Author: rmilstead

today – quiz at the end of class after we have worked with 123d Design CAD tool:

tech news – how can I 3d print if I don’t have a 3d printer?  What if I want to print in GOLD or PLATIMUM? Try  Shapeways or Ponoko.

CAD – 3d printing

1. sit in your assigned seats.
2. login to your computer.  Let me know if you are having trouble logging in.
3. launch Autodesk 123d Design on your computer.
4. we will explore 123d Design together
5. click here for the online quiz – I will give you the password when we are ready.

sample image – Batman logo (download to your computer)

convert jpgs to svg files

First 3d printing assignment – keychain

Welcome to Principles of Technology!  I’m excited to work with you this semester.  

To help Mr. Varvil and I to get to know you better, please take a moment to complete this short survey.  Click here for the survey. 

Today we will review the basics of CAD/CAM and dive into creating our first design.

Welcome to day one of Principles of Technology. 
Today’s agenda is as follows:
– Discuss the purpose of this class
– Show example class projects
– Scavenger hunt through room 506
– Marble maze kick off

Today’s goals:

Complete and submit your MultiMeter design as an attachment to Bvarvil@tamdistrict.org

Create a blog post titled “CAD/CAM with PlasmaCAM”. On this post, include:

• Picture(s) of your cardboard version of your multimeter design
• screenshot(s) of the CAD PlasmaCAM design you created using relative coordinates.
• Pictures of your cut multimeter (If it gets cut)

Copy and address the prompts in this post:
1)”What is the goal of this CAD/CAM Project as you understand it? What are the learning goals as you understand them?”
2)”Describe your project. What is it? What does it do?”
3)”Describe the measurements that are critical for this project to be successful”

Varvil instruction (20 min)

Hole Saw Bits

Belt Sander

Bell Installation

Chute Installation

The Hole Saw is a helpful tool for cutting large circles. Many of you have bells mounted within a wooden piece, like the example below. This circle (the arrows are pointing to this circle) is a challenging cut for the bandsaw. I recommend using a hole saw instead.

Here is the three hole saw parts

To assemble, screw the hole saw bit onto the Hole Saw Driver until it stops. Then unscrew the hole saw bit slightly until the pins on the hole saw driver align with the holes on the hole saw bit. Push the pins through the holes and it will look like the image on the right, below.

Now it is time to put in the centering bit:

Notice the flat head screw on the hole saw driver. This is called a “set screw.” This set screw is designed to pinch the flat spot on the centering bit. Be sure the flat sides are aligned with the set screw. Push the centering bit into the hole saw driver so that a little bit of it sticks out beyond the hole saw. Screw in the set screw so that it holds the centering bit in place.

You are now ready to use the hole saw as you would any other bit. The hand drills work for smaller hole saws, larger hole saws should only be used in the drill press.

Instruction from Varvil (20 min)

1. Types of holes

Pilot holes
Through holes
Countersunk

2. Types of screws
Flat, Phillips, Box (bugle or square), Phillips/box combo

3. Tips to drilling success
Aligning the axis of rotation

Work for today -shared by partners.  Each of you should be hands-on with the tools.

1. Mark two screw locations on each of your maze pieces. If design is not approved, make the described changes.Get design approved.

2. Take a photo of your final plan with the screw locations. (POST THIS PICTURE TO YOUR BLOG TONIGHT)

3. Align and clamp your front panel and back panel together. Drill pilot holes through BOTH boards. (This will keep your maze pieces in the correct spots after you cut them out)

3. Unclamp your panels and take your front panel to the band saw. Cut out your maze pieces. Be sure each partner has the opportunity to make cuts. Note: you will be cutting through the paper plan. Respect the Silver Circle!!

4. Use a through hole sized drill bit to expand the pilot holes in your maze pieces to the throughhole size.

5. Countersink the through holes on your maze pieces

6. Mount your maze pieces to the back panel using 1.25″ box head screws

Document your work and tool use by taking photos.  Be sure to get a shot at the end of the day of your progress with pieces mounted.

Homework:

Update your blog with the photos and answer the following questions:

1. What did you use and what did you learn today?

2. What did your accomplish on your Marble Maze today?

3. What will you work on next Tuesday?

We will have succeeded today if you and your partner have…

1. Completed the back plate. Turn in by hanging it on the maze board
2. Completed the final draft of your plan. Tape it to the front of your back panel

Things we forgot to tell you. Sorry.

1. Your plan will be glued onto a piece of wood and you will be cutting through the paper to create your maze pieces. This means that your plan is your actual cut lines!!! Make it exactly as you want it.

2. The ball is 0.75″ (3/4″) in diameter. Be sure the path is always wide enough for the ball to pass

3. The bells may hang slightly off the side of the board. As long as the center of the bell is within the board, you are good to go.

Instruction for today. (20 min)

The Makita Drill:
– “Righty tighty, Lefty Loosey”    Switching back and forth
– changing bits

Pilot holes and screws:

Jorgensens and the drill press

Work for today.

You and your partner should look at our comments on your plan. Make modifications as necessary.

You should then work to create the back panel using the example as a guide.

DOCUMENT YOUR WORK!!!    DOCUMENT YOUR PROGRESS!!! TAKE LOTS OF PICTURES!!!

Homework: update your blog with text and pictures that show what you and your partner learned and completed today.  Examples: photos of you using the power drill, a picture and description of your final Marble Maze design.  This is due on your blog before Thursday’s class.