So I've mostly gone with an idea Lee suggested, using 4mm pneumatic connectors/tube to supply lubrication to inaccessible parts:
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On the HGH15's I couldn't find any suitable adaptors so had to turn up some barbed brass push on thingies:
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Tried the same on the long axis, but then realised they would foul the ballscrew covers:
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Tried spinning the ballnuts through 180 degrees but then found everything was seizing up - turned out the ballnuts weren't concentric on the screws - thanks Fred - so those are going to have to be a manual lube.
On the subject of lubrication, does anyone know where I can buy a sensible quantity of synthetic semi-fluid grease please? Looks like to be the DB's for this sort of setup.
Z-axis ont' gantry:
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So onto the wiring... Found that the closed-loop steppers have the connectors on the encoder cables of such a length that they would sit in EXACTLY the wrong place - half way down the drag chain
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....so had to do some inline splicing......
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and to finish off added a touch off probe socket into the base
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So onto the wiring