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I'm starting to realise now how irrelevant my initial question was. I'm actually at a stage where I can start making stuff. Still just on my L plates but I reckon I can improve the finish and...

Yeh, there was a ton of movement in that direction (tilting of the gantry) so I didn't bother to check the sideways (x axis) deflection.

Yes, and knowing where the flex is coming from is the key. Seeing that bit of slowmo helps

Some more video. This has also been a learning experience for me :)


https://www.youtube.com/watch?v=vGdVeWglE6c

Yeh, i know. This forum doesn't rate hobbyist... or is it hobby machines... or is it both :D

I did some work on rigidity. It's better though i reckon i can still tweak it just a little more. ...

I'll try remember those rules of thumb... and nominal chip load (Fz) I didn't know what that meant or that there was a recommended by the tool maker.

The chip load you mention seems very high. ...

Doh! Good question. I didn't pay attention on the first run (maybe 2) but after that I went the Max available for this spindle which is 12k

This weekend i got to run this little cnc again after some modifications. Sorry i'm not in the league of the vast majority of this forum (i'm a new to the industry and a hobbyist at that).

This...

This got me wondering, is there a rough cut off point that steppers are more suitable than servos e.g. size / rigidity if a machine or is it more aligned with what material is being cut e.g. wood vs...

Lol, I'm going to try remember that unit of measurement and use it :cool:

The "tensor and Eigen" speak is a little above my pay grade but everything else you said is very helpful. I do have a...

Peteeng (Pete the engineer..?) How does one test rigidity? If that is the factor that determines what motors/electronics then there must be a way of gauging how stiff = what motors...?

Thanks for all that explanation Craig.

I think I'll use this machine as is for a little longer and see how I feel about it after a few months. I don't really want to spend money on it now only to...

Yeh I can understand when trying to make money then speed is key. I'm definitely a hobbyist. Not looking to make/ build a machine but wondering how suitable the stock steppers are on my recent (few...

I think I'm missing something here so forgive me for sounding ignorant but why would I want super fast rapid speeds that will only scare me...??

I feel like I have a better understanding of the differences between stepper and servo now.

I know I'm new to this but the feed rates you mention seem awfully high...?? Is that for milling wood?...

Aah yes I've read the closed loop servo is the shiznit. I was thinking their biggest benefit is at high speed which I didn't think was too important to me since I'm learning. Acceleration seems to...

Lol, you're right I am surprised by that. That seems like the most likely point when steps get missed.

Do closed loop steppers help with missed steps or do they just do catch up after the fact?

Thanks Craig. I wasn't even thinking about acceleration, thanks for the tip. That's just another variable when trying to work out torque needed for the stepper. I need to refer to the stepper...

I've got this feeds and speeds app on my phone, it gives all kinds of data. It gives a calculation on "cutting force". If the direction of cut lined up with the an axis / ball screw then that...

Each time one of you guys post a reply I'm either learning something or finding a new aspect i need to look into. It helps me clarify what it is i'm wanting. I appreciate it a lot, thanks :)
...

That's handy info and not something that's easy to find out, thanks.

I'll make this list of priorities for my own clarity if nothing else.

Priorities for buying a motion controller for the...

Lol, I just recently watched both of those videos. All part of the quest and drowning in info :drowning: The stepcraft video was a lttle more interesting because it showed a little of the software...

Doh! Are you trying to make it harder for me to decide :p

Gary did down play uccnc but he also gave props to Wincnc. Obviously I don't know of any affiliations between members and companies. ...

I think I've narrowed it down to centroid. Uccnc probably has more flexibility but I think centroid is more suited to me as a beginner. I've been trying to read lots the last few days. Here's some...

Thanks Gerry. From what I could gather masso has only a very small fanbase because it didn't perform to most people's expectation.

One thing I did find that was educational though -



I...

forum.cncdrive.com • View topic - Put my name on the list for lathe users

It looks like uccnc can do what I want but doesn't have lathe mode / screenshot so it might not be as intuitive as...

That's good news. Thanks OlfCNC. I'm warming to uccnc. It also has 6 asxis control so one day I could add something like a tool turret.

I was snooping around the centroid forum and found this quote by cnckeith

"right now, 0-10 vdc and 0-5 vdc analog out is the only way to control a spindle motor with Acorn.[/FONT]
we are adding...

Hello

I've got this machine I want to build but silly me, i'm a complete beginner :rolleyes: Please be kind.

I'd like to setup a 4th axis on an encoded servo to be used as both a lathe and...

Thanks for the suggestion. I guess an electric window motor will have low revs for the task too. Sounds easy enough. I'll try find some others who have done this on YouTube.