CAD CAM EDM DRO - Yahoo Group Archive

Re: [CAD_CAM_EDM_DRO] Positioning

Posted by Hannu Venermo
on 2014-06-07 10:52:15 UTC
Some yes, some no.
Have you ever made a zero-backlash rotary, for astronomy ?

> Obsession with precision is the realm of the noob, they eventually buy a
> machine and discover not only is it hard to achieve, but unnecessary.
>
> At that point they get side-tracked by either the fun of making stuff, or
> building something bigger and/or faster.
>
> Some people never get past that first point.
>
Yes !
> I've gotten side-tracked by lasers, and no-one talks about precision. They
> all cut better than a thou, so any discussions are a bit pointless. Things
> like bevels, smoke control, back-flash, auto-focus etc are more
> interesting.
>
> (Lasers can be a bit too precise. I made some little lidded boxes (MDF) a
> while back; the lid went on, and didn't come off. A vacuum (ok, low
> pressure) packs a lot of force. Even had finger notches. Cut new ones with
> just a whisker of clearance rather than none.)
>
Yes .. and no.
Modelmakers need to have good fits, so the engines run.
> Besides, good design and technique will beat "precision" most days, and
> probably every day in the hobbyist field.
>
YES !
> Suppose you need two plates with identical holes bored though them. Do you
> obsess with trying to bore the holes one by one precisely as possible,
> or do
> you clamp them together and drill both at once? So they're a thou out,
> they're precisely matched and that's more important. Want more? Use the
> first as a guide to make the 3rd and 4th. Making engines? Learn how to
> lap, and match the piston to the cylinder.
>
No !
> People who think they're working in microns are kidding themselves.
>
No!
Handwork to microns is feasible.
Lapping,scraping,optics,bearing fits.
> People who think that machine in their shed is capable of microns are
> kidding themselves.
>
No.
I am fitting P2 bearings.
> People who think you need to work in microns are really kidding
> themselves.
>
> Ah well, we all need a hobby. Fantasising counts, I guess.
>
> Tony

--
-hanermo (cnc designs)

Discussion Thread

David G. LeVine 2014-06-01 14:52:58 UTC Positioning Hannu Venermo 2014-06-02 04:31:36 UTC Re: [CAD_CAM_EDM_DRO] Positioning Tony Smith 2014-06-02 05:55:45 UTC RE: [CAD_CAM_EDM_DRO] Positioning Hannu Venermo 2014-06-02 22:08:15 UTC Re: [CAD_CAM_EDM_DRO] Positioning Tony Smith 2014-06-02 22:46:24 UTC RE: [CAD_CAM_EDM_DRO] Positioning Hannu Venermo 2014-06-03 01:10:22 UTC Re: [CAD_CAM_EDM_DRO] Positioning Tony Smith 2014-06-03 02:02:35 UTC RE: [CAD_CAM_EDM_DRO] Positioning Keith Burton 2014-06-03 03:35:10 UTC RE: [CAD_CAM_EDM_DRO] Positioning Tony Smith 2014-06-03 06:40:53 UTC RE: [CAD_CAM_EDM_DRO] Positioning Hannu Venermo 2014-06-03 09:46:21 UTC Re: [CAD_CAM_EDM_DRO] Positioning John Anhalt 2014-06-03 10:28:10 UTC Re: [CAD_CAM_EDM_DRO] Positioning Christopher Erickson 2014-06-03 10:31:22 UTC RE: [CAD_CAM_EDM_DRO] Positioning CS Mo 2014-06-03 10:38:42 UTC Re: [CAD_CAM_EDM_DRO] Positioning Jon Elson 2014-06-03 11:02:30 UTC Re: [CAD_CAM_EDM_DRO] Positioning CS Mo 2014-06-03 11:19:27 UTC Re: [CAD_CAM_EDM_DRO] Positioning Tony Smith 2014-06-03 12:11:47 UTC RE: [CAD_CAM_EDM_DRO] Positioning Andy Wander 2014-06-03 12:42:29 UTC RE: [CAD_CAM_EDM_DRO] Positioning Tony Smith 2014-06-03 13:39:23 UTC RE: [CAD_CAM_EDM_DRO] Positioning Randall Wink 2014-06-03 14:48:12 UTC RE: [CAD_CAM_EDM_DRO] Positioning Jon Elson 2014-06-03 19:42:16 UTC Re: [CAD_CAM_EDM_DRO] Positioning William Thomas 2014-06-03 19:55:50 UTC [CAD_CAM_EDM_DRO] Positioning Jon Elson 2014-06-03 21:14:51 UTC Re: [CAD_CAM_EDM_DRO] Positioning William Thomas 2014-06-04 10:30:56 UTC Re: [CAD_CAM_EDM_DRO] Positioning Tony Smith 2014-06-07 10:36:28 UTC RE: [CAD_CAM_EDM_DRO] Positioning Hannu Venermo 2014-06-07 10:52:15 UTC Re: [CAD_CAM_EDM_DRO] Positioning Steve Blackmore 2014-06-08 00:42:15 UTC Re: [CAD_CAM_EDM_DRO] Positioning Hannu Venermo 2014-06-08 23:26:25 UTC Re: [CAD_CAM_EDM_DRO] Positioning David G. LeVine 2014-06-09 10:48:55 UTC Re: [CAD_CAM_EDM_DRO] Positioning Steve Blackmore 2014-06-09 15:51:45 UTC Re: [CAD_CAM_EDM_DRO] Positioning David G. LeVine 2014-06-10 22:11:27 UTC Re: [CAD_CAM_EDM_DRO] Positioning Steve Blackmore 2014-06-10 23:32:12 UTC Re: [CAD_CAM_EDM_DRO] Positioning David G. LeVine 2014-06-12 15:55:17 UTC Re: [CAD_CAM_EDM_DRO] Positioning Steve Blackmore 2014-06-12 23:30:32 UTC Re: [CAD_CAM_EDM_DRO] Positioning Christopher Erickson 2014-06-18 15:43:45 UTC Re: [CAD_CAM_EDM_DRO] Positioning Christopher Erickson 2014-06-18 15:44:17 UTC RE: [CAD_CAM_EDM_DRO] Positioning Tony Smith 2014-06-18 15:44:45 UTC RE: [CAD_CAM_EDM_DRO] Positioning John Anhalt 2014-06-18 15:45:06 UTC Re: [CAD_CAM_EDM_DRO] Positioning ED MAISEY 2014-06-18 15:45:49 UTC Re: [CAD_CAM_EDM_DRO] Positioning Christopher Erickson 2014-06-18 15:45:55 UTC RE: [CAD_CAM_EDM_DRO] Positioning David Mannock 2014-06-18 15:46:04 UTC Re: [CAD_CAM_EDM_DRO] Positioning David G. LeVine 2014-06-20 15:33:34 UTC Re: [CAD_CAM_EDM_DRO] Positioning