These instructions are written for teachers’ w/limited woodworking knowledge, skills & tools, in mind who would like to share the joys and experience of woodworking. I can assure you there's no need to be intimidated by the idea or concern of operating dangerous machines or power tools. The only power tool required is an electric/portable drill. Aside from gluing, your students should be able to complete this project in a few class periods. It's a great project to incorporate into a unit on manufacturing or mass production.
It's very inexpensive to boot; an 8-foot 2 X 4 and 3-foot dowel rod will make approximately 5-6 gumball machines for less than $5.00.
Concept: Students will plan and manufacture a wood product as they study woodworking and learn about the "production" industry using an assembly line process. Emphasis on the safe use of hand and power tools to develop "jigs" and fixtures designed to streamline production. Develop an appreciation and understanding of manufacturing and the fundamentals of woodworking technology while organizing and running their own industry. The products or projects are made for their own personal use or to sell.
*Able to describe and apply the design process.
*Interpretation of multi-view, pictorial and schematic drawings.
*Produce a product using a managed production system.
*Proficiency in safe operation of hand and portable power tools.
*Identify safety measures necessary in "production" industry.
*Construct a product displaying craftsmanship and skill.
*Application of quality assurance systems used in manufacturing.
*Recognizing that all jobs are equally important and quality work has a self-gratifying value.
Application: Students will use hands-on skills and manufacturing processes to solve problems in and beyond the classroom...
Before beginning construction, I will cover "How to make a miter box" or "simple jig" that will aid students in cutting straight lines...
Now, Let's Begin!
Step 1: Tools & Materials Required
2 X 4 X 8 feet (Spruce) Tape Measure & Pencil
1 X 4 X 4 feet (Pine) Combination Square
1” Dowel Rod 3 foot Back-Saw or Cross-Cut
Plastic Peanut Bttr Jar w/lid (16.3 oz.) Electric/Portable Drill
Carpenter’s Wood Glue 1” , 7/8”and 3/4" Spade Bits
Foam Sheets (Assorted Colors) Hammer
Multi-Purpose Latex Paint (Assorted Colors) 4d 1-1/2” Finish Nails
Foam Brushes Wood Clamps
Sandpaper (Assorted Grits 100-120) 1/2 Round File
Hot Glue Gun
Step 2: Constructing the Miter Box
Step No. 1 Measure and cut three (3) 12-inch pieces of 1 X 4 pine; a base and two (2) sides.
Step No. 2 Mark a centerlineon the surface and clamp the two sides together making sure the ends and edges are flush.
Step No. 3 With the two pieces clamped together, carefully cut along the centerline with the back-saw. Stop ¾ inch from the bottom edge.
Step 3: Glue & Assemble Miter Box
Step No.5 Before gluing, it's recommended to "dry-clamp" pieces. This allows you to inspect the assembly and adjust the clamps in advance.
Step No.6 You're now ready to glue and assemble the miter box..layout newspaper on the work surface...Have a damp rag or paper towel handy to wipe up "squeeze-out". Squeeze a moderate amount of glue on the two edges of the base and spread evenly. Attach the two sides; insuring that the ends of the base and sides are flush and that the two notches are aligned. Slowly tighten the clamps. There's a tendency for the pieces to slide as the clamps are tightened. If this occurs, simply loosen the clamps, reposition and re-tightened the clamps. After allowing an hour to dry, remove the clamps, and reinforce along the edges w/4d finish nails.
Before gluing, it's recommended to "dry-clamp" pieces. This allows you to inspect the assembly and adjust the clamps in advance.
CONGRAULATIONS….YOUR MITER-BOX IS DONE!
Step 4: Constructing the Base
Step No. 1 Measure and cut two (2) 8-inch pieces of 2 X 4 with the aid of the miter box. Securely clamp the miter box and work piece to a bench top; use short, even strokes.
Step No. 2 Again, “dry-clamp” the base prior to gluing. Before removing the clamps, make an alignment mark, “X”, to avoid accidently assembling incorrectly.
Step No. 3 Glue and assemble base insuring that the alignment marks match and the ends and edges are flush. Wipe off all the excess, “squeeze-out”, glue w/damp rag. Allow to dry 3-4 hours before proceeding to the next step.
Step 5: Lay-Out the Holes
Lay-out three (3) holes (See photos above).
Step 6: Drilling Base
Step No. 1 Drill the 1-inch hole for the dowel rod. Place a “backer-board”, piece of scrap wood underneath the base to avoid “punching” through and accidently drilling into the bench top.
