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andywalter

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About Me

Retired engineer, worked in R&D in conventional mech engineering (welding, lathe, milling, grinding, ...), microprocessor control systems, moved to IBM & worked on computer graphics research. Currently modifying Ultimaker Original. This now has direct drive (see "Throw away your belts - direct drive" thread) for far better rigidity & precision than belts, plus geared pinch-roller filament feed to eliminate grinding, + Aluminium-frame holding aluminium heated base plate again reducing vibrations & far more rigid than original, + Z-axis height microswitch now fitted to adapted CD-player mechanism to give precise control over Z adjustments. Also mentoring local school doing robotics project - great fun!

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