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Search: Posts Made By: orotemo
Forum: Driving Mechanisms: Rack/pinion, gears, screws, belts & chains Wed 20 January 2010, 06:31
Replies: 37
Views: 46,368
Posted By orotemo
sailfl, The motors are awesome, its' the gear,...

sailfl, The motors are awesome, its' the gear, and for all I know, the manufacturer is fine with 1 degree of freedom on this gear.

The set screws are also good, tight in place.

thanks for the...
Forum: Driving Mechanisms: Rack/pinion, gears, screws, belts & chains Tue 19 January 2010, 22:37
Replies: 37
Views: 46,368
Posted By orotemo
lumberjack jeff - I didn't input any backlash...

lumberjack jeff - I didn't input any backlash into the controller - I just make sure most of my cuts are done same direction, that way the backlash behaves the same for every cut, so say I'd like to...
Forum: Driving Mechanisms: Rack/pinion, gears, screws, belts & chains Tue 19 January 2010, 13:17
Replies: 449
Views: 465,205
Posted By orotemo
would you say plain timing belt & pulley setup...

would you say plain timing belt & pulley setup will do the trick and solve the backlash issues? this is what remains unknown to me, because of all the discussions I already read, I haven't a firm...
Forum: Driving Mechanisms: Rack/pinion, gears, screws, belts & chains Tue 19 January 2010, 12:09
Replies: 37
Views: 46,368
Posted By orotemo
:) nice closure?

Copied from another thread:

. . . . . . .

I have backlash. no lost steps, always manage to get back to the exact same locations, only that there is a 'play'. I grab the gantry in my right...
Forum: Driving Mechanisms: Rack/pinion, gears, screws, belts & chains Tue 19 January 2010, 12:09
Replies: 449
Views: 465,205
Posted By orotemo
:) nice closure?

You must admit it is funny in some way (the shared IP of Jimbo & Chopper). shows enthusiasm :).

Gerald, as probably the person who was involved in every debate on this forum, and quite a few on...
Forum: Driving Mechanisms: Rack/pinion, gears, screws, belts & chains Tue 19 January 2010, 08:24
Replies: 449
Views: 465,205
Posted By orotemo
Is there a 'zero backlash' timing belt&pulley

Chopper (or anyone else who knows)

Is there such a thing as 'zero backlash' timing belt&pulley?
I saw you use 0.2'' pitch, which translates to about 5mm. Is it plain timing belt & pulley? clearly...
Forum: CNC motion control software Thu 31 December 2009, 09:05
Replies: 62
Views: 71,132
Posted By orotemo
EMC limits and homing

Thanks Brad, that was a brilliant idea. geniusity at its best :). really, it didn't occur to me I can do that, but it works great - hardware-wise, the NC connections of my relays function as the home...
Forum: CNC motion control software Tue 29 December 2009, 08:02
Replies: 62
Views: 71,132
Posted By orotemo
EMC homing

Brad, this one is for you:

I use the pmdx 122, how do I make the homing work when all I have is onee pin for all limit switches and home?

11 - start
12 - pause
13 - touchoff plate (auto Z...
Forum: CNC motion control software Sun 27 December 2009, 10:48
Replies: 62
Views: 71,132
Posted By orotemo
EMC slaving

Brad: Thank you for the tip, that is exactly where I am. I've made the motors move, not yet slaved them, using the stepper gantry as a starting point.

Yuri: Man, that is fine you didn't get my...
Forum: CNC motion control software Sat 26 December 2009, 22:44
Replies: 62
Views: 71,132
Posted By orotemo
EMC slave axis

Hello everybody, and merry Christmas.

I guess this question goes to Yuri, but if anyone knows....

