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Forum: Miscellaneous / General / Whatever / Catchall Wed 20 June 2012, 20:14
Replies: 308
Views: 302,912
Posted By Richards
Gerald, I agree that running some tests with...

Gerald,

I agree that running some tests with a good quality encoder and the other proper hardware and software devices would show whether or not the stepper driver was filtering out the resonance,...
Forum: Miscellaneous / General / Whatever / Catchall Wed 20 June 2012, 11:23
Replies: 308
Views: 302,912
Posted By Richards
Kim, Yes, it's always best to buy as much...

Kim,

Yes, it's always best to buy as much quality as possible.

I know nothing about your first set of drives or of the drives that you're using now; but, I have had the same experience with...
Forum: Miscellaneous / General / Whatever / Catchall Mon 18 June 2012, 16:30
Replies: 308
Views: 302,912
Posted By Richards
Whether we use a Geckodrive that has 10:1...

Whether we use a Geckodrive that has 10:1 microstepping or whether we use the driver recommended by the stepper drive manufacturer (and get 200 steps per revolution), we really have very little...
Forum: Miscellaneous / General / Whatever / Catchall Sun 17 June 2012, 11:12
Replies: 308
Views: 302,912
Posted By Richards
Nils, I don't think that there is much that...

Nils,

I don't think that there is much that can be done with either the software or the motors.

We use stepper motors because they are accurate and inexpensive. One of their inherent problems...
Forum: Miscellaneous / General / Whatever / Catchall Sun 17 June 2012, 09:36
Replies: 308
Views: 302,912
Posted By Richards
Nils, I've got egg on my face. The Circle...

Nils,

I've got egg on my face. The Circle Segment Resolution is part of Shopbot's SB3 program. I was certain that V-Carve Pro also had a parameter setting, but my old mind failed me, proving,...
Forum: Miscellaneous / General / Whatever / Catchall Sat 16 June 2012, 12:41
Replies: 308
Views: 302,912
Posted By Richards
Nils, I don't know. I'm 100 miles from my...

Nils,

I don't know. I'm 100 miles from my home so I can't check things from here. I'll post when I have a chance to look at the V-Carve settings.
Forum: Miscellaneous / General / Whatever / Catchall Sat 16 June 2012, 09:41
Replies: 308
Views: 302,912
Posted By Richards
I had to travel about 100 miles to fix a problem...

I had to travel about 100 miles to fix a problem at one of my computer customer's installations, so I had time to think a little more about "chatter" and about full-step vs micro-stepping.

Let's...
Forum: Miscellaneous / General / Whatever / Catchall Sat 16 June 2012, 07:04
Replies: 308
Views: 302,912
Posted By Richards
I've been playing with a spreadsheet to show the...

I've been playing with a spreadsheet to show the number of steps that a MechMate would move as a circle is being cut. The PDF shows the first few lines of that spreadsheet when a 5" circle is being...
Forum: Miscellaneous / General / Whatever / Catchall Fri 15 June 2012, 14:30
Replies: 308
Views: 302,912
Posted By Richards
The best way to check a motor for good linearity...

The best way to check a motor for good linearity is to listen to it run as its speed is slowly increased. The smoother the sound, the better the linearity.

I was lucky. I had a bunch of...
Forum: Miscellaneous / General / Whatever / Catchall Fri 15 June 2012, 06:41
Replies: 308
Views: 302,912
Posted By Richards
Gerald, You've made a good suggestion. ...

Gerald,

You've made a good suggestion.

I have several "b" type motors (1/2" shaft extending out the back), but I don't have any 1/2" encoders. If I can find a good 1/2" encoder, I could hack...
Forum: Miscellaneous / General / Whatever / Catchall Wed 13 June 2012, 18:46
Replies: 308
Views: 302,912
Posted By Richards
Kim, You may have given us the main reason...

Kim,

You may have given us the main reason that we get excessive "chatter" when cutting curves.

All stepper motors have an area on their "speed curve" where they resonate. When I design...
Forum: Miscellaneous / General / Whatever / Catchall Tue 12 June 2012, 07:36
Replies: 308
Views: 302,912
Posted By Richards
Please post some photos of your cut quality,...

Please post some photos of your cut quality, especially curves to show chatter or lack of chatter.
Forum: Miscellaneous / General / Whatever / Catchall Sat 06 November 2010, 22:08
Replies: 308
Views: 302,912
Posted By Richards
Gerald, I believe that my post was called...

Gerald,

I believe that my post was called for and that it was accurate. You bought a very inferior Shopbot PR. You modified and removed as many of the Shopbot's weak features as you could and...
Forum: Miscellaneous / General / Whatever / Catchall Sat 06 November 2010, 15:40
Replies: 308
Views: 302,912
Posted By Richards
If there is only one design in this entire world...

If there is only one design in this entire world that is acceptable, then perhaps we should all find another forum.

Synergy comes from a group of interested people helping each other refine ideas....
Showing results 1 to 14 of 14

 
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