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Hi,

I'm seriously considering purchasing and Avid Pro 4x2 frame (and probably motors) as the basis for a build. I can do the electronics and SW and build a table suitable for mounting a dust...

I use Fusion360, so no problem with CAM.

And I don't think the "canned cycles" are all that important to me, so no problem there either.

I will try to find the bugs list for candidate...

This is all useful feedback. I kinda already stated my reasons for considering GRBL, but can add a few things.

First, I used Mach3 before and it left a lot to be desired. I had to use an ethernet...

Have you written any macros for probing? That's the area I would probably want to work on. And is there a way to present a simple dialog box to gather input for a macro?

I'm quickly realizing the...

Hello. I'm considering a machine upgrade that would involve moving from UCCNC and a custom screenset (cncwoodworker.com) to a GRBL based system. I'd like to get off Windows, and I like the idea of...

That was a hugely useful reply in terms of understanding the rotational inertia of the ball screws. I hadn't thought of that. That's an argument for belt drive, though I've found on my existing...

The explanation makes sense. It does imply that the AC input voltage specified is RMS, not peak to peak, otherwise you wouldn't get the voltage boost in AC mode. Is that usually how AC power supplies...

Didn't it say AC or DC?

So coming back down to "high end hobbyist machine" for cutting wood, including maple (bass and guitar building), what do you all think of this, which got a favorable mention on this thread?
...

This is all excellent info and I appreciate the detail. Could I ask for a little input in the spirit of the OP? For someone building a DIY "hobbyist" machine, is there a 2020 update on budget drivers...

It seems to me that no one answered the OP question. WHY are the better drivers better? The closest thing I saw was:

Features like stall detection, anti resonance, full step morphing, and many...

That's a good point that I thought about briefly and then forgot about. One thing I do know is that at this point my belt is above the recommended tension. That helps a lot, as the modulus of...

Yes I have steppers. I'm told here on the forum that as long as I have low inductance motors (I do), good drivers (GeckoDrive 450, so ??), and high voltage power supply (probably need to upgrade),...

Thanks! I had found that after I posted, and determined that running a 1610 ball screw over about 50" would be no problem with double bearing mounts at one end and single bearing at the other end....

It surprised me too. But a couple days into examining design specifications for belts, I concluded that my eyes were not deceiving me. Remember that the amount of belt stretch is proportional to the...

Everything you say makes sense, Sir Routalot. I just need to get to "good enough". The stuff I've learned on cnczone in the last two weeks, along with concomitant internet research, leaves me so much...

This is great. I love learning new stuff. FWIW, the whip calculator says I could run the 16xx at 1033 rpm, so if the motor could run 1000 rpm, that would give me 400 ipm which is more than enough for...

I finally found an easy to use whip calculator and it seems to indicate a 1605 would be fine at 100 ipm with double bearing at one end and single bearing at the other. BUT since the travel per...

I'd like to work through the whip calculation posted above, but have a couple questions. First, how will I know the density? And what is "E"?

I already did that. The belt stretch is so dominant, it is difficult to tell what else is going on. That's true in the X direction as well (gantry moving along the rails).

The rails are 2 inch square steel rails. There is an idler on all four sides of the rail. I can't detect any play in the sliders, though it will be easier once the belt flex issue is solved. I can't...

Good feedback on the used route. Not what I want to hear but thanks.

So many people here want to rediagnose a problem I spent several days diagnosing. I ran my diagnosis by an expert CNC friend who was also dubious and suspected the gantry side plates. So did I, it's...

Now we are getting somewhere. The last two posts are very useful. Thank you both. Getting a used machine that needs work is an interesting idea. I wonder how I would shop in my area. I'd almost...

I'm not making much progress figuring the whirl thing out. It has to do with the resonant frequency, and to know that, I need to know the mass of the screw and probably also the stiffness, neither of...

My machine has two belts on the long axis (X axis). The problem I've noticed so far is flex along the other axis - the carriage moving across the gantry (Y axis). It's possible that I also have a...

Hey Gerry,

I know you. I have your 2017 screenset for UCCNC, it's great! Don't know what I would do without it.

But isn't your answer sort of obvious? Of course every machine is different. And...

Thanks for all your help. I'll try to digest what I've learned here.

Those ball screws seem pretty affordable, and design of the router is easier too. Do I need to worry about dust seals with such an affordable ball screw? Do I need worry about the ball screw whipping...

I'll be cutting a lot of hard maple, building bass guitar necks and bodies. I would love to experiment with lightweight brass or aluminum cutting, for making parts for bridges or headless tuning...