Re: Rod Sizes

--- In CAD_CAM_EDM_DRO@yahoogroups.com, "krashking405"
<krashking405@...> wrote:

>
> Was thinking about using the 2 smaller rods that have their
> carriages with the base.

I thought the large ones had the carriages. I would use those with
the carrage on the base.

Dave


1 on each end with lead screw in the

> middle. Then the Y-axis could use the largest, and the Z could use
> one or 2 of the smaller rods.
>
> --- In CAD_CAM_EDM_DRO@yahoogroups.com, "turbulatordude"
> <dave_mucha@> wrote:
> >
> > --- In CAD_CAM_EDM_DRO@yahoogroups.com, "krashking405"
> > <krashking405@> wrote:
> > >
> > > OK, I have measured the rods I have. Three of them have the
> carriages
> > > that came out of the donor machines, two of these have a rod
> diameter
> > > of 0.35 inches [8.89mm] with a length of 15.28125 inches
> [388.14375
> > > mm], the other is .392 inches [9.9568mm] in diameter, and a
> length of
> > > 17 inches [431.8mm]. The rest have no carriages, I have two
> at .235
> > > inches [5.969mm] in diameter with a length of 10.5 inches [266.7
> mm],
> > > two at .275 inches [6.985mm], one has a length of 16.5 inches
> [419.1
> > > mm] the other is 9.71875 inches [246.85625mm], and one at .305
> inches
> > > [7.747 mm] in diameter with a length of 10.125 inches
> [257.175mm].
> > > What would my approximate work area be? I plan on using the rods
> with
> > > the carriages on the X, Y, and Z-axis. Can I get away with just
> a rod
> > > and lead screw per axis?
> > >
> >
> > Put the heavest rods on the base. If you still have the slides,
> then
> > all you need to do is to adapt the slide to a platform maybe
> epoxy or
> > some such. maybe screws if you have them.
> >
> > if you figure securing each end by 1/2" and a 2 inch long bearing,
> > then you have about 3 inches taken up.
> >
> > figure the dremel will drill down the center of the gantry and you
> > lose an inch on each side from the slides. if it overhangs on one
> > end, you lose the 2 inch on the slides, plus the overhang.
> >
> > If you get a length of 1/2" threaded rod, you could use that as one
> > rail. but, the diameter of the parts is small an you might want a
> 3rd
> > rail.
> >
> >
> > As for end supports, you can use a 1x1 wood end rail and another on
> > top of it. then just bolt them together and sandwich your rails in
> > place. That allows a simple method of getting the ends mounted
> > without high tech stuff.
> >
> > Although your rails are really light, you will be able to have the
> > drill move accuratly to a location. that will allow you to
> manually
> > push the dremel into tougher materials for drilling. This is what
> I
> > do to spot drill holes in aluminum. I use a 1/8" dia center drill
> and
> > just finger press the unit into the aluminum, then take it to the
> > drill press and put in the larger holes.
> >
> > The reason I mention this is because once you get the X and Y
> > movement, you can use postioning to locate holes super accurate to
> > make plates and supports to have the machine help you make parts
> for
> > the rest of the machine.
> >
> > Dave
> >
>