laser cutting. *** 3D printing mode provides model slicing and GCode output using built-in...

App Info Launch App
KiriMoto Thing App

With 3D Slash, you can edit 3d models like a stonecutter. A unique interface: as fun as a building game! The perfect tool for non-designers and children to create in 3D.

App Info Launch App

Print through a distributed network of 3D printing enthusiasts from across the US, at a fraction of the cost of the competitors. We want to change the world for the better through technology, an...

App Info Launch App

Quickly Scale, Mirror or Cut your 3D Models

App Info Launch App

3D Print a wide range of designs with Treatstock. Easy to use tools to get the perfect result. The global 3D printing network that connects you with high-quality and fast working print services nea...

App Info Launch App

hey there,
I've used your mechanism to make a digger arm for my robot toy tank project.
Thanks for sharing

Digger Arm for the Robot tank toy project.

Made one! Works great. Just wish it was bigger. The 2yr old grandson will probably break it as soon as it gets ahold of it! Oh well. I do have a printer. :) 

I also like the bolt holes you added to the base.

glad you like. you could scale it up in replicatorG if you like. The size limiting part is the "big arm"

would be a great addition to a zen garden :D