#emc-devel | Logs for 2006-08-24

[00:09:06] <jepler> hm, it takes a fair bit of time to build the docs... much more than doubles the build time, I think
[00:09:11] <jepler> especially now that it builds html too
[00:13:38] <jepler> 2:10 real to build the docs on a 1.5GHz machine
[00:14:01] <jepler> uh oh, and a second run of 'make' is making more stuff...
[00:14:13] <jepler> that'll never do...
[02:49:47] <jepler_> jepler_ is now known as jepler
[02:50:52] <jmkasunich> configure: WARNING: no latex2html, documentation will not be built
[02:51:00] <jmkasunich> what package is that part of?
[02:56:32] <cradek> 'apt-file search latex2html'
[02:57:08] <jmkasunich> apt-file: command not found
[02:57:16] <cradek> 'apt-get install apt-file'
[02:57:17] <cradek> heh
[02:57:19] <cradek> hi jmk
[02:57:23] <cradek> latex2html: usr/bin/latex2html
[02:57:38] <cradek> in this case looks like the package name is more obvious than you'd expect
[02:57:51] <jmkasunich> I believe that package is latex2html, but its not in one of the reps I have selected
[02:58:09] <jmkasunich> is it in multiverse maybe?
[02:58:10] <cradek> Filename: pool/multiverse/l/latex2html/latex2html_2002-2-1-20050114-4_all.deb
[02:58:13] <cradek> yeah
[02:58:21] <jmkasunich> that explains it
[02:58:48] <cradek> I think it's great we're getting html docs
[02:59:13] <jmkasunich> yeah
[02:59:38] <jmkasunich> I need a bigger bench
[02:59:43] <jmkasunich> (or less crap on the bench I have)
[02:59:55] <cradek> nah you need another bench
[03:00:02] <jmkasunich> need to use the surface plate, but no place to put it
[03:00:55] <cradek> ah
[03:01:05] <cradek> a surface plate is sort of like a bench...
[03:01:08] <jmkasunich> I am _not_ gonna hunch over and use it on the floor (where it is sitting right now)
[03:01:09] <cradek> just put legs on it :-)
[03:01:37] <jmkasunich> hmm, if I move the crap thats piled on the computer sitting next to the bench, the plate would sit on that
[03:01:53] <cradek> pickup tailgate? I've been known to use that as a workbench
[03:01:55] <jmkasunich> tower case ~= legs for surface plate?
[03:02:01] <cradek> sure thing
[03:02:02] <jmkasunich> I'm in the basement, not the garage
[03:02:06] <cradek> ah
[03:04:01] <jmkasunich> I decided something yesterday - I'm not building any more of these jigs, at any price
[03:04:30] <cradek> I see the fun is sure gone for you, so that's a good decision
[03:04:49] <jmkasunich> dang! I forgot how heavy 12" x 18" x 4" granite is
[03:04:56] <cradek> yeah I was wondering about that
[03:05:08] <cradek> maybe the floor's not so bad
[03:05:33] <jmkasunich> its up there now
[03:15:33] <jmkasunich> what a pain
[03:15:43] <jmkasunich> measuring center-to-center distance of worm and gear
[03:16:25] <cradek> how do you know when they're meshed right to measure?
[03:16:51] <jmkasunich> worm is sitting in a vblock
[03:16:58] <jmkasunich> gear is sitting on top
[03:17:36] <jmkasunich> measure top of gear with height gage, subtract half of gear diameter to get gear centerline height
[03:17:42] <cradek> oh so they're fully meshed, you don't have to carefully pick a depth like with involute gears
[03:17:46] <jmkasunich> them measure top of worm, subtract half of worm diameter
[03:17:54] <jmkasunich> right
[03:18:13] <jmkasunich> the gear was cut with a hob that is made of the same threaded rod I used for the worm
[03:18:18] <jmkasunich> so they mesh perfectly
[03:18:20] <cradek> ah cool
[03:18:44] <jmkasunich> I'll make the hole in the housing for the worm about 0.001-0.002 away from "perfect", better a little slop than binding
[03:20:07] <jmkasunich> I also have to measure the other dimension, parallel to the gear shaft
[03:20:24] <jmkasunich> because the hobbed worm teeth aren't perfectly centered in the gear blank
[03:20:35] <jmkasunich> not sure I remember how to do that
[03:21:59] <cradek> oh I see, they're wherever you hobbed them
[03:22:09] <jmkasunich> right
[03:22:18] <jmkasunich> close, but not perfect
[03:22:31] <jmkasunich> so I gotta position the worm hole in two dimensions
[03:22:34] <cradek> is the worm narrower than the gear? you could put both sides of the gear on the surface plate and measure up to the worm's shaft, then do some math
[03:22:49] <jmkasunich> gear is wider
[03:22:59] <jmkasunich> and permanently attached to a shaft that sticks out both ends
[03:23:06] <cradek> oh
[03:23:15] <cradek> that can stick off the edge of the plate
[03:23:40] <jmkasunich> I seem to recall using small clamps to clamp the worm meshed to the gear
[03:23:53] <jmkasunich> then measured the step from side of gear to OD of worm
[03:25:18] <jmkasunich> I also forgot how much I like reading vernier scales
[03:25:35] <cradek> I think they're cool
[03:25:46] <jmkasunich> yeah, they are
[03:25:59] <cradek> a "clever hack"
[03:26:02] <jmkasunich> but no fun when you need a magnifier to see them
[03:27:39] <jmkasunich> at least the height gage can be locked, then picked up to read it
[03:28:28] <jmkasunich> I'd hate to have a vernier caliper (nice to have as a piece of fine craftsmanship, but not as an everyday tool)
[03:30:02] <cradek> yeah a dial is nice.
[03:36:51] <jmkasunich> well I didn't do too bad on the gears
[03:37:01] <cradek> pretty well centered?
[03:37:10] <jmkasunich> design center-to-center = 1.154, my two gears are 1.158 and 1.1575
[03:37:33] <cradek> nice
[03:37:40] <jmkasunich> I haven't done the other measurement yet
[03:37:47] <jmkasunich> (centering of worm in gear blank)
[03:54:28] <jmkasunich> one gear hobbed 0.012 from center of blank, the other 0.008