Friday, November 12, 2010

Overhead projectors

Tim Rorabeck took some much deserved time off Thursday and Friday of this week - the two days I usually commit to volunteering toward completion of my first semester practicum. While no progress was made this week toward my twenty-five volunteer hours, I did make significant progress on Thursday and Friday last week.

On Thursday November 4th, Tim took me to the second floor television storage area and put me to work taking apart several overhead projectors and stripping them of their most valuable parts. Powerful incandescent bulbs, mirrors, glass lenses and plastic Fresnel lenses are among the spare parts most in demand for the repair of overhead projectors still in active service.

As was the case with previous disassembly work, the first overhead projector took me much longer to take apart than subsequent units. Learning how these units were put together is the key to taking them apart systematically. Most of the discarded overhead projectors are Bell & Howell machines. They look as though they were made between the mid 1970's and the early 80's.

Thursday morning I was only able to disassemble four of these units. On the afternoon of Friday November 5th there were three of us working - Nicholas Slade, Calvin Vansickle and myself. Together we were able to finish taking apart dozens of units. There are at least half a dozen left to disassemble. Tim seemed very pleased that we were able to clear so much storage space in the storage area in so short a time, and I am pleased to have passed the half way point of my volunteer time commitment. Fourteen hours volunteered, eleven more to reach the required twenty-five hours.

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