This post will be meaningless to most people, but I’m putting it up because I believe I deserve some props for actually finishing this project. I was highly motivated to do so because I love this Otari half track mastering deck. It has been an amazingly valuable piece of equipment to add to the already stunning studio we have.Since the deck is heavy, and I wasn’t sure of the construction material of the machine frame, I decided to put some steel flat in behind the machine frame to distribute the load more evenly. This was not as easy as it sounds, as I had to try to determine what size screws to use. Sheer strength is the primary thing I was looking for, and somebody may need to correct this but I found a site that said that sheer strength is roughly 60% of tensile strength, which left me with roughly 3600 pounds per screw (each side got four 10-24 screws). Sounds like overkill, right?
All those had to be tapped. The bolts that go out to the aluminum angle had to have holes tapped for them, too. Four 1/4″-20 bolts on each side.
Now I have never liked working with metal since 7th grade shop class. My hands are too tired to be tapping these holes, especially when I had to redo several of them due to inadequate equipment (should have had a drilling jig, I think). I think I worked about 9 hours total on this project, which a good machinist could have probably knocked of in about 3 hours or less. It has killed my back, hands, shoulders, and so on, but who else can I get to do this stuff? So each time I worked on it I had a horrible FMS reaction that evening and the next day. But I plowed on.
Here it is. I didn’t bleed much, but I did a little. I personally think it’s worth it.