Lee Valley Tools    Woodworking Newsletter
   Vol. 4, Issue 1
   September 2009
 
   Hope Mill Restoration
 

In 1999, the Otonabee Conservation Foundation (OCF) established a program to restore the mill to a structurally sound educational and heritage center. After vandals burned a section of the roof, insurance covered part of the restoration costs. The OCF restoration team raised funds to repair the remainder of the roof. Auctions, dances and raffles provided us with additional operating funds. We solicited help and donations from various businesses and asked clubs and professional organizations for funding assistance.


A restored planer, also called a sticker   Table saw
A restored planer (left), also called a sticker, and table saw (right), both of which are much heavier than modern electric equipment and are powered by water turbines via a number of pulleys and belts.

Restoration Begins
Once the new roof was in place, a civil engineer inspected the building and gave us a list of repairs needed to make the building structurally safe. The tailrace water, after passing through the turbines, flowed under the wooden floor and back to the river. This caused excessive rotting of floor support members and the floor in the machine shop collapsed. The first task was to tear out the floor in the affected area and pour a concrete pier the length of the building to contain the water and provide new supports for the floor decking. The bedrock is limestone and about 4' below floor level. We had to dig out remaining overburden and muck to expose the bedrock. The reinforcing steel for the concrete pier was driven into 12" deep holes drilled into the bedrock. At one point, we were merrily digging in the muck and an elderly visitor commented that we were digging where the indoor privy had been located. It hadn't been used for 50 years, so the residue was well decomposed.

We put stop logs in place and drained the penstock. We then removed both turbines and related gearing, bearings and shafting. A local company agreed to rebuild both turbines and repair a large broken gear casting. In order to get the turbines out of the building, we had to move them in pieces through the penstock. A mobile crane with a 70' long boom was used to remove these parts, some of which weighed a ton.
 
 
             
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