#garfield Logs
Aug 28 2021
#garfield Calendar
12:15 AM rue_mohr: OH YES, i'M LIKING THIS CHANGE
12:23 AM rue_mohr: it does't matter where I dissassmeble from ,the labels are always consistant
12:23 AM rue_mohr: oh good luck with the server working after the os upgrade
12:39 AM rue_mohr: 0BC7
12:47 AM rue_mohr: i think this code is crazy
12:48 AM rue_mohr: there are ljumps to ljumps
12:48 AM rue_mohr: I can see the paging is a pain
12:49 AM rue_mohr: there are way too many binary blobs to make it to 0x1000 tonight
12:51 AM rue_mohr: WAIT, i think it does accept hex values
01:07 AM rue_mohr: YEA that would have saved some time too
02:14 AM rue_mohr: I'm starting to think these labels are random crap to keep them from conflicting
02:15 AM rue_mohr: by a few people
02:31 AM rue_mohr: 0F09
02:45 AM rue_mohr: 0FE5
02:58 AM rue_mohr: 103E
02:58 AM rue_mohr: I give up for the right
02:58 AM rue_mohr: night
02:58 AM rue_mohr: found a few changes
03:21 AM rue_bed: gnight
03:53 AM Tom_L: hmm
11:57 AM aandrew: crazy; I think I'd have tried to find or create a basic interpreter from source I could more easily edit
12:08 PM rue_mohr: hey it looks like a casting day!
12:09 PM rue_mohr: I doubt anythuing is as small as this one
12:12 PM aandrew: http://dunkels.com/adam/ubasic/ looks like it might be a fun starting point
12:13 PM aandrew: nevermind, non-interactive
12:13 PM rue_mohr: yea
12:14 PM rue_mohr: stdio.h alone is probably larger than this whole thing
12:14 PM aandrew: http://paladin-t.github.io/my_basic/ is interesting
12:14 PM aandrew: rue_mohr: well yeah, you don't have to have stdio
12:14 PM aandrew: you can emulate that in a tiny way
12:15 PM rue_mohr: I'd really like to see how they did this
12:15 PM rue_mohr: esp the floating point and trig
12:17 PM aandrew: actually that's exactly what I do on every embedded program I write. I have a syscalls.c that has all the stubs brought out and I usually only address _read() and _write() which talks to the UART, maybe sbrk() if I really need allocations but I almost never ever do
12:17 PM aandrew: doing floating point and trig with a cordic routine would work well I think
12:19 PM aandrew: that's something I've wanted to do for a while - cordic in fpga
12:19 PM rue_mohr: ;***************************************************************
12:19 PM rue_mohr: ;
12:19 PM rue_mohr: ; SINE - use taylor series to calculate sin function
12:19 PM rue_mohr: ;
12:19 PM rue_mohr: ;***************************************************************
12:19 PM aandrew: I've only used taylor series to divide by 3 before on pic16
12:19 PM rue_mohr: I'm not even familiar with it
12:20 PM aandrew: doing three phase stuff without a /3 is no bueno
12:20 PM rue_mohr: not by name anyhow
12:21 PM rue_mohr: for 64kbits, there is a LOT in here
12:21 PM aandrew: as usual, my bandwidth for personal projects is almost zero. I am picking up a kind of shitty workbench today though, just something the boys can bang away on without causing trouble
12:22 PM rue_mohr: I should check how big apple basic is tho too
12:22 PM aandrew: 64kbit? like 8kB?
