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  • schoolie 10:30 pm on July 31, 2013 Permalink | Reply
    Tags: Craigslist finds, ,   

    Bringing home a new project – a Rong Fu 45 Mill 

    A few weeks ago, my Craigslist RSS feed returned a listing for a mill for $300 only a half hour from my house. It was an RF-45 clone that the seller described as a “project.” The RF-45 is a much more substantial mill than the X2 mini mill I currently have, so I was intrigued to say the least. After a bit of thought and contemplating if I had room in the garage, I decided to give it a shot and contact the seller to get some more info.

    It turned out that the previous owner had begun a CNC conversion on it, and in the process had milled a large pocket under the table in an attempt to fit a much too large ballscrew on the X axis. The mill was disassembled, but all the stock leadscrews and handwheels were included, except for the Y axis acme nut. The seller had intended to finish the CNC conversion that the previous owner had so poorly started, but never got around to it since he already had another CNC set up in his garage. Fortunately, he held on to all the parts necessary to run the mill manually. I’m not quite ready to jump into the world of DIY CNC just yet :-).

    All in all, it seemed like a pretty good deal, so I arranged to pick it up the next day. Now I had to figure out how to move it. 700 pounds of chinese cast iron doesn’t just jump in the back of a truck…

    (Read the rest of this post…)

     
  • schoolie 5:43 pm on February 13, 2013 Permalink | Reply
    Tags: Craigslist finds, , , ,   

    Getting acquainted with our new (old) Hitachi Oscilloscopes 

    With the goal of expanding our electronics tinkering/troubleshooting capabilities, I’ve had my eye out for a cheap oscilloscope on craigslist or eBay. The search paid off a couple months ago when I picked up two old analog Hitachi oscilloscopes, along with a square wave generator and a couple other vintage items.

    The scopes in question are the Hitachi V-152F and V-134, seen below. I haven’t been able to locate any date of manufacture for these things, but they’re completely analog. The 134 even has an analog storage function, which is pretty cool.

    Hitach V-134 (top) and V-152F (bottom)

    (Read the rest of this post…)

     
    • Greg Leeming 8:43 pm on November 3, 2015 Permalink | Reply

      Hi, noticed you have Hitachi V-134 scope – have you located a users manual for it?

      Just purchased the scope

      Am also building MC-2100 based controller for my lathe – really appreciate your posts – have been really helpful

      Thanks

      • schoolie 9:50 pm on November 3, 2015 Permalink | Reply

        I haven’t found a manual for the V-134. It’s pretty similar to the 152, with the exception of the trace storage function. I might be able to help you out if you’re trying to do anything in particular. Good luck!

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