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Type: Posts; User: Ken M

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  1. Tried the suggestions but have not come up with a...

    Tried the suggestions but have not come up with a solution to the X-axis chatter issue. :confused:
    There is an issue that sticks in my head and makes me think it could be the X motors. I was told...
  2. Set pinions into rack with a scale to make sure...

    Set pinions into rack with a scale to make sure we have recommended pressure into rack. What is curious is I only get this serration in the X axis not in the Y.
    Ran motors off the rack, checked for...
  3. Serrated edges on all cuts on hdpe. Did not...

    Serrated edges on all cuts on hdpe. Did not change feed and speeds which have been working fine (some serration of edges but usually only in curves and even then not to this degree). Checked square...
  4. I have the same issues as QMI and have gone...

    I have the same issues as QMI and have gone through ALL (I think) the steps recommended. For my PRS Alpha the worst chatter is in the X-axis. It is perplexing to say the least. It really showed up...
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    Help machining aluminum training knife

    Looking to make a training knife out of 1/4" aluminum. Have machined aluminum previously but they were simple two dimensional objects (wrenches). Feed and speed recommendations worked well (as have...
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    It loosened so much that it dropped to the bottom...

    It loosened so much that it dropped to the bottom of the extrusion. There is no mark as to where it was so I'm not sure where to place it. 3" from the top of the extrusion? 6"? I don't remember...
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    Z axis target bolt moved

    I have an Alpha with a spindle and an ATC. Noticed the machine was traveling kind of high in the Z on the way to a tool change and sure enough the spindle was not where it was supposed to be to put...
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    Plenum sealer

    Does the plenum board need sealed with polyurethane? I see several mentions of it in the forum but it does not mention this in the shopbot supplied directions. Is this step optional? If needed...
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    Dust collection and ATC

    Putting together PRS with ATC. Trying to mount the spindle and the thumb screw for the dust skirt arm sticks out to far to allow the spindle to mount to the plate without pushing against the top of...
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    Installing plenum board

    Just started building a 48 x 96 PRS. Installed the deck and was going to put on the plenum and noticed that the decking is 48 x 96 and the MDF is 49 x 97. Should the MDF be cut down to 48 x 96 or...
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