25. January 2010 20:31 by Brian in RC Models - Comments: (1)
When we purchased the milling machine which was later converted to be CNC we also purchased a Axminster SIEG C1 Micro Lathe, the lathe was ok for working with larger materials (over 3mm) but due to excessive vibration from the machine when it was running it wasn't possible to work smaller materials and get a consistent finish.
Recently we needed to make some small parts on the lathe and found that it wasn't possible so we decided to see if we can improve it!
Removal of the covers and replacement of various parts narrowed the source of the vibration to the standard pulleys which had over .5mm offset which caused a lot of issues and the motor mount which flexed a lot when under load.
The original machine before starting work.

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19. January 2010 14:40 by Brian in Apple - Comments: (2)
Yesterday my old G5 Apple iMac started to crash and have screen corruption with windows appearing to freeze and then leave parts behind when moving around. After a hour the computer was crashing as soon as it booted and the startup logo developed distortion and lines across the screen and ended up with the display being completely unusable.
After removing the cover on the iMac I found that 4 of the capacitors on the main logic board had expanded and blown which were located in the areas circled below.

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