6.1.4 Saw 4 lengths of 30m long dowels (4) and use them as spacers between the supports.
Glue them in position
Note:
From this point on in the plans the description will show the version of the design using the halving
joints.
6.1.5 Cut a 60mm length (5a) from the welding rod (5) and remove any burr from the ends with a file. Glue a woo-
den ball (13) on the end of the rod (5a). Then insert the metal rod through the 2,5m dia hole in the middle of
the see-saw top. Add a washer (9) and push the rod through the central hole in the base, add a further was-
her (9), then finally another wooden ball (13) The see-saw top should be able to swing up and down freely
on this axis.
6.2 Making the Mechanism
6.2.1 Bend a length of welding rod (5) into a bow, see the pattern shown page 9. File any burr from the ends of
the rod.
Note:
A length of plastic water pipe ( 90mm dia) or an empty wine bottle will serve as a bending former
6.2.2 Bend the other welding rod (6) to the arm shape shown on the pattern (see page 9) and remove any burr
from the ends.
6
E104689#1
4
13
13
5a
9
60
90
85
15
1
10
10
4
Ø 22
70
4
60
90
85
15
1
10
10
4
Ø 22
70
4
5b
6