12:22 PM rue_mohr: yes
12:22 PM aandrew: wow
12:22 PM aandrew: I've had a hankering to look at lua for an embeddable scripting language for a while
12:22 PM rue_mohr: not a byte to spare mind you
12:22 PM aandrew: apparently it's quite tiny and quite powerful
12:23 PM rue_mohr: it does seem that the floating point library is almost 50% of the space
12:25 PM rue_mohr: for the fp they use a 6 byte format
12:25 PM rue_mohr: bcd
12:25 PM rue_mohr: with 5 digits + exp
12:28 PM rue_mohr: the orig intel 9 file project was merged into 1 file
12:28 PM rue_mohr: then a bunch of changes and bug fixes were done
12:28 PM rue_mohr: I'm tryin to take a binary and reverse patch the 9 files
12:29 PM rue_mohr: I'd like to see the corrections in the context of the orig authors work
12:29 PM rue_mohr: I figure by the time I'v done that, I'll be familiar with it enough to tear and down and reorganize it
12:29 PM aandrew: that's quite the undertaking
12:30 PM aandrew: probably yes :-)
12:30 PM rue_mohr: I figure 2-3 weeks
12:30 PM rue_mohr: I'm seeing lots of crazy stuff
12:30 PM rue_mohr: that should be able to be cleaned up
12:30 PM rue_mohr: but it looks like it wasn't written with much structure
12:30 PM rue_mohr: kinda just a big lump of code
12:36 PM rue_mohr: it seems that the page limits have them putting things all over the place too
12:37 PM rue_mohr: 0x1FF
12:37 PM rue_mohr: er
12:37 PM rue_mohr: 0x1FFF
12:37 PM rue_mohr: so 1F pages
12:37 PM rue_mohr: 31 pages
01:35 PM rue_mohr: CR1: CJNE R3,#03H,CR11 ;NEED THIS MUCH RAM
01:35 PM rue_mohr: CR11: JC CRST
01:35 PM rue_mohr: just like that
01:35 PM rue_mohr: nothing in between
01:46 PM rue_mohr: ; Now make sure we didn't blow it, by wiping out MT_ALL
02:49 PM rue_shop2: casting 1/4
02:50 PM rue_shop2: might be a race against the rain today
03:12 PM Tom_L: getter get busy!
03:54 PM rue_mohr: 2/4 (maybe it leaked)
03:55 PM rue_mohr: I cant find the other two sprockets
04:52 PM rue_mohr: 4/4 and the propane ran out just as I finished
04:55 PM polprog: good evening
04:56 PM rue_mohr: hi
04:56 PM rue_mohr: I been on a casting marathon
04:56 PM polprog: what were you casting?
04:56 PM rue_mohr: http://ruemohr.org/~ircjunk/tempimage/p1200740.jpg
04:56 PM rue_mohr: http://ruemohr.org/~ircjunk/tempimage/p1200741.jpg
04:56 PM rue_mohr: http://ruemohr.org/~ircjunk/tempimage/p1200742.jpg
04:56 PM rue_mohr: http://ruemohr.org/~ircjunk/tempimage/p1200743.jpg
04:56 PM rue_mohr: http://ruemohr.org/~ircjunk/tempimage/p1200744.jpg
04:56 PM rue_mohr: http://ruemohr.org/~ircjunk/tempimage/p1200745.jpg
04:56 PM rue_mohr: http://ruemohr.org/~ircjunk/tempimage/p1200746.jpg
04:56 PM rue_mohr: http://ruemohr.org/~ircjunk/tempimage/p1200747.jpg
04:56 PM rue_mohr: casting hubs onto bike sprockets
04:56 PM polprog: ooo
05:11 PM aandrew: shprockets
05:12 PM Tom_L: ewwww, they're all gooped up with aluminum in the middle!
05:39 PM rue_shop3: ok
05:39 PM rue_shop3: well
05:40 PM rue_shop3: not sure what else is on my weekend list
05:40 PM rue_shop3: lunch would be good
05:44 PM rue_shop3: I have to make a template for the XY intersection of the small mill
05:45 PM rue_shop3: not really designed it yet
05:47 PM polprog: i should learn z80 assembly
05:48 PM polprog: try to "port" the memory mapper program to z80
05:50 PM rue_mohr: memory mapper?
05:51 PM polprog: the one that runs thru the entire memory space while I probe CS lines with the mso
05:51 PM rue_mohr: oh
06:18 PM Tom_L: will the aluminum pop out of the spokes? or is it meant to be permanent?
06:18 PM rue_mohr: address = 0
06:18 PM Tom_L: and leave the center hub
06:18 PM rue_mohr: oh its in there good
06:18 PM Tom_L: hah
06:18 PM Tom_L: not movin ehh?
