Re: [CAD_CAM_EDM_DRO] questions on cheap DRO

Check out ... yardo on the net....Dave

----- Original Message -----
From: "Harko Schwartz" <ncmeinc@...>
To: <CAD_CAM_EDM_DRO@yahoogroups.com>
Sent: Friday, March 24, 2006 6:34 AM
Subject: Re: [CAD_CAM_EDM_DRO] questions on cheap DRO


> If you are looking to do a edm i suggest Hymark digital tape scale and the
> resolution can be good enough for anything that you want to do and doesn't
> care about dirt and any other type of contamination. The scale also puts
> out differential outputs so you have a better noise free feedback. Let me
> know the sizes that you need and I will get you a great price. Just
> remember glass scales unless you pay more money are only good to about +/-
> .0005 resolution.
>
> Harko
>
>
> On 3/23/06, digitalzeitgeist <digitalzeitgeist@...> wrote:
> >
> > I'm upgrading from the mill on my HF44142 3-in-1 to a new mill/drill
> > from industrial hobbies (30x/12y/5z travel), and want to put DRO on
> > the new mill and maybe also later on the lathe part of the HF44142.
> >
> > I like the documentation/feature set for the Shumatech DRO-350, but am
> > not sure I'll need that much power, as I draw nearly everything I
> > machine out in CAD, and can fairly easily have it print absolute
> > coordinates around whatever point(s) of interest I choose.
> >
> > The 3-axis display that SMW sells on eBay looks fairly primitive
> > (toggle/inch metric, zero each axis), but I'm wondering if it wouldn't
> > be enough and if not, couldn't I always just upgrade the display part
> > of it later to a DRO-350 (and maybe keep that somewhat limited SMW
> > display for the lathe which I use less often/precisely than the mill).
> >
> > Pricing difference between SMW chinese scale kit and DRO-350 with
> > chinese scales (also from SMW) currently looks something like:
> >
> > SMW on eBay Shumatech
> > Display & Cables 430 225
> > 32" X Scale incl 192
> > 12" Y Scale incl 44
> > 5-6" Z Scale incl 40
> > Shipping 8 8
> > Total 438 509
> >
> > A few questions:
> >
> > 1. Can anyone comment on the question of functionality? I can see
> > how the additional functionality of the DRO-350s firmware would be
> > useful if you didn't have dimensioned CAD drawings available, but is
> > it worth an additional $70 and the hassle of assembling the DRO-350
> > from parts if you have proper drawings?
> >
> > 2. Does anyone know if the cables that SMW provides in their ebay kit
> > are plug and play compatible with the connectors used on the DRO-350
> > or if I upgrade later, would I have to buy/build new cables?
> >
> > 3. Also, is there someone that sells just the glass scales? I don't
> > need the extra precision for anything I'm doing now, but have been
> > reading alot about homebrew EDM stuff which at somepoint I might like
> > to fool around with. If it only cost $100 or so more to upgrade to
> > glass scales with the DRO-350, I'd have to seriously consider it just
> > so I'd have them.
> >
> > 4. Are there any other cheap DRO solutions I don't know about that
> > work well?
> >
> > Thoughts, opinions???
> >
> >
> >
> >
> >
> >
> >
> > Addresses:
> > FAQ: http://www.ktmarketing.com/faq.html
> > FILES: http://groups.yahoo.com/group/CAD_CAM_EDM_DRO/files/
> > Post Messages: CAD_CAM_EDM_DRO@yahoogroups.com
> >
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> > [Moderators]
> > URL to this group: http://groups.yahoo.com/group/CAD_CAM_EDM_DRO
> >
> > OFF Topic POSTS: General Machining
> > If you wish to post on unlimited OT subjects goto:
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> >
> > http://groups.yahoo.com/group/jobshophomeshop I consider this to be a
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for OT
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> >
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> > bill
> > List Mom
> > List Owner
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> > Yahoo! Groups Links
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>
> [Non-text portions of this message have been removed]
>
>
>
> Addresses:
> FAQ: http://www.ktmarketing.com/faq.html
> FILES: http://groups.yahoo.com/group/CAD_CAM_EDM_DRO/files/
> Post Messages: CAD_CAM_EDM_DRO@yahoogroups.com
>
> Subscribe: CAD_CAM_EDM_DRO-subscribe@yahoogroups.com
> Unsubscribe: CAD_CAM_EDM_DRO-unsubscribe@yahoogroups.com
> List owner: CAD_CAM_EDM_DRO-owner@yahoogroups.com, wanliker@...,
timg@...
> Moderator: pentam@... indigo_red@... davemucha@...
[Moderators]
> URL to this group: http://groups.yahoo.com/group/CAD_CAM_EDM_DRO
>
> OFF Topic POSTS: General Machining
> If you wish to post on unlimited OT subjects goto:
aol://5863:126/rec.crafts.metalworking or go thru Google.com to reach it if
you have trouble.
> http://www.metalworking.com/news_servers.html
>
> http://groups.yahoo.com/group/jobshophomeshop I consider this to be a
sister site to the CCED group, as many of the same members are there, for OT
subjects, that are not allowed on the CCED list.
>
> NOTICE: ALL POSTINGS TO THIS GROUP BECOME PUBLIC DOMAIN BY POSTING THEM.
DON'T POST IF YOU CAN NOT ACCEPT THIS.....NO EXCEPTIONS........
> bill
> List Mom
> List Owner
>
>
> Yahoo! Groups Links
>
>
>
>
>