Opitec 107.388, Manual

Page: 6 / 13

6
D107388#1
6
D107388#1
6.2 Making the holder and bearings
At this stage you can chose your material
Version 1
Using the holed metal strip, this is easy to bend into the U shaped holder. No need to drill holes..
Version 2
A more testing way is to make the U shaped holder from the aluminium strip
This version has more stages of construction which must be accurately carried out.
The holes must be marked out and drilled.
The instruction show you how to make the aluminium strip version.
6.2.1 Mark or cut out the plan for the holes on the aluminium strip ( See page 9). If you cut out the plan pattern fix it with
sellotape. Mark out and centre punch the holes for drilling. Mark out with a pencil the bending point ( broken line )
in the middle of the strip.
Note!
Only use a pencil to mark out where to bend
so that no weakness occurs in the metal that can lead to it snapping !
6.2.2 Cut the bearings and U shape holder to size with a junior hacksaw
File the ends and round off
Note!
Use vice soft jaws
6.2.3 Drill the 3mm dia holes in the holder and bearings. To make it easier you do not need to drill the holes for fixing the
magnets as these can be glued in position
6.2.4 Bend the ends of the U shaped holder at 90 degrees
Note !
use a vice with soft jaws-ensure that the bends are accurate
6.2.5 Use wooden wheel (13) to bend the holder around. Just fasten the wheel to a piece of wood ( not in pack) and use
the wheel as a former, hold the strip in the middle of the wheel and bend it left and right .
Note !
Ensure that the shape is accurate !
70,0
35,0
5,0
15,0
10,0
20,0
50,0
60,0
70,0
5,0
10,0
28,0
145,0
10,0
147,0
5,0
10,0
28,0
35,0
R 5,0
10,0
37,0
Ø 3,0
Ø 3,0
2x
U shaped
holder
Bearings