06:18 PM rue_mohr: I'll mashine it up and check, but yea
06:19 PM rue_mohr: the middle of the sprocket isn't round, its castelated
06:19 PM rue_mohr: tho I feel I could have made it larger to grab more of the spokes
06:20 PM rue_mohr: address = 0
06:20 PM rue_mohr: while (interruptFlag != 1) {
06:20 PM rue_mohr: readbyte (address)
06:21 PM rue_mohr: address++
06:21 PM rue_mohr: }
06:21 PM rue_mohr: address --;
06:21 PM rue_mohr: printf (hit line at address: address)
06:21 PM rue_mohr: goto while
06:21 PM rue_mohr: ]:)
06:23 PM Tom_L: loop
06:24 PM rue_mohr: cant write code linear :/
06:25 PM rue_mohr: only recursive descent
06:25 PM Tom_L: try it on a fpga :)
06:25 PM polprog: https://twitter.com/polprogpl/status/1431755817838071810
06:27 PM rue_mohr: k
06:33 PM rue_mohr: oh cs isn't chip select
06:34 PM rue_mohr: your not reversing the board anymore
06:34 PM Tom_L: heh
06:34 PM rue_mohr: I get it now
06:34 PM polprog: :P
06:34 PM polprog: im getting a hot plate for SMD soldering
06:34 PM rue_mohr: cant imagine I'm easy to keep up with either
06:34 PM Tom_L: nice
06:34 PM rue_mohr: how hot?
06:34 PM Tom_L: you know what else works?
06:34 PM Tom_L: clothes iron
06:34 PM polprog: i knew yod say that
06:34 PM polprog: :P
06:35 PM polprog: rue_mohr: adjustable with PID :D
06:35 PM polprog: 300C i think?
06:35 PM Tom_L: you know what else works?
06:35 PM rue_mohr: cause if you are ok with some work on it maybe you could just use a clothes iron
06:35 PM Tom_L: toaster oven
06:35 PM polprog: Tom_L: electric stove
06:35 PM Tom_L: you know who has a spare toaster oven?
06:35 PM polprog: its pretty affordable
06:35 PM polprog: you
06:35 PM rue_mohr: oh pallette
06:35 PM rue_mohr: damnit
06:35 PM * Tom_L tries to throw it a long long ways to polprog
06:35 PM rue_mohr: my life is too busy for me
06:35 PM polprog: i have a grill style toaster but my mom wont let me use it for reflow
06:35 PM rue_mohr: its gonna throw me off and go down the road on its own
06:35 PM Tom_L: you'd better catch up with yourself
06:36 PM Tom_L: polprog, you wouldn't wanna use it for food afterward anyway
06:36 PM polprog: ikr
06:36 PM rue_mohr: I got a grill FOR that
06:36 PM rue_mohr: I wonder where it is
06:36 PM polprog: but isecured a BOM for the USB-C project
06:37 PM Tom_L: good
06:37 PM polprog: except that the actual USB-C sockets come from aliexpress in a month >_>
06:37 PM rue_mohr: did you get the parts
06:37 PM polprog: yeah
06:37 PM rue_mohr: cool
06:37 PM polprog: luckily the older project's boards come this week and i have parts for that already
06:37 PM polprog: so ill be reflowing that
06:37 PM polprog: now im looking for a cheap stencil maker
06:37 PM polprog: need something fast, so local
06:37 PM rue_mohr: why
06:38 PM polprog: idk, if a stencil is $5 then i might as well order one
06:38 PM rue_mohr: what re you making?
06:38 PM polprog: a small stm32 with two IR transceivers
06:38 PM rue_mohr: hmm
06:38 PM rue_mohr: I have to get back to the yard stuff
06:43 PM Tom_L: polprog, i've used these guys: https://ohararp.com/stencils/
06:43 PM Tom_L: http://tom-itx.no-ip.biz:81/~webpage/boards/USBTiny_Mkii/Stencils/stencil_form4.jpg
06:43 PM Tom_L: that makes it alot easier
06:44 PM Tom_L: http://tom-itx.no-ip.biz:81/~webpage/boards/USBTiny_Mkii/Stencils/stencil_form3.jpg
06:44 PM polprog: clever
06:45 PM Tom_L: you need something if you're doing alot
06:45 PM Tom_L: i did several hundred of those programmers
06:45 PM polprog: ill get to that amount hopefully
06:56 PM rue_shop3: I"m gonna end up needing a shed for my casting boxes
06:56 PM rue_shop3: cound is getting silly
06:58 PM Tom_L: :)
06:59 PM rue_mohr: count
09:09 PM rue_shop3: oof
09:09 PM rue_shop3: yard work
09:09 PM rue_shop3: planted about 20 huckleberry bushz
09:09 PM rue_shop3: didn't know we'd gathered so many
09:09 PM rue_shop3: I'll save the willow trees till tommorow
09:10 PM Tom_L: don't those spread like fire?
