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60ft Turntable Construction - 7


Focalplane

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The Turntable Saga continues after a break of around one month. The last post noted that the back ordered parts finally arrived as I was leaving France. Now back for a week or so, I found myself looking at a half completed kit of parts and was not quite sure where to start.

 

Then I remembered that the missing parts were the bearings for the wheel frame assembly. These have to be mounted using a total of 32 M1 bolts and nuts. M1 size is almost microscopic and the location of the inside holes makes one wish that the movie "Honey I shrunk the Kids" could be feasible. But all it takes is patience and a variety of techniques developed on a hit and miss basis. One technique for getting the nut to thread onto the bolt is to balance it on the end of the bolt thread and carefully nudge it in a clockwise direction. Getting the nut to balance may take a while and then there is the chance that the nut will flick off and it's "start all over again, again".

 

Another technique is to hold the nut over the hole with a thumbnail nail and pass the bolt through the hole to engage. This works some of the time but not on the inside of the wheel carrier as my thumb is too large. Each bearing is held with four bolts and there are four to each wheel carrier, making a total of 32. So far I have successfully attached 12 and feel quite pleased with myself.

 

I have tried the blu-tak trick with no success at all.

 

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The photo shows one wheel carrier with a loose bolt and nut to show how fiddly this part of the assembly is.

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I'd be tempted to say "sod it", tin everything and apply a hot iron. Crude is my middle name! Good luck with the other screws.

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It could be worse still.  The instructions suggest that the bolts would have a better appearance if inserted the other way round, with the nuts visible, as on the prototype.  However, I tried this and it required trimming the length of the bolt in order for it to fit between the "U" section.  In the process this harms the thread, making fitting the nut even more difficult.

 

I have a slight cheat plan for the hard to fit and hard to see inner bolts - Araldite!

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