Re: [CAD_CAM_EDM_DRO] Help: Drilling precise holes

Dan - are the plans for your unit available? I'd like to see how you laid
things out in comparison with Roberts design.

Re: Seattle Robotics Society - are they still meeting? I'd like to get
involved and meet some local folks.

I laid out and center punched the holes last night, no response from the
list from a local to help me drill them, so I will try the alternate methods
that folks suggested over the weekend.

I need some advice, I want to move into machining aluminum immediately and
Robert is going down the path of using a dremel as the mill head, which
pretty much limits you to drilling circuit boards and light weight plastic.
I intend on milling aluminum blocks that are no more than 6"x4"x4" to start
with. What would list members suggest as far as a milling head? I don't
mind spending the $$$ for the proper unit. Mail-order or internet
availability would be ideal.

Thanks All!
-Dan

----- Original Message -----
From: "Dan Mauch" <dmauch@...>
To: <CAD_CAM_EDM_DRO@yahoogroups.com>
Sent: Tuesday, May 01, 2001 6:55 AM
Subject: Re: [CAD_CAM_EDM_DRO] Help: Drilling precise holes


> Bob Nansel has called me several times about his articles in Nuts and
> olts( Bob Nansel and I met at the Seattle Robotic Society meetings and
> stayed in contact after his move to Pennsylvania). He is essentially
making
> a variation of one of my older works.
> The four holes for mounting the Enco X-Y mill/drill table are not
critical.
> What you want to make sure of is that the position of the XY axis can be
> located where you will have the maximum coverage from the Z axis. I used
the
> XY table as the template and scribed the holes, then center punch, pilot
> drilled then drill the holes. If your holes line up with the XY table
when
> your done then you did fine.
> The ( he calls it the tower) Z axis was unclear in his article. But what I
> did was to completely assembled the Z axis including the power head. I
put
> a small bit into the power head and then positioned the Z axis over the
> point where X=0 and Y=0 Then I scribed the holes for the Z axis on the
base,
> center punch them, pilot drilled them then drilled the holes.
> Dan
>
>
>
> -----Original Message-----
> From: Dan <dansmsn@...>
> To: CAD_CAM_EDM_DRO@yahoogroups.com <CAD_CAM_EDM_DRO@yahoogroups.com>
> Date: Monday, April 30, 2001 4:52 PM
> Subject: [CAD_CAM_EDM_DRO] Help: Drilling precise holes
>
>
> >I'm building a CNC machine based on the one Robert Nansel has been
> outlining
> >in his monthly article in Nuts and Volts magazine, and I've come across
an
> >issue.
> >
> >The base of this particular machine in my case is a chunk of steel
channel
> >that is 12"x24"x4" and .5" thick. To mount the X and Y table as well as
> the
> >upright that the Z axis bolts onto I need to drill a series of holes
> through
> >the channel, of couse the channel is *far* too big to fit onto my drill
> >press... is it possible to accuratly drill such holes by hand? I'd
> >appreciate any hints.
> >
> >Thanks,
> >-Dan
> >
> >
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