09:15 PM rue_mohr: na
10:35 PM rue_mohr: 13-bit Timer (8048 compatible)
10:35 PM rue_mohr: why does the 8051 datasheet reffer to the 8048
10:38 PM Tom_L: In 1980, Intel introduced the successor to 8048, the 8051. Intel made sure that the transition from the already successful model will be as smooth as possible. Architecturally, the 8051 is an extension to 8048. Almost every feature and resource of 8048 is present in 8051 in same or superior form.
10:38 PM rue_mohr: oh
10:39 PM rue_mohr: ooh
10:39 PM rue_mohr: well
10:39 PM rue_mohr: that explains the pain-in-the-ass factor with 8051
10:39 PM Tom_L: haha
10:40 PM rue_mohr: :)
10:40 PM Tom_L: The MCS-48 microcontroller series, Intel's first microcontroller, was originally released in 1976. Its first members were 8048, 8035 and 8748. The 8048 is probably the most prominent member of the family. Initially, this family was produced using NMOS (n-type metal–oxide–semiconductor) technology. In the early 1980s, it became available in CMOS technology. It was still manufactured into the 1990s to support older designs that still u
10:40 PM Tom_L: sed it.
10:40 PM rue_mohr: keyboards
10:41 PM rue_mohr: I have lots of keybaord 8048s
10:41 PM Tom_L: https://en.wikipedia.org/wiki/Intel_MCS-48
10:41 PM Tom_L: under variants..
10:41 PM rue_mohr: oh I know
10:41 PM rue_mohr: huh
10:42 PM rue_mohr: the "call with short address spec" is 11 address bits (+-1024)
10:42 PM rue_mohr: The subroutine called must therefore start within the same 2k block of the
10:42 PM rue_mohr: program memory as the first byte of the instruction following ACALL
10:43 PM rue_mohr: ""
10:43 PM rue_mohr: so, its not page-pages
10:44 PM rue_mohr: "
10:44 PM rue_mohr: AJMP transfers program execution to the indicated address, which is formed at run-time by concatenating
10:44 PM rue_mohr: the high-order five bits of the PC (after incrementing the PC twice), opcode bits 7-5, and the second byte
10:44 PM rue_mohr: of the instruction. The destination must therefore be within the same 2k block of program memory as the
10:44 PM rue_mohr: first byte of the instruction following AJMP
10:44 PM rue_mohr: "
10:45 PM rue_mohr: there is a lot of code dancing around trying to get to where it wants to
10:45 PM rue_mohr: you would think everyone could stay within 2k of who they need
10:47 PM rue_mohr: INC DPTR
10:47 PM rue_mohr: there is a funny cloud around the fact that there is no decrement dptr
10:48 PM rue_mohr: it seems to be a wild topic
10:49 PM rue_mohr: I dont really want to get cozy with 8051 assembler
10:51 PM rue_mohr: this basic code will come apart in layers
10:52 PM rue_mohr: as per 1980 most of this code is just a huge blob in one file
10:52 PM rue_mohr: write-only style
10:53 PM rue_mohr: the floating point library is 1617 lines of code
10:53 PM Tom_L: they were learning the basics back then
10:54 PM rue_mohr: :)
10:54 PM rue_mohr: we just dont do code the same today
10:55 PM Tom_L: IBM introduced the pc on my birthday iirc
10:55 PM rue_mohr: the main basic code is 4715 lines
10:55 PM rue_mohr: in one file
10:55 PM rue_mohr: I kinda feel like working on electronics instead of coding
10:55 PM rue_mohr: got nothing lined up
10:55 PM rue_mohr: that I know of
10:56 PM Tom_L: fpga stoplight cerario
10:56 PM rue_mohr: this basic thing is a great reverse engineering exersize
10:56 PM rue_mohr: heh
10:56 PM Tom_L: with turn lanes
10:56 PM rue_mohr: how about 7 floor elevator control?
10:56 PM Tom_L: even better
10:56 PM rue_mohr: glad I got those castings done today
10:57 PM Tom_L: yup
10:57 PM rue_mohr: I need to work out the xy intersection peice for the small cnc
10:57 PM Tom_L: how do you plan to hold them to turn the centers round?
