This is an altitude and azimuth mount I made for my telescope some time ago. Very good for just looking across the bay and around the neighbourhood and for showing people interesting parts of the night sky. It is of course much quicker to set up than my equatorial mount which is required for serious astromical activities.
The bits were made before I had a lathe so there was a lot of hacksaw work and the results are not quite as 'true' as one might like!
This is the azimuth slow motion mechanism, the mount runs on balls in a simple ball race arrangement so it is really easy to turn. The drive wires are stainless steel fishing trace which are kept under quite high tension by a spring. The idlers are salvaged from old printer equipment where they were ribbon guides, nice bearings and ideal for the job.
The altitude drive is a similar arrangement.
Now that I have a lathe I should make worm and wheel drives for each of these.