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Trying to re-engineer a mechanism which is cooled to 77K. The motors and microswitches keep failing at these temps. I need to change things. Does anyone have any suppliers of cryogenic rated microswitches and encoders. I need high repeatability so need a datum switch and step counting is not...

Hi Guys, I'm thinking of getting out company to upgrade from MDT4. Do any of you have any advice on if this is worth while? Should we just upgrade to MDT6 or Inventor? Does anyone know when autodesk will stop upgrades from MDT4? Any help/advice on this would be useful. Cheers

Doesn't putting a vuccum on the tank lower it's freezing point. I know we have done this to increase boil-off times.

Tony,<br><br>Cheers, thats exactly what I was looking for. I shall go away now and carry on with the testing.

I am new to the field of vibration testing and this may or may not be a trivial question. Please be gentle.<br><br>I've recently carried out some vibration tests on an optical table. The results from the accelerometer are given in m/s/s at a known frequency. How can I convert this to a...

I am trying to design a series of lens mounts which can be used at 77K. Obviously I need to align them at room temperature, but I need to maintain this alignment. The lenses need to be concentric to 20microns, and maintain this through all gravity vectors!<br> <br> I would appreciate any...