how make a rubber sub-base for machines anni'60-70
One of the most frequent problems that occurs on machines manufactured by La Pavoni until 1983 is the absence or deterioration of the rubber sub-base(after 1983 the rubber sub-base was replaced by a rigid plastic sub-base and screwed on the base). The reaction of the rubber to the time and to the custom varies depending on the quality with which it was produced and environmental conditions. I found rubber sub-base produced 50 years ago more perfect than rubber base 20 years younger. By the time you normally have to form cracks on the edge of the sub-base up to determine the partial or total detachment of the edge. In lucky cases the rubber hardens and remains integer. Obviously the original spare part is out of production for over 20 years so, for solve your problem, I propose a simple and economical solution, the result of which you can see in the photos below.
The idea is not original of
course, already two years ago I saw sell on ebay rubber rings declared
as sub-base for La Pavoni, but I had not given importance.
Here's the result.
verify that the tip of the seal is perpendicular to the cut, otherwise trim with cutter
starting to put the seal on the base on one of the sides, for the convenience
complete the placement on the base
make a sign with the cutter at the point to be cut
do the cut perpendicular
glue the two ends with glue rapid
allow to dry the ring made for a few minutes
insert the gasket so to place the seam on the back
insert the whole gasket
For those not satisfied you can complete the basis by adding the rubber bottom.
Get a rubber sheet of thickness 1.5 mm of the type used to make gaskets
put instant glue on the bottom edge of the rubber
put the machine on the rubber sheet
wait a few minutes and cut it according to the shape of the base
make 6 holes in the rubber for ventilation
the sub-base is finished
insert on the base
and in a few minutes you will have solved a little problem aesthetic and safety
© 2011 Francesco Ceccarelli. All rights reserved.