10:57 PM rue_mohr: a back to back rectangular ways thing
10:57 PM rue_mohr: by the gear
10:57 PM rue_mohr: light cuts :)
10:58 PM Tom_L: guess you'll find out how well it stuck
10:58 PM rue_mohr: :)
10:58 PM rue_mohr: I was wondering what the shrinkage is today
10:58 PM rue_mohr: thinking I should cast a test peice
10:58 PM rue_mohr: somehow
10:59 PM Tom_L: did you find the right chems to clean the aluminum?
10:59 PM Tom_L: what is it.. boron?
10:59 PM rue_mohr: I got the sodium free salt
10:59 PM rue_mohr: borax is flux
10:59 PM Tom_L: ahh yeah
11:00 PM Tom_L: i got some of that
11:00 PM Tom_L: for ant killer :)
11:00 PM rue_mohr: :)
11:00 PM Tom_L: don't you add some of that at the end?
11:00 PM rue_mohr: this inter-xy casting is ... complex
11:00 PM rue_mohr: usually
11:00 PM rue_mohr: tho I think its whats eating my pot
11:01 PM Tom_L: the plate for xy?
11:01 PM Tom_L: mine looks like a shotgun got to it
11:01 PM rue_mohr: its an inter box ways
11:01 PM Tom_L: oh
11:01 PM rue_mohr: for the x box-ways and the y box-ways
11:01 PM Tom_L: same size?
11:01 PM rue_mohr: yes
11:02 PM rue_mohr: so its square
11:04 PM Tom_L: where did cpm originate?
11:04 PM Tom_L: i missed out on that venture
11:04 PM rue_mohr: oof
11:04 PM rue_mohr: dos is based on it...
11:05 PM Tom_L: i thought so
11:05 PM rue_mohr: msdos
11:05 PM Tom_L: i thought i had a dos 1.1 disk here somewhere
11:05 PM rue_mohr: ok, I have a sketch of what I "need"
11:05 PM Tom_L: let's see
11:05 PM rue_mohr: heh
11:06 PM Tom_L: what are you gonna use for bearing surfaces?
11:07 PM rue_mohr: cold rolled to aluminum
11:07 PM rue_mohr: dont think I can cough up brass
11:08 PM rue_mohr: http://ruemohr.org/~ircjunk/tempimage/p1200752.jpg
11:08 PM rue_mohr: the blue is the peice I cast
11:08 PM rue_mohr: the square yellow is cold rolled flat bar
11:08 PM rue_mohr: the round yellow is a lead screw
11:08 PM Tom_L: i was thinking it would wrap around the base
11:08 PM rue_mohr: the plate is the bearing
11:09 PM Tom_L: like a [____] upside down
11:09 PM rue_mohr: oh and put the .... hu?
11:09 PM rue_mohr: oh, that is
11:09 PM Tom_L: so your base is backward from what i was thinking
11:09 PM rue_mohr: I cant have the plate travel
11:09 PM rue_mohr: too long
11:10 PM Tom_L: you won't get alot of travel
11:10 PM Tom_L: you get about half what you think you'll get
11:10 PM rue_mohr: this way I should get about ~8"
11:10 PM rue_mohr: the juction is about 5"
11:10 PM rue_mohr: the ways are about 18"
11:10 PM Tom_L: i wanted mine rigid so i spaced the blocks a little further apart on the plate
11:11 PM Tom_L: but in doing so i lose travel
11:11 PM rue_mohr: I'm using 1 plate for its parallelism
11:11 PM Tom_L: that's kinda short
11:11 PM rue_mohr: it'll come out like the sherline
11:11 PM Tom_L: you don't want more than that?