Running a wide gantry is done here with two motors on the X (mach users use a as the slaved...
Forum: 10. Base Table Sat 24 January 2009, 13:32
Replies: 32
Views: 44,656
Posted By orotemo
Clearvue holddown

So, if I get it right, J.R. and others say that if you machine large parts, just plugging in some of the suction from a clearvue cyclone (4HP) will suffice as a vacuum holddown (or any other powerful...
Forum: Graphics & CAD Fri 22 August 2008, 07:36
Replies: 115
Views: 135,795
Posted By orotemo
Well Greg, been a month since you have purchased...

Well Greg, been a month since you have purchased the rhino+rhinoart, how is it going? is it simple and time saving to use this combo? what tasks don't you do with these two?

I'm also after some...
Forum: 60. Wiring & Cable Management Mon 21 July 2008, 08:30
Replies: 221
Views: 220,062
Posted By orotemo
I will probably change my order to a 12 core...

I will probably change my order to a 12 core cable then. Thanks a lot guys. I'm a quick learner (when people explain to me realllllyy slowwww :)).
Forum: 60. Wiring & Cable Management Sun 20 July 2008, 02:24
Replies: 221
Views: 220,062
Posted By orotemo
Regarding the pause and resume: Why seven...

Regarding the pause and resume:

Why seven core (mentioned on page one of this discussion) cable for the pause/resume/E-stop ? if I get it right, a MM builder will only need the 5V, GND E-stop,...
Forum: Rails & Rollers Thu 10 July 2008, 16:34
Replies: 8
Views: 16,782
Posted By orotemo
Thanks Gerald, shimming it is. I'll use 15...

Thanks Gerald, shimming it is.

I'll use 15 metric. Here in Israel we use metric, although you could find inches for just about anything, but from what I hear, there is a tendency now to go metric...
Forum: Rails & Rollers Thu 10 July 2008, 10:08
Replies: 8
Views: 16,782
Posted By orotemo
Common problems?

Common problems, or is it just me?

Started building my MM, Got the laser parts, beautiful work done on them (only it cost over 1000 USD :rolleyes:), all happy.

I'll build a 6X2.5 meter MM ( I...
Forum: Rails & Rollers Mon 30 June 2008, 08:15
Replies: 39
Views: 42,566
Posted By orotemo
Just watched the Brazil video, This is one...

Just watched the Brazil video,
This is one sound technique to grind rails. We need some impressions from the cutter, if he could make the measurements in several places along the rail and post it,...
Forum: 40. Z-Slide Mon 09 June 2008, 21:07
Replies: 25
Views: 37,505
Posted By orotemo
First things first: didn't mean to annoy anybody,...

First things first: didn't mean to annoy anybody, the word horrible was supposed to be written as "horrible", not as a truly horrible... - you get me :).

David - thanks for the factors list. I'll...
Forum: 40. Z-Slide Mon 09 June 2008, 13:01
Replies: 25
Views: 37,505
Posted By orotemo
Possible solution to flex in long Z axis?

Hi all,

Just a thought: Looking at the Z axis assembly, and reading all them posts speaking of the horrible flex induced, I decided to take a llok at the whole setup.

It seems to me that the...
Forum: Construction started, but not cutting yet Thu 05 June 2008, 12:36
Replies: 14
Views: 13,025
Posted By orotemo
Thanks so much Gerald. I was afraid you'll send...

Thanks so much Gerald. I was afraid you'll send me on a goose chase for some unknown steel, some holy grail :D.
everyday you learn something new.

Cheers.
Forum: Construction started, but not cutting yet Thu 05 June 2008, 08:31
Replies: 14
Views: 13,025
Posted By orotemo
Hi kim, thanks for the clarification. This...

Hi kim,

thanks for the clarification. This boils down to the following question:
What if all the parts for the MechMate will be cut and shaped from mild steel??

Surely it take some of the...
Forum: Construction started, but not cutting yet Thu 05 June 2008, 07:52
Replies: 14
Views: 13,025
Posted By orotemo
Steel 300MPa, mild, 25 Rockwell C ...

Hi all,
Many many thanks to you all for the info, especially Gerald. I'm not a fan of forums, only this one really strikes me as a great one. you usually have to go through piles of words before you...
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