Re: [CAD_CAM_EDM_DRO] Reed switch for limits - anyone done it?

Hi Matt,

I get an error trying to open the dwg, "possibly R14 beta format", and
overrun. Any chance you could post a DXF?

Was not able to find Digikey URL, but found the switch on:

http://www.solveit.omron.com/sealedswitch02.htm

Yeah, sounds like a major task! I'd still like to figure out where you
mounted 'em.

Thanks for the info!

Alan KM6VV


Matt Shaver wrote:

>
> On Thursday 15 August 2002 09:40 pm, you wrote:
> > Hi Matt,
> >
> > How much info can you supply? a pix of brackets and switches you used,
> > and a text description of where each goes (i.e., "left end of X bed...")
> > would help! Or even a drawing (DXF, JPG, etc) of the brackets.
>
> There's a link to my "working" (i.e. sloppy) drawing at the bottom of this
> page:
>
> http://users.erols.com/mshaver/index.htm
>
> Download sherline.dwg, it's an ICAD/ACAD drawing file made in Intellicad
> (under Linux using WINE I might add... just in case anyone cares...). This
> design requires no modifications to the Sherline mill, but a lot of details
> (like screw lengths, assembly instructions, etc.) isn't in this drawing.
>
> > If you
> > are using std. micro switches, we can probably figure out which switch
> > is used. Give us some hints!
>
> No need to guess, it's this:
>
> http://rocky.digikey.com/WebLib/Omron Web Data/D2SW.pdf
>
> > Alan KM6VV
> > P.S. Want to sell a set of brackets?
>
> Yes, and no. I did this design with the intention of making a bunch and
> selling them, but:
>
> 1. There are a lot of parts including nylon tipped set screws, an Allen nut,
> etc. and the cost really starts to add up.
>
> 2. Producing a complete professional set of detailed installation
> instructions with photographs, line drawings, and exploded views would be
> very time consuming.
>
> 3. With all the parts, in small quantities, the cost per set could be $200.
> Who would spend that kind of money on limit switch brackets for a $600 mill?
>
> 4. If I cranked out a big batch they'd be lots cheaper, but I'd have to sit
> on all that inventory until I broke even, and I haven't a clue what the
> demand would be (this is the classic engineer's dilema).
>
> This is why I've settled on building high quality, turn-key systems. Once I
> finish the cnc control design I'm working on, I can start building up
> complete cnc systems based on Sherlines and other larger machines.
> Ironically, it would then be easier to justify selling parts because I'd have
> them made periodically anyway to support the production of the complete
> systems, the profit from which which would make the whole scheme economically
> viable.
>
> One more point (from MAKING MONEY THE OLD FASHIONED WAY By Joe Martin,
> President of Sherline, Inc):
>
> "DON'T MAKE SPECIAL ACCESSORIES FOR OTHER PEOPLE'S SPECIALIZED PRODUCTS"
>
> "A risky venture is to design and build products that can only be used with
> another specialized product. You would be at their mercy. A design change and
> your product will only fit their old models. The type of product I'm thinking
> of is not an accessory that would go with many motorcycle models but an
> accessory that would be used with another accessory; that is, a specialized
> accessory for a specialized accessory."
>
> Like limit switch mounts for a Sherline mill...
>
> I'll try to take some pictures of the next one I put together!
>
> Matt