11:11 PM rue_mohr: but a bit larger
11:12 PM rue_mohr: it'll be heavier (and mine)
11:12 PM rue_mohr: the sherline is on loan
11:12 PM Tom_L: i know
11:12 PM Tom_L: i got parts of one in a box
11:12 PM rue_mohr: :)
11:12 PM rue_mohr: and I havn't worked out how to move a palette yet
11:12 PM rue_mohr: }:|
11:13 PM rue_mohr: I got a guy with a dropoff over the border I need to talk to again
11:13 PM Tom_L: i wouldn't have a clue who to contact for a truck to haul it
11:13 PM rue_mohr: no I'm trying to find a way to set it all up
11:13 PM Tom_L: seems more than i may be capable of doing
11:14 PM Tom_L: no room for one
11:14 PM Tom_L: to load the pallet etc
11:14 PM rue_mohr: I'd like to propose someone drop off a pallette you can just put stuff on and they can pick it up and take it away
11:14 PM rue_mohr: powergate and all
11:14 PM rue_mohr: hmm
11:14 PM rue_mohr: there is a way
11:15 PM rue_mohr: I'm sure of it!
11:15 PM Tom_L: may not be cost effective
11:15 PM rue_mohr: that much clad
11:15 PM rue_mohr: yea, it is!
11:15 PM Tom_L: getting it all to stay still on a skid may be a trick
11:16 PM rue_mohr: how much bearing surface do you think I should have on the 4" wide cold rolled?
11:16 PM rue_mohr: 1/2"?
11:16 PM Tom_L: 4" pad?
11:16 PM Tom_L: should be enough i suppose
11:16 PM rue_mohr: the box ways are flatbar, 4" x 1/4"
11:16 PM Tom_L: those gibs on the sherline are small
11:16 PM rue_mohr: need to know how much to get the [____] to grab it by
11:16 PM rue_mohr: yea
11:17 PM rue_mohr: but its also dovetail
11:17 PM Tom_L: make one side adjustable
11:17 PM rue_mohr: and most of the bearing is the two surfaces
11:17 PM rue_mohr: yea, I'll need gibs
11:18 PM Tom_L: the yellow is the steel plate mounted to the top?
11:18 PM rue_mohr: I suppose it'll be a bit like those calipers
11:18 PM rue_mohr: yes
11:18 PM Tom_L: i think i see it now
11:18 PM Tom_L: sorta
11:18 PM rue_mohr: I'll mill in the slots for it to the casting
11:19 PM Tom_L: as long as you got a plan :)
11:19 PM rue_mohr: a russian could make this out of a toaster in a day, and here I am
11:20 PM rue_mohr: I mean, someone in india could too, but the quality of the russian one would be much better
11:21 PM rue_mohr: so, what size allthread for the drive
11:21 PM rue_mohr: maybe 5/16"
11:21 PM Tom_L: i ended up with 17.75 X, 13 Y and 7" Z
11:21 PM rue_mohr: I can change it up for 8mm ballscrew if I ever find any for a good price
11:21 PM rue_mohr: yes, I'm jellous
11:22 PM Tom_L: it was less than i had thought at first
11:22 PM Tom_L: didn't account entirely for the XY plate
11:22 PM rue_mohr: its easy to blow those margine
11:22 PM rue_mohr: its easy to blow those margins
11:23 PM Tom_L: and i certainly wish i had more Z
11:23 PM rue_mohr: really?
11:23 PM Tom_L: after i'd already cut one of the ballscrews
11:23 PM rue_mohr: 7" is pretty good
11:23 PM Tom_L: i _could_ have had more
11:23 PM rue_mohr: hmmm, should I 3d print the template?
11:24 PM Tom_L: for the plate?
11:24 PM Tom_L: add a vise and you lose 4" right there
11:24 PM Tom_L: try to drill and you gotta add a chuck in the mix
11:24 PM Tom_L: that's at least 2"
11:25 PM Tom_L: so you see it gets eaten up quick
11:25 PM Tom_L: well, the vise isn't quite 4" tall
11:25 PM Tom_L: mayb 2.5 - 3
11:25 PM Tom_L: but still...
11:25 PM rue_mohr: hmm
11:26 PM rue_mohr: I think I should be ad-hocking this more
11:26 PM Tom_L: with the rotary head, i can't tilt it up horizontal because it won't fit under the spindle
11:26 PM Tom_L: so i gotta use it vertical always
11:26 PM Tom_L: err vise versa...
11:26 PM rue_mohr: I could bang this template off in wood
11:26 PM Tom_L: thinking work planes...
