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WOOD
TECHNOLOGY
SITUATION
Johnny's waste paper basket is b-o-o-o-r-i-n-g, and he wants to make doing homework more
interesting by using an idea from his favourite sport – Basketball.
 He would like to design a miniature Basket ball hoop to sit over his wastepaper bin;
then he can shoot baskets using his waste paper.
Can you help Johnny with his design?
He has been working on a
few ideas already and likes this one best, but he has been having trouble working out the
best joints to use for connecting the post to the base and the backboard to the post.
DESIGN BRIEF
DESIGN AND PRODUCE (MAKE) A WASTE
PAPER BASKETBALL STAND.
LIMITATIONS
Materials
a) One (1) metre of timber
b) Back board is to be no larger than a sheet of A4 paper
c) Other materials as required by negotiation with your teacher
AREAS YOU MAY NEED TO
INVESTIGATE
Timber joining methods
Materials suitable for the
backboard
Ways to mount the Backboard
Surface finish (if required)
Ways to shape plastics
(working methods)
How to make a basket ball net
LEARNING
OUTCOMES
| PROCESS |
MATERIALS
REQUIRED |
| DRILLING 1. Drill two (2) holes to produce a dowel
joint
2. Use a hole saw
JOINING TIMBER
1. Box Pin Joint (Finger Joint)
PROCESSING P.V.C (Polyvinyl Chloride)
1. Hot Air Welding
2. Solvent Welding - (Cyclohexanone)
Blue Stuff!
Lap Joint
Butt Joint
Tee Joint
3. Strip Heater
4. Sewing Machines |
1off - 42 X 19 X 200, students cut in half
68 X 12 Off cuts
1off - 42 X 19 X 200, students cut in half
1 off - 600 X 30 X 3 P.V.C. sheet
2 off - 150 X 30 cut from strip supplied
2 off - 50 X 30 cut from strip supplied
2 off - 50 X 30 cut from strip supplied
2 off - 50 X 30 cut from strip supplied
Bend material used for Butt Joint
Practice on small material sample
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Polyvinyl Chloride (P.V.C) is tasteless and odourless, possesses good
electrical properties, and is resistant to water, alcohol, acids and alkalis.
Solvent Welding A process of joining thermoplastic material by softening the
surfaces to be joined by a solvent, then holding the softened surfaces together.
(K.J.Dodds)
GRADES 8 / 9
CLOSED DESIGN BRIEF
WASTE PAPER – BASKETBALL STAND
CONSTRUCTION PROCEDURE
SUBJECT:Shop
A.
TOPIC:
Basket Ball Stand.
TEACHER: Mr A.Pettersson
CLASS: Level 211 DATE:
1.
(DESIGN TASK – PROPORTIONS) Students
need to determine the height of THEIR waste paper basket, thereby
establishing the height of the basket ball post.
2. Issue one x one metre length of 42 x 15 timber. (CUT TO
SIZES DETERMINED IN No 1). Students to cut to
predetermined lengths eg: (300 x 200 x 500 approx)
3. Mark out and cut Cross Halving joint.
4. Mark out and cut 5 x 5 chamfers on three ends.
5. Mark out and cut Bridle joint.
6. Mark out and cut 30° chamfer on
the top of the post
7. Sand prior to gluing
8. Glue both joints, (Post is 90°
to the base).
9. (DESIGN TASK - BACKBOARD MOUNTING BRACKETS) or Mark out and
cut Plywood for backboard mounting. Top and bottom edges of ply brackets slope up at 30°.
Advanced students can rebate the ply flush with the outside edge of the post.
10. Glue and nail Plywood brackets to the post.
11. Mark out and cut Acrylic backboard
12. Finish the edges using edge treatment processes.
13. Mark out on the protective paper the border and square, this is
done on the backside of the backboard in preparation for back painting.
14. Cut out using a Stanley knife, only remove paper from area to be
painted.
15. Back paint border and square.
16. Mark out and cut acrylic mounting bracket, use edge treatment to
finish the edges.
17. Teacher to check that the fold lines are the width of the inside
dimension of the ply mounting brackets, LESS the thickness of the two sides, when
the Acrylic is folded up.
18. Use strip heater to fold bracket sides to 90°
. (a jig could be helpful)
19. Solvent bond (Ethylene Di-chloride) bracket to B/board. The
correct position is centrally within the back painted square. BRACKET IS BONDED ON
THE SAME SIDE THAT HAS BEEN PAINTED.
20. Drill two holes in B/board (4 x 15mm centres) for hoop.
21. Make basketball hoop,
f 140 x 4mm
wire. Roll in jeweler’s rollers or use a pipe mandrel,
NOTE! Allow enough straight wire protruding out from the hoop to mount the hoop
through the B/board into holes drilled in the post.
22. Mark and drill holes for metal threads to mount the B/board to
the ply brackets.
23. Fit and bolt in position.
24. Using a drill bit, place through the holes drilled in the Acrylic
B/board for the hoop. Mark the position to drill the holes in the timber post.
25. Fit the hoop through the holes in B/board, continue through to
the holes in the post.
26. Students are responsible for making the net and fitting it to the
hoop. Possible solutions are:
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use an onion bag or
similar
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Macramé a net from string.
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Apply Polyurethane surface finish if required.
TEACHER'S NOTES
A) Joint selected for joining the base to the post could vary between a Bridle joint,
Mortice and Tenon or Dovetail, depending on unit objectives, student level and ability.
B) Mounting the Backboard: slower students can substitute the bonded Acrylic bracket
for:
1) 42 x 19 block of timber screw B/board to timber.
2) Screw B/board directly to post, delete ply mounting bracket altogether.
C) Stopped chamfers could be cut into the four corners of the post to enhance the
appearance.
D) A jig may be required to help locate the Acrylic bracket when solvent bonding to the
B/board. (apply pressure to joint during bonding process)
E) A jig may be required when folding up the Acrylic mounting bracket.
Plywood braces can be fitted to reinforce the base/post joint if the joint produced by
the student is unsound.
MATERIAL LIST
1 off 42 X 19 X 1000 pine timber (Base & Post)
1 off 3mm Plywood, 200 X 60 (Backboard Mounting Bracket)
3 Acrylic sheet, for (Backboard & Bracket)
1 off 205 X 270
1 off 130 X 60
Wire for Hoop, 1 off 5mm X 610
Metal Threads, 2 off 3 X 12 Round Head.
Alternative: 1 off 3 X 50 Round Head.
Red pressure pack spray paint for Back Painting of lines on the Backboard.
12mm Brads.
Materials for edge treatment of Acrylic eg; Wet & Dry paper, Scrapers made from
Galvabond, Brasso, Buff.
Solvent (Ethylene Di-Chloride) plus a dip tray.
Example
provided by ASBJORN PETTERSSON
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