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RE: [rsa] what to look for in a drill press

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  • Al Margolis(TX)
    Post tool may have wood lathes. There is/was one around South Van Ness and Division. Sears too, but I think the closest is down here in San Bruno. Maybe
    Message 1 of 4 , Jul 22, 2003
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      Post tool may have wood lathes. There is/was one around South Van Ness and
      Division. Sears too, but I think the closest is down here in San Bruno.
      Maybe Orchard Hardware since they carry a lot of the Sears Craftsman tools

      I discovered this place on the web a few months ago but haven't dragged
      myself across the bay to check it out:
      Looks like a great place to burn out a credit card.

      A lot of wood turning activity is focused on making pens and bowls. If you
      Google for "wood turning pen" and similar combinations you will find lots of
      information. Some of that may help with your wheels.

      If I'm understanding your question about the grooves, the formal method is a
      milling machine with a rotary table. A lower cost option might be a Dremel
      tool in one of their drill press mounts. A turntable would be nice, but you
      could probably make a simple jig. Once you have cut the first groove cut
      you can start to add pins to your jig to maintain uniform spacing.

      Cutting metal is very cool, but making wood chips is pretty nice too and
      smells better. Its definitely lower cost and safer. Home Depot and Lowes
      sell some hardwood in small pieces. Add a little stain and some brass
      hardware and you could compete for a beauty prize too.

      -- Al Margolis, founder
      The WEB's newest source for robotics supplies and information

      -----Original Message-----
      From: g0042 [mailto:robotics@...]
      Sent: Monday, July 21, 2003 11:12 PM
      To: sfrsa@yahoogroups.com
      Subject: Re: [rsa] what to look for in a drill press

      > you do need to go the economy route, check for a Harbor Freight
      outlet in
      > your area. They often have no-name power tools at good prices. At
      > you have someone to yell at if you have a problem. There is one on
      the edge
      > of Vallejo on Hwy 29 just north of 37. I think there is one in the
      east bay
      > as well.

      Is there a place to San Francisco that would sell a wood lathe? Home
      Depot doesn't seem to have any. You know, every time I start thinking
      about doing things in metal I end up just doing them in wood. My
      robot's wheels are wood circles and I just realized that I'm going to
      have to make a drive train (since I don't have any powerful motors),
      so I need to make some hubs/sprockets (or whatever you call the things
      that the chain or rubber band go around to connect the motor to the
      wheel). To do that I need a wood lathe.

      How do people make horizontal grooves on hubs/sprockets (or whatever
      they're called)? I now I can use a lathe to dig a trench into the
      outside of the circle, but how do I make evenly spaced horizontal
      grooves? I'm tempted to just cover the inside of the hub with some
      sand paper. That should increase the friction between the hub and the
      rubber band.

      I was going to use the drill press to make some large wheels, but I
      decided to just live with 6" wheels (the largest size of the hole
      cutters I have found).

      SF robot meetings are at Noon on the first Saturday of the month at SFSU's
      Science bldg - 1600 Holloway, room SCI 256.

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