Pulley System for Heavy Kiln Lids
part five of a multi-part series setting up a pulley system for heavy
kiln lids. Click here to go to part one.
Now that we've discussed the pulley, the rope or
wire, and securing the rope or wire to the handle of the kiln lid,
there's really only one more major topic to discuss. It deals
with the securing the other end of the rope or wire,
which is used to hold the lid open once the
pulley does its job.
In most cases, this is
done with a
counterweight attached to the other end of the rope or wire. Common
weightlifter's free weights can be used as the counterweight, but
it's possible to use any heavy object. One advantage of free
weights is that the weight can be varied so that it's easier to
determine the exact amount of weight needed. The photo at left shows
the simplest kind of installation, with the rope (or wire) threaded
through a hole in the weights.
(Photo courtesy of Rebecca McGlynn.)
you've chosen to use rope, it's also possible to simply tie the rope off with a
bracket screwed to a wall. This allows for easy adjustment of
the height of the kiln lid opening. This can also be achieved
without a tie off arrangement, but it requires some experimentation
to determine the precise amount of
counterweight required. (Photo courtesy of Dee Janssen and Kay
Coming soon - the next part of
this tip, which will be a step by step discussion (complete with
materials listing) of the building of a pulley system with
counterweights for a two-handled coffin kiln lid.
Copyright 2006 Brad Walker. All rights