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ante posted:Seems to me that the linear rods are necessary for accuracy. I could lower the platform like you say, but then there's nothing stopping the side-to-side motion or the up-and-down. Square tubing isn't exactly built to tight tolerances, so bearings wouldn't go over the surfaces perfectly smoothly. The rods seem pretty dodgy. I don't think you'll get the rigidity you're looking for, especially in the center of the range. There's also no simple way for a hobbyist to "true" the bearing surfaces. Much easier to use a flat surface and lap the ways against a reference surface (sheet glass is a great poor man's surface plate) before lapping the carriage against the ways.
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Nov 6, 2013 01:08
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There's no way that thing can hold 2 tenths with a 25 lb mass, some dodgy looking ways, and a table supported on one side only. The spindle looks surprisingly decent yet I doubt its runout is even nearly that low. edit: Really don't think I trust a machine tool designed and assembled in a shop that consists of a computer and an incorrectly supported surface plate. sixide fucked around with this message at 03:21 on Nov 22, 2013 |
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Nov 22, 2013 03:15
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Noise is heavily dependent on the operation, material, and chip load. Drilling isn't a big deal except for the initial penetration. It can be mitigated by step drilling. Turning is generally fine unless you take deep or interrupted cuts. Running a fly cutter is pretty much out of the question. Grinding will drive your neighbors nuts. If you were running a small Taig or similar mill and take moderate cuts in soft to medium plastic, you might be okay.
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Apr 30, 2014 23:48
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If you can machine the part, you can probably machine a close-fitting mounting fixture. Still have to clamp it down somehow, though. Vacuum would make sense.
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Aug 12, 2014 23:02
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