Step No. 2 Drill the second 1-inch hole for the "mouth" at a 45 degree angle, approximately 2-inches deep.
TIP: Start in vertical position and gradually lower drill until achieve 45-degree angle then continue until reach desired depth.
Step No. 3 Drill the 7/8 inch vertical hole, approximately 4-inches deep, until it intersects the 1-inch “mouth”.
Step 7: The Dispensing Rod
STEP No. 1 Measure and cut a 6-inch piece of 1-inch dowel rod: insert the dowel in the 1-inch horizontal hole: centered so there's an equal amount on either side of the base. With a pencil, carefully trace around the outside edge of the 7/8 inch hole on the dowel.
STEP No. 2 Remove the dowel; mark the center of the 7/8-inch hole; re-insert the dowel; centered in the hole; while firmly gripping one end of the dowel, drill a 3/4-inch diameter hole, 3/4 of an inch deep…or until the tip of the bit is barely poking through, if the hole is too shallow it will be difficult if not impossible to turn the dowel; if too deep, it will allow more than one gumball to drop. Sand the dowel rod if having difficulty turning.
NOTE: The depth of the hole is determined by the diameter of the gumball…
Step 8: Peanut Butter Lid
Drill a 1-inch hole centered in the lid. Attach the top to the base with hot glue; allow to cool; then smooth the edges with a half-round file.
THE BASE IS COMPLETED!
Now lays ahead the difficult challenge of deciding how to decorate...
Only limited by one’s imagination…my students chose a car theme...
In keeping with original intent of “simplicity” I chose “fun foam” vs. wood because of the ease with which it can be cut with scissors, painted and attached with hot glue.
Step 9: The Wheels
Should you select a car theme, I’ll cover in more detail how I made the wheels and top.
ADDITIONAL MATERIAL REQ’D ADDITIONAL TOOLS REQ’D:
1 X 4 X 1 foot (Pine) 2- inch hole cutter
Axle Pins 3/32 inch twist bit
1 inch & 7/8 inch spade bit
Front & Rear Wheels:
Step No. 1 On a piece of 1 X 4 X 1 foot pine layout centers for wheels, 2-1/2 inches between centers.
Step No. 2 With 3/32 inch twist bit, carefully drill through each center. These will serve as "center points", so it’s extremely important to hold the drill perpendicular to the work piece.
Step No. 3 On one side, drill 7/8 inch holes, 1/4 inch deep at each center point.
Step No. 4 Flip wood over, drill 1 inch hole, 1/4 inch deep, every other wheel…these will be glued onto the ends of the dowel as knobs. The others will be used for front wheels.
Step No. 5 Cut out the wheels with 2-inch hole saw.
Step No. 6 It will be necessary to slightly shorten the ends of the dowel so that when the wheels are attached there’s about a 1/16 inch clearance on either side to allow the dowel to turn freely.
Step No. 7 Drill holes in the base for the front wheel axles.
Step 10: The Roof Top
Step No. 1 Layout pattern on an extra piece of 2X4. Clamp to bench top and cut with hand saw.
Step No. 2 Glue and attach to body
Step 11: Gumball Machine Rubric
Able to identify 5 hazards & explain corrective action
Able to identify 4 hazards & explain corrective action
Able to identify 3 hazards & explain corrective action
Able to identify 2 hazards & explain corrective action
Able to identify 1 hazards & explain corrective action
Correctly ID, state their purpose & demonstrate proper use of 10/10 tools
Correctly ID, state their purpose & demonstrate proper use of 9/10 tools
Correctly ID, state their purpose & demonstrate proper use of 8/10 tools
Correctly ID, state their purpose & demonstrate proper use of 7/10 tools
Correctly ID, state their purpose & demonstrate proper use of 6/10 tools
Precisely measure a given distance
measure a given distance w/in 1/32"
measure a given distance w/in 1/16"
measure a given distance w/in 3/32"
measure a given distance
Name 3 principal views of object & 3 types lines in sketching (6/6)
Name 3 principal views of object & 3 types lines in sketching (5/6)
Name 3 principal views of object & 3 types lines in sketching(4/6)
Name 3 principal views of object & 3 types lines in sketching (3/6)
Name 3 principal views of object & 3 types lines in sketching (2/6)
Exhibits qualities of cooperation, respect & pride (All the time)
Exhibits qualities of cooperation, respect & pride (majority time)
Exhibits qualities of cooperation, respect & pride (most time)
Exhibits qualities of cooperation, respect & pride (some of time)
Exhibits qualities of cooperation, respect & pride (none of time)
Gumball Machine Rubric
Runner Up in the
The Teacher Contest