1. Engineering Graphics & 3-D Modeling
Lecture 11
Makerbot 3-D Printing
5/12/2018
Engineering Graphics & 3-D Modeling

2. Engineering Graphics & 3-D Modeling
Project Components
Skid Loader Toy:
Teams of about 5 students
Parts Needed:
All 7 part details & 3 assemblies of the design packet (team)
Axle (necessary views)
Hub
Tire
Seat
Side (necessary views/notes)
Arm
Bucket
Bill of Material with Cost Roll-Up (Excel Spreadsheet 8-1/2 x 11 format)
Cover Sheet (Installation Drawing)
All drawings on Team-Formatted Title Blocks
Produce entire model on 3-D Printer (.STL files → .Thing files)
Need a pretty solid base
Printing overhangs is a problem → use (breakaway) supports
One alternate end effector from each team member (bonus pts!)
Team Design Packet: (turn in electronically by 1:00 PM on Wed. 14 DEC)
Axle-Hub-Tire Sub-Assembly
Skid Loader Assembly
Seat-Side Sub-Assembly
5/12/2018
Engineering Graphics & 3-D Modeling

3. Submission Instructions
To submit your team’s term project, do the following steps:
Open the F: drive from your computer
Go to the folder labeled tmpfiles
Go to the folder labeled IENG 248 Term Projects
Create/find the folder with your team name, and open it
Copy all of the following files into the folder:
Each individual part file
Each individual drawing file
Any assembly file(s)
All the .Thing files for 3-D printing
Any other files that your team wishes to submit for grading
Send an to the instructor with the following subject:
IENG Final Project – and add your team name at the end
In the body of the text:
List each team member and the part files / drawings / etc. that they created for the project – one student per line.
Hit the send button
Go enjoy your break!
5/12/2018
Engineering Graphics & 3-D Modeling

4. Engineering Graphics & 3-D Modeling
Project Components
Printing the Skid Loader Toy:
Start with good SolidWorks Model
If it won’t assemble in SolidWorks, it won’t assemble in 3-D
Printing overhangs is a problem – handle in Makerbot Desktop
Create an STL model of each component
Create an .STL model of each component needed
File > Save As
Use File Type pull-down to find .STL (middle of list)
Store on a jump drive
Parts Needed:
All eight* (left and right side are separate) parts of the design packet (team)
One end effector from each team member, if doing the bonus
All parts require an STL file
Put a copy of each file onto a jump drive
Orient & nest the parts in Makerbot Desktop
Save the nested parts – and settings as .Thing
Team Design Product: (turn in by 1:00 PM on Wed. 14 DEC)
5/12/2018
Engineering Graphics & 3-D Modeling

5. Engineering Graphics & 3-D Modeling
Assignments
Makerbot Steps (Outline) on Printer Tablet
Open each .STL file in Makerbot Desktop
Scale inches to mm if not designed in mm to start with
Nest parts near the center of the platform for accuracy
Use Rotate Objects button to select best orientation
Use Move Objects button (and On Platform button) to locate near to, but not overlapping, other parts
Use Settings tab to prepare to print
Avoid overhangs if possible, but if not,
Turn on supports
Turn rafts off (if needed)
Save file as .Thing after settings are set
Prepare to Print
Use Preview tab to verify settings
Check time estimate and note the material weight
Load Material onto spool and into extruder
Click Print!
5/12/2018
Engineering Graphics & 3-D Modeling

6. Engineering Graphics & 3-D Modeling
Final Reminders
Instructor Access:
Office Hours M - Th: 11:00 AM – 11:50 AM
Help Session Tuesdays: 1:00 PM – 2:50 PM
Turn in Project Wed: 1:00 PM Dec 14th
ONE Project per Team
Title Blocks show who designed part (Designer)
Title Blocks who produced drawing (Checker)
Exam Accommodations:
See Dr. Jensen at his office before 5:00 PM Wed 09 DEC
Check HW & Lab scores on web after turning in the Final Exam and before 14th.
5/12/2018
Engineering Graphics & 3-D Modeling