11:27 PM Tom_L: may as well save the plastic
11:30 PM rue_mohr: I can use wood for the template
11:30 PM rue_mohr: faster to make
11:30 PM rue_mohr: so the whole template is 2.5" thick
11:30 PM rue_mohr: 5x5
11:35 PM rue_mohr: ~1:1 this looks crazy
11:36 PM Tom_L: http://tom-itx.no-ip.biz:81/~webpage/cnc/Mill_Steel/Z_Axis_plate.jpg
11:36 PM Tom_L: that was my Z
11:37 PM rue_mohr: yep, plate makes it easier
11:37 PM Tom_L: http://tom-itx.no-ip.biz:81/~webpage/cnc/Mill_Steel/Y_Axis_Plate3.jpg
11:37 PM Tom_L: still pretty busy
11:37 PM Tom_L: they all gotta miss each other
11:38 PM Tom_L: http://tom-itx.no-ip.biz:81/~webpage/cnc/Mill_Steel/Y_Axis_Plate1.jpg
11:38 PM Tom_L: that's probably 5/8" plate
11:38 PM Tom_L: not sure really
11:41 PM rue_mohr: hmm
11:42 PM Tom_L: http://tom-itx.no-ip.biz:81/~webpage/cnc/Mill_Steel/StepperMount2.jpg
11:42 PM rue_mohr: this XY arrangement adds 1.5" of z
11:42 PM Tom_L: that was fun to make
11:42 PM rue_mohr: I think alot about making things with just lots of little bits welded togethor
11:43 PM Tom_L: gotta watch warpage
11:43 PM Tom_L: i learned that the hard way
11:45 PM Tom_L: i should get rid of alot of those pics. some are from the first rev that i never built
11:46 PM rue_mohr: ok, some time on the tablesaw tommmorow should have this
11:47 PM rue_mohr: I think this should be split tho
11:48 PM rue_mohr: then the last proposed casting is the Z slider
11:48 PM rue_mohr: /bridtge
11:48 PM rue_mohr: /bridge
11:49 PM rue_mohr: not sure how far I should hang out off the Z axis
11:49 PM rue_mohr: I suppose about 4" eh?
11:49 PM Tom_L: i redid mine and made it longer
11:50 PM rue_mohr: oh
11:50 PM Tom_L: http://tom-itx.no-ip.biz:81/~webpage/cnc/Mill_Steel/Z_Column_Standoff1.jpg
11:50 PM rue_mohr: I only did 12" on the sider
11:50 PM rue_mohr: so 7" travel
11:51 PM Tom_L: that's 4" box
11:51 PM rue_mohr: hmm
11:51 PM rue_mohr: 7" is larger than the sherline
11:51 PM rue_mohr: I can make X almost whatever I want
11:52 PM rue_mohr: 7" travel implies 3.5" overhang
11:52 PM Tom_L: i never really had a flat work table to work off of
11:52 PM Tom_L: had to constantly use the steel plate and aluminum table for flat work space
11:52 PM rue_mohr: hmm, +- spindle etc
11:52 PM rue_mohr: it was probably enough
11:53 PM Tom_L: go at least 2" more than you think you need
11:53 PM rue_mohr: how did you last tramming go?
11:53 PM Tom_L: i didn't do a full tram
11:53 PM Tom_L: but it improved it
11:53 PM rue_mohr: oh, I thought I heard you digressing thru it
11:53 PM Tom_L: i found out the side of the vise i was using wasn't square
11:53 PM rue_mohr: oh
11:54 PM Tom_L: pissed me off after i'd spent alot of time on that
11:54 PM Tom_L: the other side was alot better
11:54 PM Tom_L: so i made the rear jaw parallel to X and used the vise to check Y
11:55 PM Tom_L: that's when i twisted the z column some
11:55 PM rue_shop2: the sherline is 9"x5.5"
11:55 PM Tom_L: 5.5Y?
11:55 PM rue_shop2: I can probably manage 10x7
11:56 PM rue_shop2: yea
11:56 PM rue_shop2: so the ruler on it implies
11:56 PM Tom_L: iirc i had 7Y on the sherline
11:56 PM Tom_L: with that arm extension
11:57 PM rue_shop2: the z was bumped out on this
11:57 PM rue_shop2: its at about 3.5"
11:57 PM Tom_L: i got an extra riser for Z that i used some
11:57 PM rue_shop2: spindle - ways
11:58 PM Tom_L: i had to be careful because the vise would hit the Z column
11:58 PM Tom_L: i always used it with one of those aluminum work plates
11:58 PM Tom_L: gave me more table room