>
> Given this is a hobby machine, the 5TPI while sexy could lead to this
> type of thing. I use 10TPI on a 2'X4' work surface and can get 120IPM but
> stick to 90ipm due to slop in my machine. If your carving out templates
> from large sheets of 1/4" MDF or the like, then 5tpi is the way to go,
Hi Brian,
> As Dave noted, you are approaching the point on the spiral where the
> movement on a given axis is at a minimum. With the full step and a
> low
> thread count, you might be encountering a detent on the motor perhaps?
Bingo, I think that nailed it. I was running 5 tpi lead screws at
What is your threading TPI on the lead screws. In addition, have you tried
different stepping rates (1/2 or 1/4)?
I have the HCNC Pro Rev 1 board (basically the same as yours + Idle Current
Control).
I currently use 1/2 stepping with 10tpi acme threads and have not noticed
any similar issue.
As
steppers do go quiet on spiral as there is little to do in places
Dave Caroline
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Les wrote:
> Are you using backlash compensation? If so, what is your backlash
> compensation speed?
>
> Les
>
No, no backlash compensation (at last not that I know of - I guess
it's possible that stepconf snuck something in though). My lead screw
nuts are of the anti-backlash variety, so I am
Are you using backlash compensation? If so, what is your backlash
compensation speed?
Les
Jeffrey Pease wrote:
> Hi EMC,
>
> I'm tuning my machine, and I am having some weird problems with the
> EMC spiral example. This issue is entirely repeatable, and seems to
> happen without fail regard
> Jeffrey Pease wrote:
>> I have no explanation for why this glitch is occurring in these
spots,
>> and no real idea how to fix it. Any ideas?
>>
>> My machine is using steppers and lead screws. Running EMC2 on Ubuntu
>> 8.04.
Sebastian Kuzminsky wrote:
>
Jeffrey Pease wrote:
> I have no explanation for why this glitch is occurring in these spots,
> and no real idea how to fix it. Any ideas?
>
> My machine is using steppers and lead screws. Running EMC2 on Ubuntu
> 8.04.
Which version of emc2?
What hardware is driving your steppers?
What con
Hi EMC,
I'm tuning my machine, and I am having some weird problems with the
EMC spiral example. This issue is entirely repeatable, and seems to
happen without fail regardless of any feed rate, acceleration or speed
settings that I have tried.
What happens is on a particular place in every a
