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b) If the hole is only small, cut out a round patch of no less than 60mm diameter. Larger holes or cuts will
require proportionately larger patches but always ensure you have at least 30mm of patch around the
perimeter of the cut or hole and the corners are well radiused.
c) Next hold the patch on the tube and mark out around it with a pencil.
d) Use a grinder, course sand paper or scratch stone, rough up both the back of the patch and the area
marked on the tube.
e) Clean both surfaces with solvent and spread a thin layer of adhesive over them ensuring there are no
lumps.
f)
When the first coat is dry to the touch (about 10 to 15 minutes) apply a second thin coat. After waiting 5
or 6 minutes, touch the adhesive with the back of your hand. If it no longer appears wet, heat both areas
with a hot air gun to re-active the glue and join the patch to the tube and then clamp or roll the surfaces
together. For the best adhesion, roll over the patch with a roller or over the bottom edge of a bottle.
Danger
Glue and solvent used for repair are highly flammable. Perform repairs in a well-ventilated area. Avoid breathing
the vapors, wear protective gears (goggles, filter respirators, latex gloves).
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